No Influence of Prematch Subjective Wellness Ratings on External Load During Elite Australian Football Match Play.
CONCLUSION: The results of this study suggest that prematch perceived wellness does not relate to external match load in elite Australian football players. The between-matches microcycle length appears to be sufficient to restore perceived wellness to values that do not affect the subsequent external match loads. PMID: 32053792 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 15, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Affective Feelings and Perceived Exertion During a 10-km Time Trial and Head-to-Head Running Race.
CONCLUSIONS: AFs are directly influenced by the presence of opponents during an HTH race, and a more positive AF could be involved in the dissociation between RPE and running speed and, consequently, the overall race performance. PMID: 32050163 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 14, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Field-Derived Power-Duration Variables to Predict Cycling Time-Trial Performance.
Authors: Nimmerichter A, Prinz B, Gumpenberger M, Heider S, Wirth K Abstract PURPOSE: To evaluate the predictive validity of critical power (CP) and the work above CP (W') on cycling performance (mean power during a 20-min time trial; TT20). METHODS: On 3 separate days, 10 male cyclists completed a TT20 and 3 CP and W' prediction trials of 1, 4, and 10 min and 2, 7, and 12 min in field conditions. CP and W' were modeled across combinations of these prediction trials with the hyperbolic, linear work/time, and linear power inverse-time (INV) models. The agreement and the uncertainty between the predicte...
Source: International Journal of Sports Physiology and Performance - February 12, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Hydrogen-Rich Water Supplementation and Up-Hill Running Performance: Effect of Athlete Performance Level.
CONCLUSIONS: HRW intake had an unclear antifatigue effect on performance in terms of mean group values. However, it appears that the magnitude of the antifatigue effect of HRW on performance depends on individual running ability. PMID: 32045879 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 12, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Acute Ketone Supplementation and Exercise Performance: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
CONCLUSIONS: The present findings suggest that ketone supplementation exerts no clear influence on exercise performance (from sprints to events lasting up to ∼50 min) or metabolic, respiratory, cardiovascular, or perceptual responses to exercise. More research is needed to elucidate if this strategy could provide ergogenic effects on other exercise types (eg, ultraendurance exercise). PMID: 32045881 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 12, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Relationship Between Tethered Swimming in a Flume and Swimming Performance.
Authors: Ruiz-Navarro JJ, Morouço PG, Arellano R Abstract PURPOSE: To study the relationship between tethered swimming in a flume at different speeds and swimming performance. METHODS: Sixteen regional-level swimmers performed 25-, 50-, and 100-m front-crawl trials and four 30-s tethered-swimming tests at 0, 0.926, 1.124, and 1.389 m·s-1 water-flow velocities. Average and maximum force, average and maximum impulse, and intracyclic force variation (dF) were estimated for each tethered-swimming trial. Swimming velocity and intracyclic velocity variation (dv) were obtained for each free-swimming...
Source: International Journal of Sports Physiology and Performance - February 9, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effect of Carbohydrate Mouth Rinsing on Multiple Choice Reaction Time During Amateur Boxing.
CONCLUSION: There is no evidence to support the use of CMR during sparring in amateur boxers. PMID: 32015212 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Impact of Training Load on Sleep During a 14-Day Training Camp in Elite, Adolescent, Female Basketball Players.
Authors: Lastella M, Roach GD, Vincent GE, Scanlan AT, Halson SL, Sargent C Abstract PURPOSE: To quantify the sleep/wake behaviors of adolescent, female basketball players and to examine the impact of daily training load on sleep/wake behaviors during a 14-day training camp. METHODS: Elite, adolescent, female basketball players (N = 11) had their sleep/wake behaviors monitored using self-report sleep diaries and wrist-worn activity monitors during a 14-day training camp. Each day, players completed 1 to 5 training sessions (session duration: 114 [54] min). Training load was determined using the session rat...
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Analyzing the Seasonal Changes and Relationships in Training Load and Wellness in Elite Volleyball Players.
