Correction: The Effect of Divided Attention with Bounce Drop Jump on Dynamic Postural Stability
Int J Sports Med DOI: 10.1055/a-1205-6731 © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - July 2, 2020 Category: Sports Medicine Authors: Lin, Jian-Zhi Tai, Wei-Hsun Chiu, Lan-Yi Lin, Yu-An Lee, Heng-Ju Tags: Erratum Source Type: research

The Effects of Performing Mental Exertion during Cycling Exercise on Fatigue Indices
This study investigated the effect of performing prolonged mental exertion during submaximal cycling exercise on exercise tolerance and fatigue. Participants performed 5 experimental sessions. Session 1: determination of cycling peak power output. Sessions 2 and 3: cycling to exhaustion at 65% peak power output with mental exertion or watching a movie. Sessions 4 and 5: cycling for 45 min at 65% peak power output with mental exertion or while watching a movie. During sessions 2–5, rate of perceived exertion and heart rate were recorded while cycling and cortisol and prolactin concen...
Source: International Journal of Sports Medicine - June 29, 2020 Category: Sports Medicine Authors: Barzegarpoor, Hamidreza Amoozi, Hamid Rajabi, Hamid Button, Duane Fayazmilani, Rana Tags: Training & Testing Source Type: research

Meta-Analysis: Resistance Training Improves Cognition in Mild Cognitive Impairment
This study investigated the benefits of resistance training on cognition in patients with mild cognitive impairment. We searched the PubMed, Embase and Cochrane Library databases, and seven randomized controlled trials were reviewed. We evaluated the risk of bias using the Cochrane Collaboration’s bias assessment tool. Standard mean differences with 95% confidence intervals were calculated for statistical analysis. This meta-analysis assessed three variables: general cognitive function, executive function and working memory. The results indicate that general cognitive function ...
Source: International Journal of Sports Medicine - June 29, 2020 Category: Sports Medicine Authors: Zhang, Lulu Li, Bin Yang, Jingjing Wang, Fengling Tang, Qianyun Wang, Shuhong Tags: Review Source Type: research

Acute Hemodynamic Responses to Combined Exercise and Sauna
This study investigated acute hemodynamic, plasma volume and immunological responses to four loading protocols: sauna only, and sauna after endurance, strength or combined endurance and strength exercise. Twenty-seven healthy, slightly prehypertensive men (age 32.7±6.9 years) were measured at PRE, MID (after exercise), POST, POST30min and POST24h. The measurements consisted systolic and diastolic blood pressure, heart rate, body temperature and concentrations of high-sensitive C-reactive protein, white blood cells and plasma volume measurements. Endurance+sauna showed significant d...
Source: International Journal of Sports Medicine - June 29, 2020 Category: Sports Medicine Authors: Rissanen, Joonas Antero H äkkinen, Keijo Laukkanen, Jari Antero H äkkinen, Arja Tags: Physiology & Biochemistry Source Type: research

Concurrent Exercise Interventions in Breast Cancer Survivors with Cancer-related Fatigue
This study compared the effects of two supervised concurrent training interventions in breast cancer survivors with cancer-related fatigue at baseline. Twenty-three female breast cancer survivors (50±8 years) were randomized to a high- (n=13) or a moderate-intensity (n=10) training program. Both interventions lasted 16 weeks and included the same resistance exercises, but the aerobic component was supervised and more intense in the former (i.e., rating of perceived exertion of 7–8 vs. 6 on a 1–10 scale for the high and moderate-intensity intervention, respectively)...
Source: International Journal of Sports Medicine - June 29, 2020 Category: Sports Medicine Authors: Pagola, Itiziar Morales, Javier S. Alejo, Lidia B. Barcelo, Olga Montil, Marta Oliv án, Jesús Álvarez-Bustos, Alejandro Cantos, Blanca Maximiano, Constanza Hidalgo, Francisco Valenzuela, Pedro L. Fiuza-Luces, Carmen Lucia, Alejandro Ruiz-Casado, Ana Tags: Clinical Sciences Source Type: research

Intense Cycling Exercise Improves Acute Cognitive Responses
In this study we investigate the acute effect of cycling at intensities corresponding to 60%, 80% and 95% of the maximal power output (MP) on selective attention, reaction time and short-term memory in amateur trained cyclists. In this cross sectional study 20 male cyclists performed maximal and submaximal cycling tests under different exercise intensities. Cognitive measures were conducted before and after exercise. We found that short duration high intensity cycling (95%) improves selective attention but increases variability in simple reaction time responses, without significant e...
Source: International Journal of Sports Medicine - June 29, 2020 Category: Sports Medicine Authors: Kunzler, Marcos Roberto Carpes, Felipe P. Tags: Behavioural Sciences Source Type: research

