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B-38 Free Communication/Poster - Resistance Training in Older Adults JUNE 2, 2010 1: 00 PM - 6: 00 PM ROOM: Hall C

Effects of Combined Low-Intensity Resistance Exercise and Cardiovascular Exercise on Physical Fitness in Older Adults

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Board #264 June 2 2:00 PM - 3:30 PM

Hiruma, Eisuke1; Ono, Kyoko1; Kamiya, Masaaki1; Takao, Masato1; Katamoto, Shizuo2

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Medicine & Science in Sports & Exercise: May 2010 - Volume 42 - Issue 5 - p 413
doi: 10.1249/01.MSS.0000384784.94943.78
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PURPOSE: To identify the effects of aerobic exercise and resistance exercise with low-intensity on physical fitness and muscular strength with 2 days per week for 8 weeks in old adults.

METHODS: Nine males (69.3 ±8.8yrs) and ten females (62.6±5.3yrs) who did not exercise regularly participated in this study. The exercise in this study was consisted of 15 min of warm-up, 15 min of aerobic exercise with bicycle ergometer, 35 min of resistance exercise, and 15 min of cooling down. Primary outcome measures included anthropometric characteristics, submaximal aerobic fitness test with YMCA cycle ergometry protocol, physical fitness test (grip strength, sit-ups, sit and reach, 6 minutes of walking, one-leg balance test with opened eyes and timed up and go test(Up&go test), estimating one repetition maximum(RM) of 6 separate exercises, and multiple analysis blood profiles. This study examined flexed knee and elbow joint angle, scale of perceived pain during resting and walking, and muscle strengths to indentify DOMS.

RESULTS: The blood pressures both groups were significantly decreased after 16 regimens of exercise (p<0.05-0.01). Both groups in this study did not change cardiovascular fitness and multiple analysis blood profiles. The male group significantly changed the sit-ups (p<0.01), the sit and reach test (p<0.05), the 6 min of walking(p<0.01), and the Up&go test (p<0.01). The female groups, also, significantly increased all measurements of physical fitness test and the Up&go test (p<0.05-0.001). Both groups experienced a significant increase in estimated 1RM of 6 exercises after the 8 weeks of the slow and low-intensity resistance exercises(p<0.05-0.001). The strengths of lower extremities both groups increased more than those of upper extremities. The subjects did not change the joint angles, pain scales, and strengths during this training.

CONCLUSIONS: The present study showed that 1) the low-intensity resistance exercise program with slow movement in older adults was effective in increasing strength after the 8-week training period with 2 times per week and 2) the combined resistance exercise and aerobic exercise training program for 8 weeks was effective in increasing physical fitness, and 3) this slow movement resistance program with the low intensity did not induce DOMS.

© 2010 American College of Sports Medicine