The purpose of this study was to examine the relationship between field-based simplified approaches and knee extensor muscle strength/size in young men. Knee extensor muscle thickness （MT） of 104 healthy university ...The purpose of this study was to examine the relationship between field-based simplified approaches and knee extensor muscle strength/size in young men. Knee extensor muscle thickness （MT） of 104 healthy university freshmen was measured at the anterior half of thigh length; maximal voluntary isometric contraction （MVIC） was measured when subjects performed knee extension. Field-based simplified approaches [sit-to-stand, standing long jump （SLJ）, handgrip and upper-leg-50% （thigh） girth] were also measured. MVIC was correlated with SLJ （r = 0.361, P 〈 0.001）, handgrip （r = 0.523, P 〈 0.001） and thigh girth （r = 0.401, P 〈 0.001）, but not with the sit-to-stand test （r = 0.126, P 〉 0.05）. MT was correlated with handgrip （r = 0.317, P 〈 0.001） and thigh girth （r = 0.632, P 〈 0.001）, but not with SLJ （r = 0.038, P 〉 0.05） or the sit-to-stand test （r = 0.145, P 〉 0.05）. A stepwise multiple-regression analysis was applied to the predictor thigh girth to predict knee extensor MT （R2 = 0.399）. To predict knee extensor MVIC, the predictor handgrip, thigh girth and SLJ were applied （R2 = 0.381）. In conclusion, knee extensor muscle strength/size could be evaluated by the field-based simplified approaches, in particular by the thigh girth measurement, which may be major determinant to maintain activities of daily living for healthy young men. However, the 4 field-based simplified approaches appear to be still not of high impact.展开更多
The purpose of this study was of two-fold： firstly to estimate the handgfip strength oflndian inter-university handball players and, secondly to search the correlations of it with selected anthropometric variables an...The purpose of this study was of two-fold： firstly to estimate the handgfip strength oflndian inter-university handball players and, secondly to search the correlations of it with selected anthropometric variables and flexibility measure. To serve this purpose, a total of eight anthropometric variables, such as height, weight, body mass index, upper arm length, forearm length, total arm length, hand length and hand breadth, flexibility measure such as, sit and reach test, and right and left handgrip strength were measured on purposely selected 150 Indian inter-university handball players aged 18-25 years collected from the inter-university competition held in Guru Nanak Dev University, Amritsar, India during September, 2013. An adequate number of controls （n = 102） were also taken from the same place for comparisons. The results showed statistically significant between-group differences （P 〈 0.006-0.001） among the male and female handball players and controls in all the variables studied. Statistically significant positive correlations （P _〈 0.023-0.001） of both right and left handgrip strength were found with all the variables studied, except BMI, in Indian inter-university handball players. In conclusion, it may be stated that handgrip strength may be used as one of the indicating factors for physical strength as well as the flexibility measure of the handball players.展开更多
文摘The purpose of this study was to examine the relationship between field-based simplified approaches and knee extensor muscle strength/size in young men. Knee extensor muscle thickness （MT） of 104 healthy university freshmen was measured at the anterior half of thigh length; maximal voluntary isometric contraction （MVIC） was measured when subjects performed knee extension. Field-based simplified approaches [sit-to-stand, standing long jump （SLJ）, handgrip and upper-leg-50% （thigh） girth] were also measured. MVIC was correlated with SLJ （r = 0.361, P 〈 0.001）, handgrip （r = 0.523, P 〈 0.001） and thigh girth （r = 0.401, P 〈 0.001）, but not with the sit-to-stand test （r = 0.126, P 〉 0.05）. MT was correlated with handgrip （r = 0.317, P 〈 0.001） and thigh girth （r = 0.632, P 〈 0.001）, but not with SLJ （r = 0.038, P 〉 0.05） or the sit-to-stand test （r = 0.145, P 〉 0.05）. A stepwise multiple-regression analysis was applied to the predictor thigh girth to predict knee extensor MT （R2 = 0.399）. To predict knee extensor MVIC, the predictor handgrip, thigh girth and SLJ were applied （R2 = 0.381）. In conclusion, knee extensor muscle strength/size could be evaluated by the field-based simplified approaches, in particular by the thigh girth measurement, which may be major determinant to maintain activities of daily living for healthy young men. However, the 4 field-based simplified approaches appear to be still not of high impact.
文摘The purpose of this study was of two-fold： firstly to estimate the handgfip strength oflndian inter-university handball players and, secondly to search the correlations of it with selected anthropometric variables and flexibility measure. To serve this purpose, a total of eight anthropometric variables, such as height, weight, body mass index, upper arm length, forearm length, total arm length, hand length and hand breadth, flexibility measure such as, sit and reach test, and right and left handgrip strength were measured on purposely selected 150 Indian inter-university handball players aged 18-25 years collected from the inter-university competition held in Guru Nanak Dev University, Amritsar, India during September, 2013. An adequate number of controls （n = 102） were also taken from the same place for comparisons. The results showed statistically significant between-group differences （P 〈 0.006-0.001） among the male and female handball players and controls in all the variables studied. Statistically significant positive correlations （P _〈 0.023-0.001） of both right and left handgrip strength were found with all the variables studied, except BMI, in Indian inter-university handball players. In conclusion, it may be stated that handgrip strength may be used as one of the indicating factors for physical strength as well as the flexibility measure of the handball players.