Effects of Wearing a Jaw-repositioning Intra-oral Device in Synchronized Swimming Athletes
Int J Sports Med DOI: 10.1055/a-1179-5806The effects of wearing an intra-oral device on several ventilatory and fatigue markers have been reported for a variety of sports. The quality of the figures performed in synchronized swimming is directly affected by fatigue, and can be monitored during training sessions (TS). The aim of the study was to investigate the acute effects of wearing customized intra-oral devices on heart rate variability, rating of perceived exertion, blood lactate accumulation, and salivary cortisol production during a competitive training session. Twelve highly traine...
Source: International Journal of Sports Medicine - June 26, 2020 Category: Sports Medicine Authors: Solana-Tramunt, Monica Busc à, Bernat Morales, Jose Mir ó, Adrià Aguilera-Castells, Joan Arboix-Ali ó, Jordi Tags: Training & Testing Source Type: research

Monitoring Matches and Small-sided Games in Elite Young Soccer Players
Int J Sports Med DOI: 10.1055/a-1165-1916The aim of this study was to compare the distances at various intensity in matches and small-sided games in elite-young soccer players using the metabolic power approach and running speed methods through fixed and individual speed zones. The second aim was to investigate the difference in high intensity external workload (% of total distances covered > 16 km/h or > 20 W/kg) between matches and small-sided games. Global positioning system data from 14 elite-youth players were analyzed during 13 matches and two ...
Source: International Journal of Sports Medicine - June 26, 2020 Category: Sports Medicine Authors: Darbellay, Jonas Malatesta, Davide Meylan, C ésar Marius Philippe Tags: Training & Testing Source Type: research

Is Pre-operative Quadriceps Strength a Predictive Factor for the Outcomes of Anterior Cruciate Ligament Reconstructions
Int J Sports Med DOI: 10.1055/a-1144-3111Persistent quadriceps weakness prevents patients from returning to sports after ACL reconstruction. Pre-operative quadriceps strength was indicated as an important factor for the outcomes of ACL reconstruction. However, the existing evidence is controversial. Therefore, this systematic review was conducted to summarize and evaluate the relationship between pre-operative quadriceps strength and the outcomes following ACL reconstruction, and to summarize the predictive value of pre-operative quadriceps strength for satisfactory post-operative outcome...
Source: International Journal of Sports Medicine - June 26, 2020 Category: Sports Medicine Authors: Qiu, Jihong He, Xin Fu, Sai-Chuen Ong, Michael Tim-Yun Teng Leong, Hio Shu-Hang Yung, Patrick Tags: Review Source Type: research

Epidemiology of Injuries in Elite Female Futsal Players: A Prospective Cohort Study
Int J Sports Med DOI: 10.1055/a-1179-6280Injuries are one of the worst case scenarios for an athlete and a team. The aim of this study was to analyze the injury incidence, characteristics and burden among a cohort of elite female futsal players. A prospective cohort study was designed over a season. Eighty-nine players from seven elite female futsal teams were monitored during the whole season. Eight different variables were recorded when an injury happened, as well as exposure time. A total of 90 injuries were recorded so that 54 out of 89 players (60.6%) sustained an injury. The overall...
Source: International Journal of Sports Medicine - June 26, 2020 Category: Sports Medicine Authors: Lago-Fuentes, Carlos Jim énez-Loaisa, Alejandro Padr ón-Cabo, Alexis Calvo, Marcos Mec ías Garc ía-Pinillos, Felipe Rey, Ezequiel Tags: Orthopedics & Biomechanics Source Type: research

Correction: The Effects of Agility Ladders on Performance: A Systematic Review
Int J Sports Med DOI: 10.1055/a-1187-7560 © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - June 23, 2020 Category: Sports Medicine Authors: Afonso, Jos é da Costa, Israel Teoldo Cam ões, Miguel Silva, Ana Lima, Ricardo Franco Milheiro, Andr é Martins, Alexandre Laporta, Lorenzo Nakamura, F ábio Yuzo Clemente, Filipe Manuel Tags: Erratum Source Type: research

Hemodynamic and Pressor Responses to Combination of Yoga and Blood Flow Restriction
Int J Sports Med DOI: 10.1055/a-1171-1620A combination of yoga and blood flow restriction, each of which elicits marked pressor responses, may further increase blood pressure and myocardial oxygen demand. To determine the impact of a combination of yoga and blood flow restriction on hemodynamic responses, twenty young healthy participants performed 20 yoga poses with/without blood flow restriction bands placed on both legs. At baseline, there were no significant differences in any of the variables between the blood flow restriction and non-blood flow restriction conditions. Blood pressure...
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: Wooten, Savannah V. Stray-Gundersen, Sten Tanaka, Hirofumi Tags: Training & Testing Source Type: research

Side Differences Regarding the Limb Symmetry Index in Healthy Professional Athletes
Int J Sports Med DOI: 10.1055/a-1171-2548Side differences in the limb symmetry index during hop tests have been rarely investigated in uninjured athletes. Unknown differences can result in false interpretation of hop tests and affect return to sport decision. Hypothesis was that un-injured athletes in Judo and Taekwondo have side differences in hop test and that asymmetries can be predicted based on the athletes fighting display. Differences, risk relationships were analyzed using the chi-squared test and the odds ratio. A two-tailed p value of90. Moreover, 57.4% (n=66) reached longer jum...
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: Lambert, Christophe Pfeiffer, Thomas Lambert, Maxime Brozat, Benedikt Lachmann, Daniel Shafizadeh, Sven Akoto, Ralph Tags: Training & Testing Source Type: research