CONCLUSIONS: The results of this study suggest that the load was meaningfully higher during early season; however, stress was higher during the final stages of the season. Overall, it was also found that the acute load is more highly correlated with well-being status and its variations than chronic load or training monotony. PMID: 32015214 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Changes in Core Temperature During an Elite Female Rugby Sevens Tournament.
CONCLUSIONS: Elite WRWSS athletes experienced high Tc during WU (Tc peak 37.9-39.0°C) and matches (Tc peak 37.9-39.8°C), a magnitude known to reduce intermittent high-intensity physical performance (≥39°C). The CWI protocol resulted in players (≥6-min match play) with ∼1°C to 2°C raised Tc compared with Tc at WU onset. PMID: 32023538 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

A Complex Relationship: Sleep, External Training Load, and Well-Being in Elite Australian Footballers.
CONCLUSIONS: Maximum speed, player load, and PL2D were the common associations between objective sleep characteristics and well-being in AF players. Improving pretraining sleep quality and quantity may have a positive impact on AF players' well-being and movement strategy during field sessions. Following training sessions that have high maximum speed and PL2D, the increased requirement for sleep should be considered by ensuring that subsequent sessions do not start earlier than required. PMID: 32023542 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Insights for Blood Flow Restriction and Hypoxia in Leg Versus Arm Submaximal Exercise.
Authors: Willis SJ, Millet GP, Borrani F Abstract PURPOSE: To assess tissue oxygenation, along with metabolic and physiological responses during blood flow restriction (BFR, bilateral vascular occlusion) and systemic hypoxia conditions during submaximal leg- versus arm-cycling exercise. METHODS: In both legs and arms, 4 randomized sessions were performed (normoxia 400 m, fraction of inspired oxygen [FIO2] 20.9% and normobaric hypoxia 3800 m, FIO2 13.1% [0.1%]; combined with BFR at 0% and 45% of resting pulse elimination pressure). During each session, a single 6-minute steady-state submaximal exercise...
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Improved Physical Performance and Decreased Muscular and Oxidative Damage With Postlunch Napping After Partial Sleep Deprivation in Athletes.
Authors: Romdhani M, Souissi N, Chaabouni Y, Mahdouani K, Driss T, Chamari K, Hammouda O Abstract PURPOSE: To investigate the effects of napping after partial sleep deprivation (PSD) on reaction time, mood, and biochemical response to repeated-sprint exercise in athletes. METHODS: Nine male judokas performed 4 test sessions in a counterbalanced and randomized order. Participants accomplished 1 control session after a normal sleep night (NSN) and 3 after PSD with (1) no nap, (2) ∼20-min nap (N20), and (3) ∼90-min nap (N90) opportunities. Test sessions included the running-based anaerobic s...
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effects of Daily Cold-Water Recovery and Postexercise Hot-Water Immersion on Training-Load Tolerance During 5 Days of Heat-Based Training.
CONCLUSION: These findings suggest that cold-water recovery may negatively affect TL during 5 days of heat-based training, hot-water recovery could increase session-RPE TL, and the session-RPE method can detect environmental temperature-mediated increases in TL in the context of this study. PMID: 32023545 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Core Temperature Responses to Elite Racewalking Competition.
CONCLUSIONS: Elite/preelite race walkers experience rectal temperatures>40°C during competition despite only moderate-warm conditions, and even when precooling and midcooling strategies are applied. PMID: 32023546 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Transcranial Direct Current Stimulation: No Effect on Aerobic Performance, Heart Rate, or Rating of Perceived Exertion in a Progressive Taekwondo-Specific Test.
CONCLUSIONS: Extracephalic bihemispheric a-tDCS over M1 did not influence the aerobic performance of taekwondo athletes or their psychophysiological responses, so athletes and staff should be cautious when using it in a direct-to-consumer manner. PMID: 32023547 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

A Simple Equation to Estimate Half-Marathon Race Time From the Cooper Test.
