open access

https://hdl.handle.net/2115/32951

Effect of blood lactate concentration and the level of oxygen uptake immediately before a cycling sprint on neuromuscular activation during repeated cycling sprints

英語

Fatigue

2006-07

日本生理人類学会

Journal of physiological anthropology

25(4)

267-273

平成18年度日本生理人類学会奨励賞受賞

The purpose of this study was to determine whether neuromuscular activation is affected by blood lactate concentration (La) and the level of oxygen uptake immediately before a cycling sprint (preVO2). The tests consisted of ten repeated cycling sprints for 10 sec with 35-sec (RCS35) and 350-sec recovery periods (RCS350). Peak power output (PPO) was not significantly changed despite an increase in La concentration up to 12 mmol/L in RCS350. Mean power frequency (MPF) of the power spectrum calculated from a surface electromyogram on the vastus lateralis showed a significantly higher level in RCS350. In RCS35, preVO2 level and La were higher than those in RCS350 in the initial stage of the RCS and in the last half of the RCS, respectively. Thus, neuromuscular activation during exercise with maximal effort is affected by blood lactate concentration and the level of oxygen uptake immediately before exercise, suggesting a cyclic system between muscle recruitment pattern and muscle metabolites.

学術雑誌論文

Version of Record

本文データは学協会の許諾に基づきCiNiiから複製したものである

1880-6791

AA12113950