Curve Sprinting in Soccer: Kinematic and Neuromuscular Analysis
Int J Sports Med DOI: 10.1055/a-1144-3175Sprinting in curvilinear trajectories is an important soccer ability, corresponding to ~85% of the actions performed at maximum velocity in a soccer league. We compared the neuromuscular behavior and foot contact-time between outside leg and inside leg during curve sprinting to both sides in soccer players. Nine soccer players (age=23±4.12 years) performed: 3×Sprint linear, 3×Sprint right curve, and 3×Sprint left curve. An ANOVA with repeated measures was used to compare the differences between inside and outside leg, and C...
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: Filter, Alberto Olivares-Jabalera, Jes ús Santalla, Alfredo Morente-S ánchez, Jaime Robles-Rodr íguez, Jose Requena, Bernardo Loturco, Irineu Tags: Training & Testing Source Type: research

Normative Rugby Data of the SARTS Tests: Comparison of Elite and School Players
This study aimed to examine the normative data for the SARTS rugby tests in elite and schoolboy rugby players. A second aim was to examine differences between level of sport and position of play in the SARTS rugby tests. Elite (N = 57) and Schoolboy (N = 63) rugby players performed the SARTS tests relevant to rugby players each for 1 min, with 1–2 min rest between each test. A 2×2 factorial ANOVA was used to assess for the main effect of player position and player level of play. Results showed that elite players performed more Ball Abduction External Rotation (BA...
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: Olds, Margie Gadkari, Pradnya Adams, Thomas Tags: Orthopedics & Biomechanics Source Type: research

Correction: Anaerobic and Agility Parameters of Salonists in Laboratory and Field Tests
Int J Sports Med DOI: 10.1055/a-1185-7374 © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: da Cruz, Jo ão Pedro Messias, Leonardo Henrique Dalcheco Cetein, Rafael Lucas Rasteiro, Felipe Marroni Gobatto, Claudio Alexandre Manchado-Gobatto, F úlvia Barros Tags: Erratum Source Type: research

Symptom Presentation After Concussion and Pre-existing Anxiety Among Youth Athletes
Int J Sports Med DOI: 10.1055/a-1107-3025Our purpose was to evaluate the effect of self-reported pre-injury anxiety diagnosis on persistent symptom development, vestibular symptom severity, and balance control among youth who sustained a concussion. We performed a retrospective study of patients seen at a specialty pediatric concussion clinic. Patients were 18 years of age or younger, examined within 10 days of concussion, and received care until full recovery. A questionnaire was used to assess pre-existing medical and psychiatric conditions, including anxiety. Our main outcomes were pro...
Source: International Journal of Sports Medicine - June 3, 2020 Category: Sports Medicine Authors: Kent, Matthew Brilliant, Anna Erickson, Kirk Meehan, William Howell, David Tags: Clinical Sciences Source Type: research

Increase in the Acute:Chronic Workload Ratio relates to Injury Risk in Competitive Runners
This study used the workload derivatives acute workload, chronic workload, and acute: chronic workload ratios to investigate the relation between workload and injury risk in running. Twenty-three competitive runners kept a daily training log for 24 months. The runners reported training duration, training intensity and injuries. One-week (acute) and 4-week (chronic) workloads were calculated as the average of training duration multiplied by training intensity. The acute:chronic workload ratio was determined dividing the acute and chronic workloads. Results show that a fortnightly low ...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Dijkhuis, Talko Bernhard Otter, Ruby Aiello, Marco Velthuijsen, Hugo Lemmink, Koen Tags: Training & Testing Source Type: research

Whole-body Electromyostimulation plus Caloric Restriction in Metabolic Syndrome
Int J Sports Med DOI: 10.1055/a-1171-2003We investigated early effects of Whole-Body Electromyostimulation added to hypocaloric diet on metabolic syndrome features in sedentary middle-aged individuals. We randomly assigned 25 patients to Whole-Body Electromyostimulation plus caloric restriction or caloric restriction alone for 26 weeks. Anthropometrics, blood pressure, fasting glucose and insulin, HOMA-IR, glycated hemoglobin, lipids, uric acid, creatinphosphokynase, C-reactive protein were assessed. Body composition was evaluated with direct-segmental, multi-frequency Bioelectrical Imped...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Bellia, Alfonso Ruscello, Bruno Bolognino, Rolando Briotti, Gianluca Gabrielli, Paolo Roberto Silvestri, Adriano Rosazza, Cristina Ambruoso, Francesca Lombardo, Mauro Bernardini, Andrea Calabrese, Cosimo Lauro, Davide D ’Ottavio, Stefano Tags: Training & Testing Source Type: research

