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标题：The Investigation of Mid-term Effect of Different Intensity of PNF Stretching on Improve Hamstring Flexibility
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作者：Behroz Khodayari ; Behroz Khodayari ; Yaghoob Dehghani 等
期刊名称：Procedia - Social and Behavioral Sciences
印刷版ISSN：1877-0428
出版年度：2012
卷号：46
页码：5741-5744
DOI：10.1016/j.sbspro.2012.06.508
语种：English
出版社：Elsevier
摘要：AbstractIntroduction: the aim of this study was investigated of mid-term effect of different intensity of PNF stretching on improve hamstring flexibility.Methodology: seventy five male students with age 18-26 years were selected randomly and divided in five groups: first group was as control, second, third, fourth and fifth groups exerted maximal voluntary of muscle isometric contraction sequently at 20, 40, 60 and 80 percentages. Experimental groups take a part in CR PNF training for 5 days. Results: research findings showed that there are significant differences between experimental groups in compare with control group after CR PNF training, but there are no significant differences between experimental groups in range of flexibility. Discussion and Conclusion: use of sub-maximal CR PNF training on Hamstring led to more flexibility, also when muscles stretched in this range will be decreased muscles damages probability.
关键词：PNF Stretch training;Flexibility;Hamstring