Neuromuscular fatigability during repeated-sprint exercise in male athletes

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Purpose - To determine the pattern of neuromuscular fatigability that manifests during repeated sprint running exercise. Methods - Twelve male participants (mean ± SD age, 25 ± 6 yr; stature, 180 ± 7 cm; body mass, 77 ± 7 kg), currently training and competing in intermittent sprint sports, performed a repeated maximal sprint running protocol (12 × 30 m, 30 s rest periods). Pre- and post-exercise twitch responses to transcutaneous motor point stimulation and transcranial magnetic stimulation (TMS) were obtained to assess knee extensor neuromuscular and corticospinal function, respectively. Throughout the protocol, during alternate rest periods, blood lactate samples were taken and a single knee extensor maximal voluntary contraction (MVC) of the knee extensors was performed, with motor point stimulation delivered during and 2 s following, to determine voluntary activation (VA) and peripheral fatigue. Results - The repeated-sprint protocol induced significant increases in sprint time and blood [lactate] from the third sprint onwards (P
Original languageEnglish
Pages (from-to)528-536
JournalMedicine & Science in Sports & Exercise
Issue number3
Publication statusPublished - Mar 2015


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