Squat Muscle Activation Patterns with Hip Rotations in Subjects with Genu Varum Deformity
Int J Sports Med DOI: 10.1055/a-1152-5028The purpose of this study was to compare muscle activation during the squat with different hip rotations (neutral, 15, 30, and 45° of internal and external hip rotation) in subjects with and without Genu Varum deformity deformity. Surface electromyography were recorded from 32 men with (n=16) and without (n=16) Genu Varum deformity. In the Genu Varum deformity group, the squats with 30, 45 and 15° of internal rotations of the hip showed significantly greater gluteus medius activation as compared to other positions. Moreover, the tensor fascia lata activity increased with gre...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Hatefi, Mohamadreza Babakhani, Farideh Balouchi, Ramin Letafatkar, Amir Wallace, Brian J. Tags: Orthopedics & Biomechanics Source Type: research

Prevalence of Risk of Eating Disorders and its Association with Obesity and Fitness
Int J Sports Med DOI: 10.1055/a-1152-5064The university stage is a critical developmental period for young adults, where lifestyles can determine future health. A cross-sectional study including 481 college students was conducted, with the following objectives: 1) to examine the prevalence of risk of developing eating disorders in college students, 2) to assess differences in obesity and physical fitness in those with and without risk of eating disorders, and 3) to determine whether cardiorespiratory fitness, muscular fitness or fat mass were associated with the risk of eating disorders. ...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Parre ño-Madrigal, Isabel María D íez-Fernández, Ana Mart ínez-Vizcaíno, Vicente Visier-Alfonso, Mar ía Eugenia Garrido-Miguel, Miriam S ánchez-López, Mairena Tags: Training & Testing Source Type: research

The Effect of Divided Attention with Bounce Drop Jump on Dynamic Postural Stability
This study determined the effect of divided attention on controlling postural stability during a drop vertical jump task. In total, 30 participants were tested for drop vertical jumps from a 30-cm high platform and landing on a single leg with or without divided attention tasks. Three-dimensional marker trajectories and ground reaction forces were collected simultaneously. Vertical ground reaction force, loading rate, and dynamic postural stability index were analyzed with or without divided attention tasks. The paired sample t test indicated a significantly low knee flexion angle, high v...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Lin, Jian-Zhi Tai, Wei-Hsun Chiu, Lan-Yi Lin, Yu-An Lee, Heng-Ju Tags: Orthopedics & Biomechanics Source Type: research

Motor Deficits in Youth with Concussion History: Issues with Task Novelty or Task Demand?
Int J Sports Med DOI: 10.1055/a-1144-3217The present study expands previous work on eye-hand decoupling deficits in youth with concussion history. It examines whether deficits can be linked to difficulties adapting to new task constraints or meeting ongoing task demands. Data from 59 youth with concussion history (M=11 months post-concussion) and 55 no history controls were analyzed. All 114 participants (M=12.5 yrs.) performed two touchscreen-based eye-hand coordination tasks: A standard task with vision and motor action in alignment, and an eye-hand decoupling task with both spatially d...
Source: International Journal of Sports Medicine - June 2, 2020 Category: Sports Medicine Authors: Dalecki, Marc Usand, Jessica Van Gemmert, Arend W. A. Sergio, Lauren E. Tags: Behavioural Sciences Source Type: research

Returning to Play after Prolonged Training Restrictions in Professional Collision Sports
Int J Sports Med DOI: 10.1055/a-1180-3692The COVID-19 pandemic in 2020 has resulted in widespread training disruption in many sports. Some athletes have access to facilities and equipment, while others have limited or no access, severely limiting their training practices. A primary concern is that the maintenance of key physical qualities (e. g. strength, power, high-speed running ability, acceleration, deceleration and change of direction), game-specific contact skills (e. g. tackling) and decision-making ability, are challenged, impacting performance and injury risk...
Source: International Journal of Sports Medicine - May 29, 2020 Category: Sports Medicine Authors: Stokes, Keith A. Jones, Ben Bennett, Mark Close, Graeme L. Gill, Nicholas Hull, James H. Kasper, Andreas M. Kemp, Simon P.T. Mellalieu, Stephen D. Peirce, Nicholas Stewart, Bob Wall, Benjamin T. West, Stephen W. Cross, Matthew Tags: Review Source Type: research

A Clinical Method for Estimation of VO2max Using Seismocardiography
Int J Sports Med DOI: 10.1055/a-1144-3369The purpose of this study was to investigate the correlation between the seismocardiogram and cardiorespiratory fitness. Cardiorespiratory fitness can be estimated as VO2max using non-exercise algorithms, but the results can be inaccurate. Healthy subjects were recruited for this study. Seismocardiogram and electrocardiogram were recorded at rest. VO2max was measured during a maximal effort cycle ergometer test. Amplitudes and timing intervals were extracted from the seismocardiogram and used in combination with demographic data in a non-exercise prediction model for VO2max. 26 subj...
Source: International Journal of Sports Medicine - May 26, 2020 Category: Sports Medicine Authors: S ørensen, Kasper Poulsen, Mathias Krogh Karbing, Dan Stieper S øgaard, Peter Struijk, Johannes Jan Schmidt, Samuel Emil Tags: Training & Testing Source Type: research

