BENEFITS OF A CONVENIENT, SELF-REGULATED 6-MONTH WALKING PROGRAM IN SEDENTARY, MIDDLE-AGED WOMEN

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概要

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• The purpose of this study was to determine the influence of a 6-month unsupervised, flexible and fairly light intensity walking program on endurance fitness, strength, lipids and lipoproteins and bone health in a group of middle-aged sedentary women. Six pre-menopausal and 8 post-menopausal women, aged 54 yr, served as the walk training group(W) and 9 women(2 post-menopausal), aged 49 yr, served as controls(C). W walked an average of 10,000 steps per day for 6 months, which included an average of 5,000 steps of brisk walking for 30 min, 4 to 5 days per week. Workloads, heart rates and double-product break point(during incremental maximal ergometer exercise), body weight and %fat, serum lipids, leg strength and bone density(by ultrasound)and induces of bone metabolism were measured at baseline and after 3 and 6 months. Walk training in W resulted in a significant improvement in maximal workload during the exercise test compared with C. Double product break point in W during exercise significantly shifted towards higher workloads and resting heart rate was reduced. Isokinetic muscular strength of leg extensors and abdominal muscular endurance measured by sit-ups were also significantly increased in W. Estimated calcaneal bone density showed a tendency to increase after 6 months of training in W. Indicators of bone resorption and growth remained unchanged. Changes in serum lipids and lipoproteins were also favorable, but not significant. In conclusion, these results show that a flexible and self-regulated walking program is sufficient to elicit improvements in cardiovascular endurance, aerobic capacity measured by DPBP and strength of leg and abdominal muscles. Bone strength and serum lipids were not clearly improved after 6 months with this walking program. If training time were extended to 12 months, significant improvements in these measures can be expected because tendencies toward improvements were observed.

• 2001-06-01

著者

• Kobayashi Yasutaka

  The Laboratory For Health And Human Performance School Of Arts And Sciences Chukyo University

• KOBAYASHI YOSHIO

  中京大学教養部健康スポーツ科学

• HOSOI TERUO

  中京大学教養部健康スポーツ科学

• TAKEUCHI TOSHIKO

  中京大学教養部健康スポーツ科学

• AOKI SHIGERU

  日本エアロビクスセンター

• Hosoi Teruo

  The Laboratory For Health And Human Performance School Of Arts And Sciences Chukyo University

• Takeuchi Toshiko

  The Laboratory For Health And Human Performance School Of Arts And Sciences Chukyo University

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