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MUSCLE LENGTHENING
❖Actin and Myosin slide into lengthened position:
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练习原则
❖ 确实感受到拉长了肌肉, 但不引起明显疼痛。
❖ 当主动肌无力与拮抗肌 紧张同时存在时,先牵 张紧张的拮抗肌,再增 强主缩肌力量。
❖Applying the FITT principle
▪ Frequency:how often to stretch ▪ Intensity:how far to stretch ▪ Time:how long to stretch ▪ Type:which stretching exercises to perform
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DURATION and REPITITIONS
❖ HEALTHY OLDER ADULTS: Comparing 15, 30, and 60 sec. stretch: 60 sec. stretch greatest and longest-lasting improvement ❖ HEALTHY YOUNG ADULTS:
❖After tension decreases, increase stretch further ❖Breathe and relax as stretch is performed
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Time (Duration) of Exercise
❖Hold each stretch for 10~30 seconds ❖Do at least 4 repetitions of each exercise ❖Rest for 30~60 seconds between stretches