Workload Monitoring in Top-level Soccer Players During Congested Fixture Periods
This study assessed the internal and external workload of starters and non-starters in a professional top-level soccer team during a congested fixture period. Twenty Serie A soccer players were monitored in this study during two mesocycles of 21 days each. Starters and non-starters were divided based on the match time played in each mesocycle. The following metrics were recorded: exposure time, total distance, relative total distance, high-speed running distance over 20 km·h−1, very high-speed running distance over 25 km·h−1, individual very high-speed distance over 80% of maximum pe...
Source: International Journal of Sports Medicine - May 26, 2020 Category: Sports Medicine Authors: Gualtieri, Antonio Rampinini, Ermanno Sassi, Roberto Beato, Marco Tags: Training & Testing Source Type: research

Attributes of Physical Activity and Gut Microbiome in Adults: A Systematic Review
In conclusion, physical activity (regardless of specific characteristics) has significant contribution to gut microbiome composition and associated metabolites. There are no current recommendations for physical activity to promote gut microbiome composition. Future studies should focus on the contribution of current recommended physical activity dose to gut microbiome composition. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - May 26, 2020 Category: Sports Medicine Authors: Tzemah Shahar, Roy Koren, Omry Matarasso, Sarah Shochat, Tamar Magzal, Faiga Agmon, Maayan Tags: Review Source Type: research

Quantitative Redox Biology of Exercise
Int J Sports Med DOI: 10.1055/a-1157-9043Biology is rich in claims that reactive oxygen and nitrogen species are involved in every biological process and disease. However, many quantitative aspects of redox biology remain elusive. The important quantitative parameters you need to address the feasibility of redox reactions in vivo are: rate of formation and consumption of a reactive oxygen and nitrogen species, half-life, diffusibility and membrane permeability. In the first part, we explain the basic chemical kinetics concepts and algebraic equations required to perform “street fighting” quantitative analysis. ...
Source: International Journal of Sports Medicine - May 26, 2020 Category: Sports Medicine Authors: Nikolaidis, Michalis G. Margaritelis, Nikos V. Matsakas, Antonios Tags: Review Source Type: research

Role of Basal Hormones on Sweat Rate and Sweat Na+   Loss in Elite Women Soccer Players
In conclusion, these results suggest that in these specific environmental conditions, basal levels of testosterone might increase sweat rate and therefore, the amount of Na+ lost during exercise in elite women soccer players. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - May 26, 2020 Category: Sports Medicine Authors: Castro-Sepulveda, Mauricio Cancino, Jorge Jannas-Vela, Sebastian Jesam, Francisca Lobos, Casandra Del Coso, Juan Zbinden-Foncea, Hermann Tags: Physiology & Biochemistry Source Type: research

Functional Knee Performance Differences in Handball are Depending on Playing Class
This study illustrates the relevance of playing class specific screening. Sports and playing class-specific databases will help to identify individual deficits and strengths in order to prevent injury and increase performance. Moreover, objective criteria for return to sports can be established. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - May 25, 2020 Category: Sports Medicine Authors: R ühlemann, Alina Mayer, Constantin Haversath, Marcel J äger, Marcus Tags: Training & Testing Source Type: research

The Effects of Agility Ladders on Performance: A Systematic Review
Int J Sports Med DOI: 10.1055/a-1157-9078The goal of this systematic review was to evaluate the effects of exercise programs using agility ladders and to assess the quality of available evidence. Search was conducted in October of 2019 using the following databases: Cochrane Library, PEDro, PubMed, Scopus and Web of Science. Study eligibility criteria included randomized trials or randomized controlled trials using agility ladders drills. Participants were healthy humans of any health status. The study appraisal and synthesis methods followed the revised Cochrane risk-of-bias tool for randomized trials (RoB 2) ...
Source: International Journal of Sports Medicine - May 12, 2020 Category: Sports Medicine Authors: Afonso, Jos é da Costa, Israel Teoldo Cam ões, Miguel Silva, Ana Lima, Ricardo Franco Milheiro, Andr é Martins, Alexandre Laporta, Lorenzo Nakamura, F ábio Yuzo Clemente, Filipe Manuel Tags: Review Source Type: research

Anaerobic and Agility Parameters of Salonists in Laboratory and Field Tests
This study aimed to investigate the relationship between mechanical parameters from the Running-based Anaerobic Sprint Test (RAST2×17.5), agility performance from the Illinois Agility Test (IAT) and all-out 30-second tethered running (AO30) in college futsal athletes. It also investigates whether these protocols are capable of identifying differences between sexes. Twenty subjects were evaluated. The IAT was applied on a specific course and performance was considered as the total time (T.T). The RAST2×17.5 consisted of six maximum efforts in a shuttle exercise of 2x17.5 m per bout. The AO30 was conducted under ...
Source: International Journal of Sports Medicine - May 12, 2020 Category: Sports Medicine Authors: da Cruz, Jo ão Pedro Messias, Leonardo Henrique Dalcheco Cetein, Rafael Lucas Rasteiro, Felipe Marroni Gobatto, Claudio Alexandre Manchado-Gobatto, F úlvia Barros Tags: Training & Testing Source Type: research