Authors: Alvero-Cruz JR, Standley RA, Giráldez-García MA, Carnero EA Abstract BACKGROUND: Half-marathon races have become increasingly more popular with many recreational athletes all around the world. New and recreational runners are likely to have the greatest need for training advice to set running paces during long-distance races. PURPOSE: To develop a simple equation to estimate half-marathon time from the Cooper test and verify its validity. METHODS: One hundred ninety-eight recreational runners (177 men and 21 women, 40 [6.8] years and 33.7 [8] years, respectively) participated in this ...
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Increased Oxidative Stress in Injured and Ill Elite International Olympic Rowers.
Authors: Lewis NA, Simpkin AJ, Moseley S, Turner G, Homer M, Redgrave A, Pedlar CR, Burden R Abstract BACKGROUND: Identifying strategies that reduce the risk of illness and injury is an objective of sports science and medicine teams. No studies have examined the relationship between oxidative stress (OS) and illness or injury in international athletes undergoing periods of intensified training and competition. PURPOSE: The authors aimed to identify relationships between illness, injury, and OS. METHODS: A longitudinal, observational study of elite male rowers (n = 10) was conducted over 18 weeks, leading in...
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Multidisciplinary Process Leading to Return From Underperformance and Sustainable Success in the World's Best Cross-Country Skier.
CONCLUSIONS: Overall, the current case study could be used as a framework for the holistic approach to treating an overtraining condition and for generation of new hypothesis in this exiting area. PMID: 32000138 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Mechanical Properties of Treadmill Surfaces and Their Effects on Endurance Running.
CONCLUSIONS: The considerably higher shock absorption of the treadmill than the tartan surface leads to a reduction in the amount of energy returned to the athlete, which in turn increases physiological stress and rating of perceived exertion during endurance running. PMID: 32000139 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Vertical Versus Horizontal Resisted Sprint Training Applied to Young Soccer Players: Effects on Physical Performance.
CONCLUSIONS: Independent of the orientation of the resistance applied, RST is an effective training method for improving sprinting and COD performance. Nevertheless, VRS may promote greater improvements on sprint and COD ability and have a positive additional effect on countermovement jump performance and the reduction of COD deficit. PMID: 32000140 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

A Comparison of Heart Rate Training Load and Perceptual Effort Between Masters and Young Cyclists.
CONCLUSIONS: HR and RPE values were comparable between masters and young cyclists when relative HR responses and HR training load models are used. This finding suggests HR and RPE methods used to monitor or prescribe training load can be used interchangeably between masters and young athletes irrespective of chronological age. PMID: 32000141 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - February 1, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effects of In-Season, Low-Volume Sprint Interval Training With and Without Sport-Specific Actions on the Physical Characteristics of Elite Academy Rugby League Players.
CONCLUSIONS: Two weeks of SITr/s and SITr were effective for improving physical characteristics, heart rate recovery, and submaximal responses to the prone Yo-Yo IR1, with no clear change in well-being and neuromuscular function. Between-group analysis favored the SITr/s group, suggesting that the inclusion of sport-specific actions should be considered for in-season conditioning of rugby league players. PMID: 31995787 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - January 30, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Individualizing Training in Swimming: Evidence for Utilizing the Critical Speed and Critical Stroke Rate Concepts.
CONCLUSION: HIIT prescribed based on the CS and CSR concepts was associated with improvements in several physiological, technical, and performance parameters in highly trained swimmers while utilizing time- and resource-efficient approach. This was achieved despite a ≥25% reduction in training volume. PMID: 31991399 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - January 29, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Acute Effect of Mental Fatigue on Badminton Performance in Elite Players.
CONCLUSION: Despite being more mentally fatigued after the Stroop test than in the control condition, performance was not negatively affected during a BST. In addition, no differences in physiological measures were observed. PMID: 31968307 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - January 23, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effect of Sodium Bicarbonate Supplementation on the Decline in Gross Efficiency During a 2000-m Cycling Time Trial.
CONCLUSIONS: NaHCO3 supplementation results in an unclear effect on the decrease in GE during high-intensity exercise and in a very likely trivial effect on performance. PMID: 31952047 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - January 19, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Influence of Faster and Slower Recovery-Profile Classifications, Self-Reported Sleep, Acute Training Load, and Phase of the Microcycle on Perceived Recovery in Futsal Players.
