Energy and Macronutrient Intakes in Young Athletes: A Systematic Review and Meta-analysis
Int J Sports Med DOI: 10.1055/a-2108-5691The aim of this study was to conduct a systematic review and meta-analysis of differences in energy and macronutrient intakes between young athletes and non-athletes, considering age, gender and sport characteristics. The study included original research articles that compared energy and macronutrient intakes of 8 to 18-year-old athletes to non-athletes. Mean difference (MD) meta-analyses were performed to quantify energy and macronutrient intake differences between athletes and non-athletes. Eighteen observational studies ...
Source: International Journal of Sports Medicine - November 13, 2023 Category: Sports Medicine Authors: Lehmann, Lisa Giacomoni, Magali Del Sordo, Giovanna Raymond, Jean-Jacques Duch é, Pascale Margaritis, Ir ène Tags: Review Source Type: research

Endurance Performance Adaptations between SSG and HIIT in Soccer Players: A Meta-analysis
The objective of this systematic review with meta-analysis was to compare the endurance performance chronic adaptations induced by running-based high-intensity interval training (HIIT), small-sided games (SSGs), and combined HIIT+SSGs in male and female youth and adult soccer players. The studies included in this review followed the PICOS criteria: (i) healthy soccer players; (ii) interventions based on SSGs; (iii) comparators exposed to only HIIT or combined SSGs+HIIT; (iv) endurance performance variables. Studies were searched for in the following data...
Source: International Journal of Sports Medicine - November 13, 2023 Category: Sports Medicine Authors: Clemente, Filipe Manuel Moran, Jason Ramirez-Campillo, Rodrigo Beato, Marco Afonso, Jos é Tags: Review Source Type: research

CircRNA Larp4b/miR-298-5p/Mef2c Regulates Cardiac Hypertrophy Induced by Angiotensin II
Int J Sports Med DOI: 10.1055/a-2172-8171Cardiac hypertrophy (CH) is an early marker in the clinical course of heart failure. Circular RNAs (circRNAs) play important roles in human disease. However, the role of circ_Larp4b in myocardial hypertrophy has not been studied. Angiotensin II (Ang II) treated HL-1 cells to induce a CH cell model. Quantitative real-time polymerase chain reaction was used to detect the expression of circ_Larp4b, microRNA-298-5p, and myocyte enhancer factor 2 (Mef2c). Western blot detected the protein level of alpha-actinin-2 (ACTN2), ...
Source: International Journal of Sports Medicine - November 13, 2023 Category: Sports Medicine Authors: Xie, Qihai Xu, Xiangdong Xiong, Danqun Yao, Man Zhou, Yafeng Tags: Physiology & Biochemistry Source Type: research

Correction: Autoregulated and Non-Autoregulated Blood Flow Restriction on Acute Arterial Stiffness
Int J Sports Med DOI: 10.1055/a-2197-7700 Georg Thieme Verlag Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents  |  open access Full text (Source: International Journal of Sports Medicine)
Source: International Journal of Sports Medicine - November 9, 2023 Category: Sports Medicine Authors: Rolnick, Nicholas Licameli, Nicholas Moghaddam, Masoud Marquette, Lisa Walter, Jessica Fedorko, Brent Werner, Tim Tags: Erratum Source Type: research

Evaluation of Hip Characteristics in Baseball and Softball Athletes with and Without Throwing Arm Pain
This study aimed to determine differences between hip rotational range of motion and strength based on the presence of throwing-arm pain (yes/no) and throwing sport (baseball/softball). We hypothesized those experiencing pain would display decreases in hip range of motion and strength, and that softball players would display greater range of motion than baseball, but less strength based on sex-specific characteristics. Forty-four baseball (13±2 years, 165.2±13.0 cm, 58.5±13.4 kg) and 50 softball players (13±2 years, 160.9±11.2 cm, ...
Source: International Journal of Sports Medicine - October 27, 2023 Category: Sports Medicine Authors: Oliver, Gretchen D Fava, Anthony Lozowski, Billy Zaremski, Jason L Holtz, Kaila A Bowers, Robert L Tags: Orthopedics & Biomechanics Source Type: research

