心肺予備能の指標としての運動時心拍数増加曲線勾配の提案

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A study was conducted to clarify the validity and availability of inclination of exponential curve-fitting model for oxygen uptake (VO_2) and heart rate (HR) during incremental exercise (IECOH) as an index of cardio-pulmonary functional reserve in healthy subjects. A treadmill exercise test was used to measure the V0_2(L/kg/min) and HR (beat/min) during incremental exercise of all subjects The IECOH was derived from the following equation HR = A・exp^<n vo_2>. The constant "B" represents the IECOH. The following three identifications were made 1) the relationship between maximal oxygen uptake (VO_2max) and IECOH in 82 healthy males, 2) the relationship between IECOH and age in 428 healthy males and females, 3) the effect of physical training in 8 healthy males. There was inverse correlation between IECOH and V0_2max(r=-0.824). And also, there were inverse correlations between IECOH detected from submaximal tests and V0_2max (above r=-0.6). There were no differences in the IECOH detected from maximal and submaximal tests In Bland-Altman plot method, accuracy of measurment in the IECOH detected from submaximal exercise test was precise There was a significant relationship between IECOH and age in male and female subjects (r=0.499 and r=0.310, respectively) Physical training increased V0_2max and decreased IECOH significantly The V0_2max before and after physical training correlated inversely with the IECOH before and after physical training (r=-0.514) In conclusion, these results suggest that IECOH is adequate and useful as an index of cardiopulmonary functional reserve which can be measured by the submaximal exercise test in healthy subjects (Jpn J Phys. Fitness Sports Med 2003, 52 : 575〜584)
日本体力医学会の論文
2003-10-01

心肺予備能の指標としての運動時心拍数増加曲線勾配の提案

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