Authors: Wilke CF, Wanner SP, Santos WHM, Penna EM, Ramos GP, Nakamura FY, Duffield R Abstract PURPOSE: To determine whether daily perceived recovery is explained from a multifactorial single-session classification of recovery (ie, faster vs slower) or other circumstantial factors (ie, previous training load, self-reported sleep, or phase of the microcycle). METHODS: Nineteen elite male futsal players were initially allocated to a recovery-classification group (faster recovery, slower physiological, or slower perceptual) based on previous research using a multifactorial cluster-analysis technique. Dur...
Source: International Journal of Sports Physiology and Performance - January 3, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Key Success Factors for Merging Sport Science and Best Practice.
Authors: Haugen T PMID: 31883503 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - December 30, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Role of Sport Science in the New Age of Digital Sport.
Authors: Sandbakk Ø PMID: 31883504 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - December 30, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Effects of Postexercise Sauna Bathing on Recovery of Swim Performance.
CONCLUSION: Based on published findings, the smallest substantial change in swimming performance is an increase in time of more than 1.2 s; thus, the observed reductions appear relevant for competitive swimmers. According to the current results, coaches and athletes should be careful with postexercise SAU if high-intensity training and/or competitions are scheduled on the following day. PMID: 31869820 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - December 24, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Effects of Foot-Strike Patterns on Biomarkers S100 Calcium-Binding Protein B/Neuron-Specific Enolase in Running-A Pilot Study.
This study investigated the effects of running with RFS or FFS on impact-sensitive neuronal biomarkers S100 calcium-binding protein B (S100B), neuron-specific enolase (NSE), and lactate dehydrogenase (LDH). METHODS: In this randomized crossover study, 18 healthy recreational runners (14 male, mean [SD] age 28.2 [4.7] y, body mass index 22.8 [1.9]) ran 2 separate 5-mile runs with RFS or FFS, respectively. Blood samples were taken before (pre), 30 min after (post 0), and 24 h after (post 24) the run. S100B, NSE, and LDH concentrations were determined and analyzed (3 × 2 data model). RESULTS: S100...
Source: International Journal of Sports Physiology and Performance - December 22, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effects of Lower-Extremity Plyometric Training on Soccer-Specific Outcomes in Adult Male Soccer Players: A Systematic Review and Meta-Analysis.
CONCLUSION: This review and meta-analysis showed that plyometric training improved jump height, 20-m sprint speed, and endurance, but not strength, sprint speed over other distances, or agility in male adult soccer players. However, the low quality of the included studies and substantial heterogeneity means that results need to be interpreted with caution. Future high-quality research should indicate whether or not plyometric training can be used to improve soccer-specific outcomes and thereby enhance performance. PMID: 31810063 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - December 7, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Nihil Novum Sub Sole.
Authors: Boullosa D PMID: 31783372 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 30, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Recovery Kinetics After Speed-Endurance Training in Male Soccer Players.
Authors: Tzatzakis T, Papanikolaou K, Draganidis D, Tsimeas P, Kritikos S, Poulios A, Laschou VC, Deli CK, Chatzinikolaou A, Batrakoulis A, Basdekis G, Mohr M, Krustrup P, Jamurtas AZ, Fatouros IG Abstract PURPOSE: To determine the recovery kinetics of performance, muscle damage, and neuromuscular fatigue following 2 speed-endurance production training (SEPT) protocols in soccer. METHODS: Ten well-trained, male soccer athletes randomly completed 3 trials: work-to-rest ratio (SEPT) 1:5, SEPT/1:8, and a control trial. Training load during SEPT was monitored using global positioning system and heart-rate monitors....
Source: International Journal of Sports Physiology and Performance - November 23, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Current Evidence and Practical Applications of Flywheel Eccentric Overload Exercises as Postactivation Potentiation Protocols: A Brief Review.
CONCLUSIONS: EOL exercise can be used to stimulate PAP responses to obtain performance advantages in various sports. However, future research is needed to determine which EOL exercise modalities among intensity, volume, and rest intervals optimally induce the PAP phenomenon and facilitate transfer effects on athletic performances. PMID: 31743092 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 20, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Comparison of Training Monitoring and Prescription Methods in Sprint Kayaking.