Physical Activity, Inactivity and Sleep in Individuals with Hypertrophic Cardiomyopathy
Int J Sports Med DOI: 10.1055/a-2166-3918Physical activity presents an important cornerstone in the management and care of individuals with hypertrophic cardiomyopathy (HCM). Twenty-one individuals with HCM (age: 52±15 years old, body mass index (BMI): 30±7 kg/m2) completed 7-day monitoring using wrist-worn triaxial accelerometers (GENEActiv, ActivInsights Ltd, UK) and were compared to age and sex-matched healthy controls (age: 51±14 years old, BMI: 25±4 kg/m2). For individuals with HCM, clinical parameters (left atrial diameter and volume, pea...
Source: International Journal of Sports Medicine - October 27, 2023 Category: Sports Medicine Authors: Charman, Sarah J Blain, Alasdair P Okwose, Nduka C Fuller, Amy S Alyahya, Alaa I Hallsworth, Kate Eggett, Christopher Luke, Peter Bailey, Kristian MacGowan, Guy A Jakovljevic, Djordje G Tags: Clinical Sciences Source Type: research

Musculoskeletal Injuries in Table Tennis during Competition: A Systematic Review
Int J Sports Med DOI: 10.1055/a-2175-6509The study aimed to investigate the incidence of musculoskeletal injuries among table tennis players and identify their associated risk factors. We conducted a literature search in online databases using relevant search terms related to “table tennis” and “injury”. To compare the rate of injuries according to player-related variables, we extracted information on sex, level of games, circumstances of injury, and duration of sport absence after injury. Furthermore, we calculated the odds ratios based on the number of ...
Source: International Journal of Sports Medicine - October 23, 2023 Category: Sports Medicine Authors: Ko, Sang-Hun Cha, Jae-Ryong Lee, Chae-Chil Kim, Min-Seok Park, Ki-Bong Tags: Review Source Type: research

Body Weight Satisfaction, Comments, Nutrition and Injury Risk in 489 Adolescent Elite Athletes
Int J Sports Med DOI: 10.1055/a-2160-1615Exposure to critical body weight comments in youth athletes could lead to decreased self-esteem, affect body image, and increase the risk of eating disorders and cause depressive symptoms. The aim was to explore differences between sex, body mass index, sports type, with regards to body weight satisfaction, exposure to critical body weight comments from their coach and nutrition status in adolescent elite athletes. A questionnaire about body weight, critical body weight comments and nutrition was distributed to 489 ...
Source: International Journal of Sports Medicine - October 17, 2023 Category: Sports Medicine Authors: Frid én, Cecilia Ekenros, Linda Hirschberg, Angelica Lind én von Rosen, Philip Tags: Orthopedics & Biomechanics Source Type: research

Autoregulated and Non-Autoregulated Blood Flow Restriction on Acute Arterial Stiffness
This study aimed to investigate the acute effects of autoregulated and non-autoregulated applied pressures during blood flow restriction resistance exercise to volitional fatigue on indices of arterial stiffness using the Delfi Personalized Tourniquet System. Following a randomized autoregulated or non-autoregulated blood flow restriction familiarization session, 20 physically active adults (23±5 years; 7 females) participated in three randomized treatment-order sessions with autoregulated and non-autoregulated and no blood flow restriction training. Pa...
Source: International Journal of Sports Medicine - October 16, 2023 Category: Sports Medicine Authors: Rolnick, Nicholas Licameli, Nicholas Moghaddam, Masoud Marquette, Lisa Walter, Jessica Fedorko, Brent Werner, Tim Tags: Physiology & Biochemistry Source Type: research

Effects of Training on Running Cost and Aerobic Capacity in Individuals with Obesity
This study investigated running cost (CRun), peak oxygen consumption (V̇ O2peak), and ventilatory threshold (VT1) responses to exercise programs for individuals with obesity. Ninety-four individuals (38.2±7.7 years; 33.4±2.9 kg/m²) were assigned into strength (n=24), endurance (n=26), combined (n=22), and physical activity (control, n=22) groups for 22 weeks, plus diet recommendation. The V̇ O2peak, VT1, and CRun were assessed through a maximal incremental step test. The change of V̇ O2peak in combined (9.9%) differed from t...
Source: International Journal of Sports Medicine - October 12, 2023 Category: Sports Medicine Authors: Castro, Eliane Aparecida Silva, Elisangela Benito, Pedro J Neiva, Cassiano Merussi Pess ôa Filho, Dalton Müller Tags: Training & Testing Source Type: research