Kinesiotaping Diminishes Delayed Muscle Soreness but does not Improve Muscular Performance
This study aimed at determining the effect of kinesio-taping (KT) on muscle performance and delayed onset muscle soreness (DOMS) after exercise induced muscle damaged. Sixty-six healthy men volunteered to participate (age:18–25 y/o), who performed 200 isokinetic lengthening contractions of the dominant quadriceps. Then subjects were randomized to either control (no treatment), sham (no tape tension), or KT (10% tape tension) groups. Muscle performance was assessed by peak torque and muscular work during maximal isometric and concentric isokinetic contractions. DOMS intensity was assessed using a visual analog ...
Source: International Journal of Sports Medicine - May 12, 2020 Category: Sports Medicine Authors: Camacho, Maria Alejandra Herrera, Esperanza Barela, Jose Angelo Carolina Delgado-Diaz, Diana Tags: Training & Testing Source Type: research

The Effects of Agility Ladders on Performance: A Systematic Review
Int J Sports Med DOI: 10.1055/a-1157-9078The goal of this systematic review was to evaluate the effects of exercise programs using agility ladders and to assess the quality of available evidence. Search was conducted in October of 2019 using the following databases: Cochrane Library, PEDro, PubMed, Scopus and Web of Science. Study eligibility criteria included randomized trials or randomized controlled trials using agility ladders drills. Participants were healthy humans of any health status. The study appraisal and synthesis methods followed the revised Cochrane risk-of-bias tool for randomized trials (RoB 2) and a qualit...
Source: International Journal of Sports Medicine - May 12, 2020 Category: Sports Medicine Authors: Afonso, Jos é da Costa, IsraelTeoldo Cam ões, Miguel Silva, Ana Lima, RicardoFranco Milheiro, Andr é Martins, Alexandre Laporta, Lorenzo Nakamura, F ábioYuzo Clemente, Filipe Manuel Tags: Review Source Type: research

Evolution of Functional Recovery using Hop Test Assessment after ACL Reconstruction
Int J Sports Med DOI: 10.1055/a-1122-8995The purpose of this study was to evaluate improvements in functional performance through the use of the Limb Symmetry Index of Single and Triple Hop tests between 12 and 52 weeks after anterior cruciate ligament reconstruction, and to compare these values with usual time-based and performance-based criteria used during the return to sport continuum. Repeated functional assessments using Single and Triple Hop Tests at 12, 16, 22, 26, 39 and 52 postoperative weeks were evaluated. At each session, the median and interquartile range of Limb Symmetry Index of tests were calculated and co...
Source: International Journal of Sports Medicine - May 12, 2020 Category: Sports Medicine Authors: Rambaud, Alexandre J.M. Rossi, J érémy Neri, Thomas Samozino, Pierre Edouard, Pascal Tags: Orthopedics & Biomechanics Source Type: research

A Systematic Review of Active Video Games on Youth ’s Body Composition and Physical Activity
Int J Sports Med DOI: 10.1055/a-1152-4959In the past decade, active video games (AVGs) have started to find their way into communities, schools, and homes as a possible solution to promote physical activity (PA) and prevent childhood obesity. However, the evidence regarding its effectiveness on body composition and objectively measured PA in youth remains inconclusive. Thus, a systematic review on this topic is needed. This review synthesizes effects of AVGs on body composition and PA in youth. The initial search yielded 260 articles from 10 databases and 18 randomized-controlled trials were included after evaluating again...
Source: International Journal of Sports Medicine - May 6, 2020 Category: Sports Medicine Authors: Gao, Zan Zeng, Nan McDonough, Daniel J. Su, Xiwen Tags: Review Source Type: research

Age-related Changes in Motor Function (I). Mechanical and Neuromuscular Factors
Int J Sports Med DOI: 10.1055/a-1144-3408This two-part narrative review aims to provide an insight into the age-related mechanical and neuromuscular factors contributing to: (1) decreased maximal muscle strength and power; (2) decreased force control; and (3) increased fatigability. Structural and functional changes from the macro-level of the muscle-tendon unit to the micro-level of the single muscle fibre have been reviewed and are described. At the muscle-tendon unit level, muscle volume, thickness and cross-sectional area, as well as pennation angle and fascicle length all decrease as...
Source: International Journal of Sports Medicine - May 4, 2020 Category: Sports Medicine Authors: Wu, Rui Vito, Giuseppe De Delahunt, Eamonn Ditroilo, Massimiliano Tags: Review Source Type: research

Age of First Exposure to Soccer Heading and Sensory Reweighting for Upright Stance
Int J Sports Med DOI: 10.1055/a-1141-3553US Soccer eliminated soccer heading for youth players ages 10 years and younger and limited soccer heading for children ages 11–13 years. Limited empirical evidence associates soccer heading during early adolescence with medium-to-long-term behavioral deficits. The purpose of this study was to compare sensory reweighting for upright stance between college-aged soccer players who began soccer heading ages 10 years and younger (AFE ≤ 10) and those who began soccer heading after age 10 (AFE> 10). Thirty soccer players self-reported age of first exposure (AFE) to soccer head...
Source: International Journal of Sports Medicine - May 4, 2020 Category: Sports Medicine Authors: Caccese, Jaclyn B. Santos, Fernando V. Yamaguchi, Felipe Jeka, John J. Tags: Orthopedics & Biomechanics Source Type: research