Authors: Hogan C, Binnie MJ, Doyle M, Lester L, Peeling P Abstract PURPOSE: To compare methods of monitoring and prescribing on-water exercise intensity (heart rate [HR], stroke rate [SR], and power output [PO]) during sprint kayak training. METHODS: Twelve well-trained flat-water sprint kayak athletes completed a preliminary on-water 7 × 4-min graded exercise test and a 1000-m time trial to delineate individual training zones for PO, HR, and SR into a 5-zone model (T1-T5). Subsequently, athletes completed 2 repeated trials of an on-water training session, where intensity was prescribed based on individua...
Source: International Journal of Sports Physiology and Performance - November 20, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Individualized Training Based on Force-Velocity Profiling During Jumping in Ballet Dancers.
CONCLUSION: A training program addressing F-VIMB is an effective way to improve CMJ height in female ballet dancers. PMID: 31715582 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 14, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

"How Am I Going, Coach?"-The Effect of Augmented Feedback During Small-Sided Games on Locomotor, Physiological, and Perceptual Responses.
CONCLUSIONS: In this study, verbal feedback did not alter locomotor, physiological, or perceptual responses in rugby players during SSGs. This may be due to contextual factors (eg, opposition) or the type (ie, distance) or low frequency of feedback provided. PMID: 31715583 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 14, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Training Characteristics of Male and Female Professional Road Cyclists: A 4-Year Retrospective Analysis.
CONCLUSIONS: Substantial differences in training characteristics exist between male and female professional cyclists. Particularly, it seems that female professional cyclists compensate their lower training volume, with a higher training intensity, in comparison with male professional cyclists. PMID: 31722298 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 14, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Poor Sleep Quality's Association With Soccer Injuries: Preliminary Data.
CONCLUSIONS: Soccer players who exhibit lower sleep quality or nonrestorative sleep show associations with increased number and severity of musculoskeletal injuries. PMID: 31711034 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 13, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Enhanced Decision Making and Working Memory During Exercise in the Heat With Crushed Ice Ingestion.
CONCLUSIONS: Precooling via ICE maintained cognitive accuracy in decision making and working memory during exercise in the heat. Thus, ICE may have the potential to improve sporting performance by resisting deleterious effects of exercise in a hot and humid environment on cognitive function. PMID: 31711038 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 13, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Maximal Lactate Steady State Versus the 20-Minute Functional Threshold Power Test in Well-Trained Individuals: "Watts" the Big Deal?
CONCLUSIONS: The results indicate that the PO at FTP95% is different to MLSS, and that changes in the PO at MLSS after training were not reflected by FTP95%. Even when using an adjusted percentage (ie, 88% rather than 95% of FTP20), the large variability in the data is such that it would not be advisable to use this as a representation of MLSS. PMID: 31689684 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 9, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Warm-Up With Dynamic Stretching: Positive Effects on Match-Measured Change of Direction Performance in Young Elite Volleyball Players.
Authors: Turki O, Dhahbi W, Padulo J, Khalifa R, Ridène S, Alamri K, Milić M, Gueid S, Chamari K Abstract PURPOSE: To explore the immediate (15-s post-warm-up) and the delayed (after 20 and 40 min of simulated volleyball play) effects of 2 different warm-up protocols-a stretching-free volleyball warm-up (NS) and a warm-up incorporating dynamic stretching (DS)-on subsequent change of direction (COD) performance in young elite volleyball players. METHODS: Sixteen male players (age 16.88 [0.34] y, body mass 75.81 [5.41] kg, body height 1.91 [0.05] m, body mass index 20.84 [1.79] kg...
Source: International Journal of Sports Physiology and Performance - November 9, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists.
