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KMID : 1023920090110030021
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Journal of the Korean Academy of Kinesiology
2009 Volume.11 No. 3 p.21 ~ p.30
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Estimation of 1-RM on Leg Extension and Leg Curl from Submaximal Strength and Anthropometric Variables for Adult Male
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Lee Byung-Kun
Lee Dong-Kyu
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Abstract
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INTRODUCTION: The purpose of this study was to develop 1-RM prediction equation of leg ex-tension and leg curl from 7-10RM and anthropometric variables, and to verify the equation by the verify group.
METHOD: Trained adult males of development group and verification group measured 1-RM, 7-10RM and anthropometric varia-bles(development 46, verification 17). As a results of regression analysis, the 7-10RM equation of LE was “4.275 + 1.255? 7-10RM(kg)”(p<.01) and the equation of anthropometric variables was “y = -4.411 ? weight(kg)”(p<.05). The 7-10RM equation of LC was “y = 29.946 + 0.821 ? 7-10RM(kg)”(p<.01), the equation of anthropometric variables was “y = - 48.838 + 2.428 ? thigh girth(cm)”(p<.01).
RESULT: There were no significant differences and high correlations(0.98~0.99, p<.01) between measured 1-RM and estimated 1-RM from 7-10RM, both in LE and LC. However, in the case of estimation from anthro-pometric variables, there was no significant difference only in LC, and low correlation(0.11~0.39, p>.05) was shown between measured 1-RM and estimated 1-RM. The 7-10RM equation had a good validity, but the equation of anthropometric variables had a limitation.
CONCLUSION: The satisfied 1-RM equation in both LE and LC were made from 7-10RM, but not from anthropometric variables for trained adult males.
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KEYWORD
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1-RM, lat extension, leg curl, 7-10RM, anthropometry, estimation
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