運動負荷心電図の非特異的なST-T変化と推定最大酸素摂取量との関連について

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タイトル別名
  • Relationship between Nonspecific ST-T Changes in Exercise ECG and Predicted Maximal Oxygen Intake in Japanese Females
  • ―健常女性についての検討―

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説明

This study was designed to clarify the relationship between aerobic power level, nonspecific ST-T changes in exercise ECG and coronary heart disease (CHD) risk factors in Japanese females.<br>Oxygen intake per kilogram of body weight (VO2max/wt), nonspecific ST-T change in exercise ECG (horizontal and sagging depression ≥1mm) and CHD risk factors were examined in 317 middleaged healthy females.<br>The findings were as follows:<br>1) The mean value of VO2max/wt in the nonspecific ST-T changes in exercise ECG group (ST group) was significantly lower than that found in the normal ECG group (N group) (p<0.05). However, the higher the mean values of the risk factors (SBP, TC, LDL-c, TC/HDL-c) in the ST group after adjusting for the effects of age and percent body fat (% fat) (all p<0.01). There were no significant differences between the ST group and the N group in the mean values of DBP, HDL-c, and TG.<br>2) Significant correlations were observed between VO2max/wt and CHD risk factors (each p<0.0001 except for TG<0.001).<br>From these results, it was concluded that VO2max/wt may be closely related to CHD risk factors and nonspecific ST-T changes in exercise ECG. Also these results suggest that it may be necessary to maintain the VO2max/wt to a high level for coronary heart disease prevention.

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