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首页> 外文期刊>Journal of human kinetics >Morphometric Study for Estimation and Validation of Trunk Transverse Surface Area To Assess Human Drag Force on Water
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Morphometric Study for Estimation and Validation of Trunk Transverse Surface Area To Assess Human Drag Force on Water

机译：形态学研究评估和验证躯干横向表面积以评估人在水上的阻力

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The aim of this study was to compute and validate estimation equations for the trunk transverse surface area (TTSA) to be used in assessing the swimmer's drag force in both genders. One group of 133 swimmers (56 females, 77 males) was used to compute the estimation equations and another group of 131 swimmers (56 females, 75 males) was used for its validations. Swimmers were photographed in the transverse plane from above, on land, in the upright and hydrodynamic position. The TTSA was measured from the swimmer's photo with specific software. Also measured was the height, body mass, biacromial diameter, chest sagital diameter (CSD) and the chest perimeter (CP). With the first group of swimmers, it was computed the TTSA estimation equations based on stepwise multiple regression models from the selected anthropometrical variables. For males TTSA=6.662 CP+17.019 CSD-210.708 (R~2=0.32; R_a~2=0.30; P0.01) and for females TTSA=7.002 CP+15.382 CSD-255.70 (R~2=0.34; R_a~2=0.31; P<0.01). For both genders there were no significant differences between assessed and estimated mean TTSA. Coefficients of determination for the linear regression models between assessed and estimated TTSA were R~2-0.39 for males and R~2=0.55 for females. More than 80% of the plots were within the 95% interval confidence for the Bland-Altman analysis in both genders.
机译：这项研究的目的是计算和验证躯干横向表面积（TTSA）的估计方程式，用于评估男女游泳者的拖曳力。一组133名游泳运动员（56名女性，77名男性）用于计算估计方程，另一组131名游泳运动员（56名女性，75名男性）用于其验证。从上方，陆地，直立和水动力位置的横面上拍摄游泳者的照片。 TTSA是使用特定软件从游泳者的照片中测得的。还测量了身高，体重，双肩峰直径，胸部矢状径（CSD）和胸部周长（CP）。对于第一组游泳者，它是从选定的人体测量变量中基于逐步多元回归模型计算出TTSA估计方程式的。对于男性TTSA = 6.662 CP + 17.019 CSD-210.708（R〜2 = 0.32; R_a〜2 = 0.30; P0.01），对于女性TTSA = 7.002 CP + 15.382 CSD-255.70（R〜2 = 0.34; R_a〜2 = 0.31; P <0.01）。对于这两种性别，评估和估计的平均TTSA之间均无显着差异。评估和估计的TTSA之间线性回归模型的确定系数，男性为R〜2-0.39，女性为R〜2 = 0.55。两种性别的Bland-Altman分析中，超过80％的地块在95％区间置信度内。

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