Active warm-up and time-of-day effects on repeated-sprint performance and post-exercise recovery.

Autor: Carmo, Adriano A. L., Goulart, Karine N. O., Cabido, Christian E. T., Martins, Ygor A. T., Santos, Gabriela C. F., Shang, Felipe L. T., Prado, Luciano S., Soares, Danusa D., de Mello, Marco T., Mendes, Thiago T., Silami-Garcia, Emerson, Wanner, Samuel P.
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Zdroj: European Journal of Applied Physiology; Jan2023, Vol. 123 Issue 1, p49-64, 16p
Abstrakt: Purpose: This study investigated the effects of both an active warm-up and the time-of-day variation on repeated-sprint performance. A second objective was to compare the post-exercise recovery between the experimental conditions. Methods: Eleven male participants performed ten maximal cycling sprints (6 s each, with a 30-s interval between them) in the morning and late afternoon, either after a warm-up or control condition. The warm-up consisted of cycling for 10 min at 50% of the peak aerobic power. Results: Rest measurements of rectal, muscle, and skin temperatures were higher in the afternoon compared to the morning (p < 0.05), with no significant differences in heart rate (p = 0.079) and blood lactate concentration (p = 0.300). Warm-up increased muscle temperature, heart rate, and lactate, and reduced skin temperature (all p < 0.001), though no significant differences were observed for rectal temperature (p = 0.410). The number of revolutions (p = 0.034, ηp2 = 0.375), peak (p = 0.034, ηp2 = 0.375), and mean (p = 0.037, ηp2 = 0.365) power of the first sprint (not the average of ten sprints) were higher in the afternoon compared to the morning, regardless of warm-up. However, beneficial performance effects of warming up were evident for the first (p < 0.001) and the average of ten sprints (p < 0.05), regardless of time of day. More remarkable changes during the 60-min post-exercise were observed for rectal temperature (p = 0.005) and heart rate (p = 0.010) in the afternoon than in the morning. Conclusion: Warming-up and time-of-day effects in enhancing muscular power are independent. Although warm-up ensured further beneficial effects on performance than the time-of-day variation, a faster post-exercise recovery was observed in the late afternoon. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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