Caffeine Increases VerticalJumping Height in Young Trained Males Before But Not After a Maximal Effort Strength Training Session
作者机构：Department of Physical PerformanceNorwegian School of Sport SciencesSognsveien 220UllevaI StadionPO Box 40140806 OsloNorway Steno Diabetes Center OdenseOdense University Hospital5000 Odense CDenmark
出 版 物：《Journal of Science in Sport and Exercise》 (体育运动科学（英文）)
年 卷 期：2020年第2卷第2期
页 面：145-153页
学科分类：0403[教育学-体育学] 040302[教育学-运动人体科学(可授教育学、理学、医学学位)] 04[教育学]
基 金：Norges Idrettshøgskole NIH
主 题：Lactate Fatigue Recovery Force-velocity Athletes
摘 要：The aim of the present study was to investigate the effect of caffeine on vertical jumping height in rested condition and after a heavy strength training *** well-trained young males with experience in jump and strength training were included in this double-blinded,randomised study with cross-over ***(3 mg/kg body weight)or placebo were ingested 45 min prior to the jump *** was performed on a force platform and vertical jumping height was *** a standardized warm up,participants performed jumping series consisting of three maximal jumps with 30 s rest between jumps followed by five maximal jumps with 7 s rest between *** participants performed a heavy strength training of the leg muscles(leg press:3×15 reps)and the jumping series was repeated immediately after(30 s),and after 5 min and 15 min *** increased the maximal vertical counter movement jump height(P≤0.05)and mean value of the 5-jump sequence prior to the strength *** increased jump height by 2.2 cm±0.5 cm at the first *** lactate after the strength training increased to 6.97±1.20 and 7.77±0.54 mmol/L in PLA and CAF,respectively(P=0.19).The jump height was reduced by 8 cm after the strength *** were no differences in jump height after ingestion of caffeine or placebo immediately after the strength training session or in the recovery period,but blood lactate in the recovery period was higher in CAF compared to PLA(ANOVA;P0.05).Conclusion:Caffeine increased the vertical jump height in the resting ***,after a maximal effort strength training session the positive effect of caffeine was no longer significant.
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