Authors: Almquist NW, Ettema G, Hopker J, Sandbakk Ø, Rønnestad BR Abstract BACKGROUND: Cycling competitions are often of long duration and include repeated high-intensity efforts. PURPOSE: To investigate the effect of repeated maximal sprints during 4 hours of low-intensity cycling on gross efficiency (GE), electromyography patterns, and pedaling technique compared with work-matched low-intensity cycling in elite cyclists. METHODS: Twelve elite, male cyclists performed 4 hours of cycling at 50% of maximal oxygen uptake either with 3 sets of 3 × 30-second maximal sprints (E&S) during...
Source: International Journal of Sports Physiology and Performance - November 9, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Player Session Rating of Perceived Exertion: A More Valid Tool Than Coaches' Ratings to Monitor Internal Training Load in Elite Youth Female Basketball.
Authors: Lupo C, Ungureanu AN, Frati R, Panichi M, Grillo S, Brustio PR Abstract PURPOSE: To monitor elite youth female basketball training to verify whether players' and coaches' (3 technical coaches and 1 physical trainer) session rating of perceived exertion (s-RPE) has a relationship with Edwards' method. METHODS: Heart rate of 15 elite youth female basketball players (age 16.7 [0.5] y, height 178 [9] cm, body mass 72 [9] kg, body mass index 22.9 [2.2] kg·m-2) was monitored during 19 team (268 individual) training sessions (102 [15] min). Mixed effect models were applied to e...
Source: International Journal of Sports Physiology and Performance - November 9, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Effects of Strength Training on Olympic Time-Based Sport Performance: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
Authors: Lum D, Barbosa TM Abstract PURPOSE: To evaluate the effect of strength training on Olympic time-based sports (OTBS) time-trial performance and provide an estimate of the impact of type of strength training, age, training status, and training duration on OTBS time-trial performance. METHODS: A search on 3 electronic databases was conducted. The analysis comprised 32 effects in 28 studies. Posttest time-trial performance of intervention and control group from each study was used to estimate the standardized magnitude of impact of strength training on OTBS time-trial performance. RESULTS: Strength tra...
Source: International Journal of Sports Physiology and Performance - November 2, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Longitudinal Changes in the Physical Development of Elite Adolescent Rugby Union Players: Effect of Playing Position and Body Mass Change.
CONCLUSION: These findings provide novel normative data for longitudinal changes in junior rugby union players and suggest that coaches should account for changes in body mass when targeting increases in speed and aerobic fitness. PMID: 31672927 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 2, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Effects of In-Season Velocity- Versus Percentage-Based Training in Academy Rugby League Players.
CONCLUSION: VBT can be implemented during the competitive season, instead of traditional PBT, to improve training stimuli, decrease training stress, and promote velocity-specific adaptations. PMID: 31672928 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 2, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Does Mathematical Coupling Matter to the Acute to Chronic Workload Ratio? A Case Study From Elite Sport.
CONCLUSIONS: There may be low risk of mathematical coupling causing spurious correlations in the TL-injury-risk relationship. Varying levels of correlation seem to exist naturally between acute and chronic TL variables regardless of coupling. The trivial to small effect sizes and large to nearly perfect correlations between coupled and uncoupled AWCRs also imply that mathematical coupling may have little effect on either calculation method, if practitioners choose to apply the ACWR for TL monitoring purposes. PMID: 31672929 [PubMed - as supplied by publisher] (Source: International Journal of Sports Physiology and Performance)
Source: International Journal of Sports Physiology and Performance - November 2, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research

Genomic Prediction of Tendinopathy Risk in Elite Team Sports.
Authors: Rodas G, Osaba L, Arteta D, Pruna R, Fernández D, Lucia A Abstract PURPOSE: The authors investigated the association between risk of tendinopathies and genetic markers in professional team sports. METHODS: The authors studied 363 (mean [SD]; 25 [6] y, 89% male) elite players (soccer, futsal, basketball, handball, and roller hockey) from a top-level European team (FC Barcelona, Spain). Of 363, 55% (cases) had experienced 1+ episodes of tendinopathy during 2008-2018 and 45% (controls) remained injury free. The authors first examined the association between single-nucleotide polymorphisms (SNP...
Source: International Journal of Sports Physiology and Performance - October 18, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research