Heart Rate Variability in College Football Players throughout Preseason Camp in the Heat
Int J Sports Med DOI: 10.1055/a-1145-3754We aimed to characterize cardiac-autonomic responses to a 13-day preseason camp in the heat among an American college football team. Players were categorized as linemen (n=10) and non-linemen (n=18). RHR, natural logarithm of the root-mean square of successive differences multiplied by twenty (LnRMSSD), and subjective wellbeing (LnWellness) were acquired daily. Effect sizes±90% confidence interval showed that for linemen, LnRMSSD decreased (moderate) on day 2 (71.2±10.4) and increased (moderate) on day 12 (87.1±11.2) relative to day 1 (77.9±11.2) while RH...
Source: International Journal of Sports Medicine - April 30, 2020 Category: Sports Medicine Authors: Flatt, Andrew A. Allen, Jeff Bragg, Amy Keith, Clayton Earley, Ryan Esco, Michael R. Tags: Training & Testing Source Type: research

Regulation of Circulatory Muscle-Specific MicroRNA during 8 km Run
Int J Sports Med DOI: 10.1055/a-1145-3595Acute prolonged endurance running has been shown to alter muscle-specific circulating microRNA (miRNA) levels. Here, eighteen participants completed an 8 km run. We assessed the levels of hsa-miR-1–3p, -133a-3p, -133b, and -206 and their correlation with conventional biomarkers following exercise. Compared to before exercise (Pre), 8 km run significantly increased the lactate level immediately after exercise (0 h). Myoglobin (Mb) level increased at 0 h while creatine kinase (CK) level increased 24 h after exercise (24 h). The levels of...
Source: International Journal of Sports Medicine - April 30, 2020 Category: Sports Medicine Authors: Yin, Xin Cui, Shufang Li, Xin Li, Wei Lu, Qiu ju Jiang, Xiao hong Wang, Hui Chen, Xi Ma, Ji zheng Tags: Physiology & Biochemistry Source Type: research

VO2 Steady State at and Just Above Maximum Lactate Steady State Intensity
This study shows that power output at MLSS workload does not represent an accurate cut for an upper limit of V̇O2SS. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - April 30, 2020 Category: Sports Medicine Authors: Br äuer, Elisabeth K. Smekal, Gerhard Tags: Physiology & Biochemistry Source Type: research

Phase Angle is Determined by Body Composition and Cardiorespiratory Fitness in Adolescents
Int J Sports Med DOI: 10.1055/a-1152-4865The phase angle is used to evaluate nutritional status and is an indicator of cellular health. Cardiorespiratory fitness and body composition are strong indicators of health during adolescence. We aimed to evaluate if body composition and cardiorespiratory fitness have an association with phase angle among adolescents. 203 girls and 220 boys (12.8±1.3 years) were evaluated. Peak height velocity, percentage fat mass, fat-free mass, cardiorespiratory fitness, and phase angle measurements were collected. Linear regression adjusted by peak height velocity was used to verify if pr...
Source: International Journal of Sports Medicine - April 30, 2020 Category: Sports Medicine Authors: Langer, Raquel David de Fatima Guimar ães, Roseane Gon çalves, Ezequiel Moreira Guerra-Junior, Gil de Moraes, Anderson Marques Tags: Nutrition Source Type: research

Physiological Correlates to In-race Paratriathlon Cycling Performance
Int J Sports Med DOI: 10.1055/a-1103-2001The purpose was to determine the physiological correlates to cycling performance within a competitive paratriathlon. Five wheelchair user and ten ambulant paratriathletes undertook laboratory-based testing to determine their: peak rate of oxygen uptake; blood lactate- and ventilatory-derived physiological thresholds; and, their maximal aerobic power. These variables were subsequently expressed in absolute (l∙min −1 or W), relative (ml∙kg−1∙min −1 or W∙kg −1) and scaled relative (or ml...
Source: International Journal of Sports Medicine - April 14, 2020 Category: Sports Medicine Authors: Stephenson, Ben Thomas Shill, Alex Lenton, John Goosey-Tolfrey, Victoria Tags: Training & Testing Source Type: research

Effects of Body Weight vs. Lean Body Mass on Wingate Anaerobic Test Performance in Endurance Athletes
Int J Sports Med DOI: 10.1055/a-1114-6206The aim of this study was to determine the influence of body weight or lean body mass-based load on Wingate Anaerobic Test performance in male and female endurance trained individuals. Thirty-one participants (22 male cyclists and triathletes and 9 female triathletes) completed two randomized Wingate Anaerobic Test (body weight and lean body mass loads) in stationary start. There were no significant differences in power outputs variables between loads in any group. However, when comparing specific groups within the sample (e. g. cycli...
Source: International Journal of Sports Medicine - April 14, 2020 Category: Sports Medicine Authors: Gal án-Rioja, Miguel Ángel Gonz ález-Mohíno, Fernando Sanders, Dajo Mellado, Jes ús Gonz ález-Ravé, José María Tags: Training & Testing Source Type: research

