AMOUNT AND INTENSITY OF PHYSICAL ACTIVITY IN RELATION TO CARDIORESPIRATORY FITNESS IN JAPANESE MIDDLE-AGED AND ELDERLY MEN
- VernacularTitle:中高年男性における心肺体力と身体活動の量およびその強度との関係
- Author:
TOMOKO AOYAMA
;
MEIKO ASAKA
;
KAORI KANEKO
;
TOSHIMICHI ISHIJIMA
;
HIROSHI KAWANO
;
SIZUO SAKAMOTO
;
IZUMI TABATA
;
MITSURU HIGUCHI
- Publication Type:Journal Article
- Keywords:
cardiorespiratory fitness;
physical activity;
accelerometer;
middle-aged and elderly men
- From:Japanese Journal of Physical Fitness and Sports Medicine
2010;59(2):191-198
- CountryJapan
- Language:Japanese
-
Abstract:
PORPOSE: This study aimed to investigate the relation between cardiorespiratory fitness(CRF) and physical activity, especially vigorous physical activity, in Japanese middle-aged and elderly men.METHODS: Eighty-five men aged 30-69 years participated in this study. CRF was assessed by measuring the maximal oxygen uptake based on weight (VO2max/wt) in an incremental test on a bicycle ergometer. METs·h/week was measured as the parameter of physical activity by using accelerometers. We defined the amount of physical activity higher than 3 METs as “Physical activity ; PA”in this study. Then, PA was divided into “Moderate physical activity ; MPA”(higher than 3 METs and below 6 METs)and “Vigorous physical activity ; VPA”(higher than 6 METs).RESULTS : CRF was positively correlated with PA(r=0.318, P<0.01), MPA(r=0.230, P<0.05), and VPA(r=0.301, P<0.01) and negatively correlated with age(r=-0.607, P<0.001), BMI(r=-0.369, P<0.01), and waist circumference(WC)(r=-0.486, P<0.001). After adjusting for age and WC, the multiple regression analysis revealed that PA was positively correlated with CRF(P<0.01). VPA was positively correlated with CRF(P<0.05) after adjusting for age, WC, and MPA. MPA was not correlated with CRF in the case of adjusting for age and WC.CONCLUSION : This study suggested that physical activity higher than 3 METs was positively associated with cardiorespiratory fitness independently of age and waist circumference, and particularly vigorous physical activity may contribute to increased cardiorespiratory fitness in middle-aged and elderly men. Thus physically active life with maintenance of adequate waist circumference may help to prevent age-related decline in cardiorespiratory fitness.
