Maximal oxygen uptake is associated with dimensions in left ventricle and aorta

Takahashi, K; Miyachi, Motohiko; Fujimoto, K; Takamoto, Takehiko; Yamazaki, Ken; Matsueda, Shuji; Yamamoto, Kenta; Yuzuki, Osamu

doi:10.5432/jjpehss.kj00003390886

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“…Osborne et al (1992) noted that the LVIDD was correlated with _ VO 2max ðR 2 ¼ 0:71; P\0:001Þ; but not the LVIDS. The observations of Takahashi et al (2003) support these results. Osborne et al (1992) explained these findings by noting that endurance training involves high-intensity exercise bouts in which left ventricular cardiac output and SV are increased for up to several hours per day.…”

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confidence: 91%

Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

et al. 2006

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The present study developed nonexercise models for predicting maximal oxygen uptake (VO2max) using skeletal muscle (SM) mass and cardiac dimensions and to investigate the validity of these equations in healthy Japanese young men. Sixty healthy Japanese men were randomly separated into two groups: 40 in the development group and 20 in the validation group. VO2max during treadmill running was measured using an automated breath-by-breath mass spectrometry system. Left ventricular internal dimensions at end-diastole (LVIDD) and at end-systole (LVIDS) were measured using M-mode ultrasound with a 2.5 MHz transducer. Stroke volume (SV) was calculated based on the Pombo rule. SM mass was predicted by B-mode ultrasound muscle thickness. Correlations were observed between VO2max and predicted thigh (r = 0.74, P < 0.001) and lower leg SM mass (r = 0.55, P < 0.001). Furthermore, there were correlations between VO2max and LVIDD (r = 0.74, P < 0.001) and SV (r = 0.72, P < 0.001). Stepwise regression analysis was applied to thigh SM mass and SV for prediction of VO2max in the development group, and these parameters were closely correlated with absolute measured VO2max (R2 = 0.72, P < 0.001) by multiple regression analysis. When the VO2max prediction equations were applied to the validation group, significant correlations were also observed between the measured and predicted VO2max (R2 = 0.83, P < 0.001). These results suggested that nonexercise prediction of VO2max using thigh SM mass and cardiac dimension is a valid method to predict VO2max in young Japanese adults.

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Section: Discussionsupporting

confidence: 91%

Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

et al. 2006

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Maximal oxygen uptake is associated with dimensions in left ventricle and aorta

Abstract: Endurance 一七 rained athletes with higher aerobic power ( Vb2max)have a large − sized left venthcle (

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Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

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Maximal oxygen uptake is associated with dimensions in left ventricle and aorta

Abstract: Endurance 一 七 rained athletes with higher aerobic power ( Vb2max)have a large − sized left venthcle (

Cited by 1 publication

References 0 publications

Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

Development of nonexercise prediction models of maximal oxygen uptake in healthy Japanese young men

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Abstract: Endurance 一七 rained athletes with higher aerobic power ( Vb2max)have a large − sized left venthcle (