Purpose:The purpose of this study was to compare the effects of intermittent sprint training and plyometric training on endurance running performance.Methods:Fourteen moderately trained male endurance runners were all...Purpose:The purpose of this study was to compare the effects of intermittent sprint training and plyometric training on endurance running performance.Methods:Fourteen moderately trained male endurance runners were allocated into either the intermittent sprint training group(n = 7)or the plyometric training group(n = 7).The preliminary tests required subjects to perform a treadmill graded exercise test,a countermovement jump test for peak power measurement,and a 10-km time trial.Training included 12 sessions of either intermittent sprint or plyometric training carried out twice per week.On completion of the intervention,post-tests were conducted.Results:Both groups showed significant reduction in weekly training mileage from pre-intervention during the intervention period.There were significant improvements in the 10-km time trial performance and peak power.There was also significant improvement in relative peak power for both groups.The 10-km time trial performance and relative peak power showed a moderate inverse correlation.Conclusion:These findings showed that both intermittent sprint and plyometric training resulted in improved 10-km running performance despite reduction in training mileage.The improvement in running performance was accompanied by an improvement in peak power and showed an inverse relationship with relative peak power.展开更多
目的:观察踝关节牵伸训练对脑卒中患者下肢功能的疗效并讨论其机制。方法:25例脑卒中患者随机分为12例跟腱牵伸组(试验组)和13例直腿抬高组(对照组),两组均采用多关节下肢康复机器人系统LR2进行为期2周训练,共12次,每次45min。训练前后...目的:观察踝关节牵伸训练对脑卒中患者下肢功能的疗效并讨论其机制。方法:25例脑卒中患者随机分为12例跟腱牵伸组(试验组)和13例直腿抬高组(对照组),两组均采用多关节下肢康复机器人系统LR2进行为期2周训练,共12次,每次45min。训练前后采用等速测试系统进行实验室评定踝关节被动峰力矩、踝关节主动峰力矩、踝关节主动、被动活动范围(passive range of motion,PROM)、力矩-角速度斜率(SLOPE);临床评定改良Ashworth量表(modified Ashworth scale,MAS)、临床痉挛指数(clinical spasticity index,CSI)。结果:训练前两组患者的一般资料、实验室及临床各项评定结果无显著性差异(P>0.05)。训练2周后,两组间踝关节被动峰力矩在角速度10°/s、60°/s、120°/s、180°/s差异有显著性意义(P<0.05),240°/s时无显著性差异(P>0.05);踝关节主动峰力矩在角速度60°/s两组间差异有显著性意义(P<0.05),120°/s、180°/s无显著性差异(P>0.05),SLOPE训练后两组间有显著性差异(P<0.05);试验组AROM、PROM、MAS、CSI改善情况明显优于对照组,差异有显著性意义(P<0.05)。结论:踝关节牵伸训练有效降低脑卒中患者痉挛,改善关节活动度,提高肌肉力量,是一种较为有效的治疗手段。展开更多
文摘Purpose:The purpose of this study was to compare the effects of intermittent sprint training and plyometric training on endurance running performance.Methods:Fourteen moderately trained male endurance runners were allocated into either the intermittent sprint training group(n = 7)or the plyometric training group(n = 7).The preliminary tests required subjects to perform a treadmill graded exercise test,a countermovement jump test for peak power measurement,and a 10-km time trial.Training included 12 sessions of either intermittent sprint or plyometric training carried out twice per week.On completion of the intervention,post-tests were conducted.Results:Both groups showed significant reduction in weekly training mileage from pre-intervention during the intervention period.There were significant improvements in the 10-km time trial performance and peak power.There was also significant improvement in relative peak power for both groups.The 10-km time trial performance and relative peak power showed a moderate inverse correlation.Conclusion:These findings showed that both intermittent sprint and plyometric training resulted in improved 10-km running performance despite reduction in training mileage.The improvement in running performance was accompanied by an improvement in peak power and showed an inverse relationship with relative peak power.
文摘目的:观察踝关节牵伸训练对脑卒中患者下肢功能的疗效并讨论其机制。方法:25例脑卒中患者随机分为12例跟腱牵伸组(试验组)和13例直腿抬高组(对照组),两组均采用多关节下肢康复机器人系统LR2进行为期2周训练,共12次,每次45min。训练前后采用等速测试系统进行实验室评定踝关节被动峰力矩、踝关节主动峰力矩、踝关节主动、被动活动范围(passive range of motion,PROM)、力矩-角速度斜率(SLOPE);临床评定改良Ashworth量表(modified Ashworth scale,MAS)、临床痉挛指数(clinical spasticity index,CSI)。结果:训练前两组患者的一般资料、实验室及临床各项评定结果无显著性差异(P>0.05)。训练2周后,两组间踝关节被动峰力矩在角速度10°/s、60°/s、120°/s、180°/s差异有显著性意义(P<0.05),240°/s时无显著性差异(P>0.05);踝关节主动峰力矩在角速度60°/s两组间差异有显著性意义(P<0.05),120°/s、180°/s无显著性差异(P>0.05),SLOPE训练后两组间有显著性差异(P<0.05);试验组AROM、PROM、MAS、CSI改善情况明显优于对照组,差异有显著性意义(P<0.05)。结论:踝关节牵伸训练有效降低脑卒中患者痉挛,改善关节活动度,提高肌肉力量,是一种较为有效的治疗手段。