Clinical Approach to Inconclusive Subscapularis Tear Diagnosis: a Meta-analysis
Int J Sports Med DOI: 10.1055/a-2158-8278To identify factors associated with subscapularis (SSC) tears and provide a theoretical basis for clinical diagnosis, we included studies related to subscapularis tears published before February 1, 2023. We screened for six predictors across previous studies for the meta-analysis. The predictors included age, sex, coracoid overlap (CO), coracohumeral distance (CHD), impairment of the long head of the biceps tendon (LHB), and dominant arm. The Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of the studies. ...
Source: International Journal of Sports Medicine - October 11, 2023 Category: Sports Medicine Authors: Wang, Hao Cao, Xiangyu Li, Baoqiang Ning, Taiguo Cao, Yongping Tags: Review Source Type: research

Resistance Training Intensity Prescription Methods Based on Lifting Velocity Monitoring
Int J Sports Med DOI: 10.1055/a-2158-3848Resistance training intensity is commonly quantified as the load lifted relative to an individual's maximal dynamic strength. This approach, known as percent-based training, necessitates evaluating the one-repetition maximum (1RM) for the core exercises incorporated in a resistance training program. However, a major limitation of rigid percent-based training lies in the demanding nature of directly testing the 1RM from technical, physical, and psychological perspectives. A potential solution that has gained popularity in th...
Source: International Journal of Sports Medicine - October 9, 2023 Category: Sports Medicine Authors: Ramos, Amador Garc ía Tags: Review Source Type: research

Differences of Bone Mineral Density by Characteristics of Sports in Amenorrheic Athletes
Int J Sports Med DOI: 10.1055/a-2161-5668Hypothalamic amenorrhea leads to a hypoestrogenic state, causing decreased bone mineral density (BMD), while strong impact loading on bone has been shown to increase BMD. The purpose of this study is to compare BMD in female athletes based on menstrual status and their sports/events by impact loading characteristics. BMD at the lumbar spine was measured by dual-energy X-ray absorptiometry and hormone level. The subjects were classified into four groups and BMD and hormone levels were compared among the four groups, which we...
Source: International Journal of Sports Medicine - October 9, 2023 Category: Sports Medicine Authors: Nose-Ogura, Sayaka Yoshino, Osamu Kinoshita, Sakiko Nakamura, Hiroe Harada, Miyuki Hiraike, Osamu Osuga, Yutaka Dohi, Michiko Nakajima, Kohei Kawahara, Takashi Tags: Orthopedics & Biomechanics Source Type: research

Running Functional Threshold versus Critical Power: Same Concept but Different Values
Int J Sports Med DOI: 10.1055/a-2155-6813The aims of this study were (i) to estimate the functional threshold power (FTP) and critical power (CP) from single shorter time trials (TTs) (i. e. 10, 20 and 30 minutes) and (ii) to assess their location in the power-duration curve. Fifteen highly trained athletes randomly performed ten TTs (i. e. 1, 2, 3, 4, 5, 10, 20, 30, 50 and 60 minutes). FTP was determined as the mean power output developed in the 60-min TT, while CP was estimated in the running power meter platform according to the manufacturer...
Source: International Journal of Sports Medicine - October 6, 2023 Category: Sports Medicine Authors: Ñancupil-Andrade, Alberto A Ruiz-Alias, Santiago A. P érez-Castilla, Alejandro Ja én-Carrillo, Diego Garc ía-Pinillos, Felipe Tags: Training & Testing Source Type: research

An Update Of The Allen & Coggan Equation To Predict 60-Min Power Output In Cyclists Of Different Performance Levels
Int J Sports Med DOI: 10.1055/a-2079-1363The Allen & Coggan protocol suggests that 95% of the power output during a 20-min time trial is a valid surrogate for 60-min maximal power. The validity of this concept has not been studied previously in cyclists with different performance levels. As a result, we classified 120 cyclists in our study as recreationally trained, trained, well trained or professional, based on their maximal oxygen consumption. Participants performed a functional threshold power testing protocol based on a 20-min time trial and a 60-min time...
Source: International Journal of Sports Medicine - October 6, 2023 Category: Sports Medicine Authors: Sitko, Sebastian Cirer-Sastre, Rafel L ópez-Laval, Isaac Tags: Training & Testing Source Type: research