both training and competition, is widely recognized to have various negative effects, including diminished stroke volume, compromised cognitive functions, and reduced anaerobic power, 19 – 21 as well as impaired motor skills. 22 – 24 Furthermore, the loss of fluids through sweat during physical
Search Results
The Cognitive Function and Taekwondo-Specific Kick Performance of Taekwondo Athletes at Different Hydration Statuses
Ai-Chi Zheng, Cheng-Shiun He, Chi-Cheng Lu, Bao-Lien Hung, Kuei-Ming Chou, and Shih-Hua Fang
Longitudinal Development of Physical Characteristics and Function in Japanese Junior Rugby Union Players
Akira Kumazaki, Tomomi Fujimoto, and Yuiko Matsuura
reported in a variety of team sports. 3 , 4 Concerning junior rugby players, physical characteristics and physical function improve with increasing age, as demonstrated by studies in the top-ranked rugby countries in the world: Ireland, South Africa, England, and Australia. 5 – 10 These findings have
The Relationship Between Neuromuscular Function and the W′ in Elite Cyclists
Mehdi Kordi, Len Parker Simpson, Kevin Thomas, Stuart Goodall, Tom Maden-Wilkinson, Campbell Menzies, and Glyn Howatson
, and H + ) within the exercising muscle 4 , 11 and that a greater degree of peripheral disturbance is associated with a higher W ′. 12 Recent work in the determinants of W ′ indicates that the size and function of the involved skeletal muscle are potentially influential. 5 , 6 , 13 Quadriceps
Effect of Vitamin D on Muscle Function and Injury in Elite Adolescent Dancers: A Randomized Double-Blind Study
Matthew A. Wyon, Roger Wolman, Nicolas Kolokythas, Karen Sheriff, Shaun Galloway, and Adam Mattiussi
to examine whether vitamin D supplementation can improve muscle function and injury incidence in adolescent elite dancers. Materials and Methods Experimental Design The study implemented a randomized double-blind methodology. Supplementation was organized by an independent researcher who prepared the
Curcumin Attenuates Delayed-Onset Muscle Soreness and Muscle Function Deficits Following a Soccer Match in Male Professional Soccer Players
William Abbott, Emily J. Hansell, Adam Brett, Jakob Škarabot, Lewis J. James, and Tom Clifford
exercise, 1 impacting exercise performance in the subsequent days. Several studies have shown that soccer, an intense intermittent sport, evokes deficits in muscle function and DOMS that can last for 72 hours following matches. 4 As soccer players often have limited recovery time between matches (48
Sex-Related Changes in Physical Performance, Well-Being, and Neuromuscular Function of Elite Touch Players During a 4-Day International Tournament
Nick Dobbin, Cari Thorpe, Jamie Highton, and Craig Twist
-being and neuromuscular function was observed, which was negatively associated with several performance variables including relative distance, high-speed running, and number of repeated high-intensity efforts. 8 It is important to note that rugby sevens and rugby league both involve contact, which will
Impact-Induced Muscle Damage and Contact Sports: Etiology, Effects on Neuromuscular Function and Recovery, and the Modulating Effects of Adaptation and Recovery Strategies
Mitchell Naughton, Joanna Miller, and Gary J. Slater
potential to adversely affect neuromuscular function and prolong athletic recovery. It is well known that high-intensity and/or unaccustomed eccentric exercise causes EIMD through exposure to an inappropriate level of mechanical stress. 6 EIMD results in soreness, myofibrillar disruption, and release of
Effect of the Fran CrossFit Workout on Oxygen Uptake Kinetics, Energetics, and Postexercise Muscle Function in Trained CrossFitters
Manoel Rios, Klaus Magno Becker, Ana Sofia Monteiro, Pedro Fonseca, David B. Pyne, Victor Machado Reis, Daniel Moreira-Gonçalves, and Ricardo J. Fernandes
-s intervals in-between) and a prone plank exercise to assess muscle function responses at baseline and 5 minutes, 30 minutes, and 24 hours post-Fran. Methodology Height and body mass were obtained using a digital scale with a built-in stadiometer (SECA, model 220), with body mass index determined as
Compression Garments, Muscle Contractile Function, and Economy in Trail Runners
Fabrice Vercruyssen, Mathieu Gruet, Serge S. Colson, Sabine Ehrstrom, and Jeanick Brisswalter
Background:
Physiological mechanisms behind the use of compression garments (CGs) during off-road running are unknown.
Purpose:
To investigate the influence of wearing CGs vs conventional running clothing (CON) on muscle contractile function and running economy before and after short-distance trail running.
Methods:
Knee-extensor neuromuscular function and running economy assessed from two 5-min treadmill runs (11 and 14 km/h) were evaluated before and after an 18.6-km short-distance trail run in 12 trained athletes wearing either CGs (stocking + short-tight) or CON. Quadriceps neuromuscular function was assessed from mechanical and EMG recording after maximal percutaneous electrical femoral-nerve stimulations (single-twitch doublets at 10 [Db10] and 100 Hz [Db100] delivered at rest and during maximal quadriceps voluntary contraction [MVC]).
Results:
Running economy (in mL O2 · km–1 · kg–1) increased after trail running independent of the clothing condition and treadmill speeds (P < .001). Similarly, MVC decreased after CON and CGs conditions (–11% and –13%, respectively, P < .001). For both clothing conditions, a significant decrease in quadriceps voluntary activation, Db10, Db100, and the low-to-high frequency doublet ratio were observed after trail running (time effect, all P < .01), without any changes in rectus femoris maximal M-wave.
Conclusions:
Wearing CGs does not reduce physiological alterations induced during short-distance trail running. Further studies should determine whether higher intensity of compression pressure during exercises of longer duration may be effective to induce any physiological benefits in experienced trail runners.
Development and Predictive Validation of the Brazilian Adductor Performance Test for Estimating the Chance of Hip Adductor Injuries in Elite Soccer Athletes
Jeffeson Hildo Medeiros de Queiroz, João Paulo Frota, Filipe Abdala dos Reis, and Rodrigo Ribeiro de Oliveira
muscle injuries. We also highlight that the BAPT has excellent interexaminer agreement and can indirectly reduce the rate of this injury at soccer clubs. Acknowledgments The authors thank Ceará Sporting Club and Master Program in Physical Therapy and Functioning, Department of Physical Therapy—UFC, for
