|Budget Amount *help
¥2,200,000 (Direct Cost : ¥2,200,000)
Fiscal Year 1998 : ¥600,000 (Direct Cost : ¥600,000)
Fiscal Year 1997 : ¥500,000 (Direct Cost : ¥500,000)
Fiscal Year 1996 : ¥1,100,000 (Direct Cost : ¥1,100,000)
A study was conducted to investigate the effects of habitual exercise on risk factors of chronic non- communicable diseases and thermoregulatory ability in middle age. Three different approaches were adopted for this purpose.
1. The subjects were divided into two groups ; a habitual exercise group of 75 women, and a control group of 301 women. The serum total cholesterol (TC) and triglyceride (TG) levels were found to be significantly lower in the habitual exercise group than in the control group. Body temperature was lower and the body weight loss rate was higher in the habitual exercises than in the control group during walking exercise in a hot environment.
2. The subjects were 214 middle-aged women who participated in the 100 days-walking program ( more than 50%HRmax, longer than 20 minutes walk, more than 3 days a week). Following this walking, %fat, TC, TG, and Al decreased significantly, but HDL-cholesterol did not change significantly even after 100 days. Grip strength, standing trunk flexion, and closed-eyes foot- balance increased, while jumping reaction time and heart rate under submaximal exercise decreased significantly as a result of walking exercise.
3. The subjects were 415 women who aged 35-59 years. We measured the stiffness index (ST), speed of sound (SOS), and broadband ultrasound attenuation (BUA) by ultrasonometer. The ST, SOS, and BUA decreased with age. The ST, SOS, and BUA were significantly higher in the exercise experienced group than in the exercise non-experience of group, but they were not found between in exercise at present group and in the non-exercise at present group. Correlationship between ST and grip strength, closed-eye foot- balance, and jumping reaction time can be found.
In conclusion, these results suggest that long-term low-intensity exercise can improve both the serum lipid profile and physical fitness.