Is Biceps Femoris Aponeurosis Size an Independent Risk Factor for Strain Injury?
This study examined whether professional footballers with previous biceps femoris long head (BFLH) injury in the last 3-years present a smaller proximal aponeurosis (Apo-BFLH) size compared to footballers with no previous injury. We examined the Apo-BFLH and BFLH size using magnetic resonance imaging and tested the knee flexor maximal isometric strength in 80 thighs of 40 footballers. Apo-BFLH size parameters were processed using a semi-automated procedure. Outcomes were compared between thighs with (n=9) vs. without (n=71) previous BFLH injury. No differences were observed between i...
Source: International Journal of Sports Medicine - April 14, 2020 Category: Sports Medicine Authors: Freitas, Sandro R. Abrantes, Filipe Santos, Francisco Mascarenhas, Vasco Oliveira, Ra úl Firmino, Telmo Mendes, Bruno Cerda, Mauricio Vaz, Jo ão R. Tags: Orthopedics & Biomechanics Source Type: research

Correction: Reproducibility of Heart Rate Variability Indices at Post-maximal Exercise
Int J Sports Med DOI: 10.1055/a-1145-8423 © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - April 14, 2020 Category: Sports Medicine Authors: Ara újo, Jaqueline Alves Pe çanha, Tiago Novelli, Fabiula Isoton Mello, C ésar Siqueira Aleixes Moreira-Gon çalves, Daniel Arsa, Gisela Cambri, Lucieli Teresa Tags: Erratum Source Type: research

The Effects of Resistance Exercise Selection on Muscle Size and Strength in Trained Women
Int J Sports Med DOI: 10.1055/a-1121-7736The study compared the effects of resistance training programs composed by multi-joint (MJ), single-joint (SJ) and the combination of multi- and single-joint (MJ+SJ) exercises on muscle strength and hypertrophy in trained women. Thirty participants were divided into groups that performed only MJ exercises, SJ exercises and MJ+SJ exercises for six months. Participants were tested for 1-repetition maximum (RM) and muscle thickness (MT) before and after the intervention. All groups showed significant gains on 1RM tests from pre- to post-training (P
Source: International Journal of Sports Medicine - April 6, 2020 Category: Sports Medicine Authors: Barbalho, Matheus Souza, Daniel Coswig, Victor Steele, James Fisher, James Abrahin, Odilon Paoli, Antonio Gentil, Paulo Tags: Training & Testing Source Type: research

Is Exercise a Match for Cold Exposure? Common Molecular Framework for Adipose Tissue Browning
Int J Sports Med DOI: 10.1055/a-1100-7118Exercise is commonly utilized for weight loss, yet research has focused less on specific modifications to adipose tissue metabolism. White adipose tissue (WAT) is the storage form of fat, whereas brown adipose tissue (BAT) is a thermogenic tissue whose uncoupling increases energy expenditure. The most established BAT activator is cold exposure, which also transforms WAT into “beige cells” that express uncoupling protein 1 (UCP1). Preliminary evidence in rodents suggests exercise elicits similar effects. The purpose of this review...
Source: International Journal of Sports Medicine - April 6, 2020 Category: Sports Medicine Authors: Martin, Alexandra R. Chung, Soonkyu Koehler, Karsten Tags: Review Source Type: research

Addition of Caffeine to a Carbohydrate Feeding Strategy Prior to Intermittent Exercise
Int J Sports Med DOI: 10.1055/a-1121-7817The ergogenic effect of caffeine is well established, although no investigations providing a high carbohydrate feeding strategy (pre-exercise meal=2 g/kg BM) co-ingested with caffeine exist for soccer. This investigation examines the effect of caffeine in addition to a pre-exercise carbohydrate meal and drink mid-way through a soccer simulation. Eight recreational soccer players completed an 85-minute soccer simulation followed by an exercise capacity test (Yo-yo Intermittent Endurance test level 2) on two occasions. Prior to exercise participants consumed a high carbohydrate...
Source: International Journal of Sports Medicine - April 6, 2020 Category: Sports Medicine Authors: Hulton, Andrew T. Vitzel, Kaio Doran, Dominic A. MacLaren, Don P. M. Tags: Nutrition Source Type: research

Influence of Respiratory Muscle Training on Patients ’ Recovery after Lung Resection
In conclusion, the addition of respiratory muscle training to physiotherapy usual care is safe and effective to increase MIP and contribute to improve physical activity. The CombT showed greater improvement on MIP, while IMT compared to EMT, was more effective to improve physical activity. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - April 6, 2020 Category: Sports Medicine Authors: Kendall, Filipa Silva, Gustavo Almeida, Jo ão Eus ébio, Ermelinda Pinho, Paulo Oliveira, Jose Bastos, Pedro Teixeira Tags: Clinical Sciences Source Type: research