Effect of resistance training on the enhancement of the vital function of older adults living in snowy regions

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Other Title
  • 高齢者の除雪能力に対する筋力トレーニングの効果
  • コウレイシャ ノ ジョセツ ノウリョク ニ タイスル キンリョク トレーニング ノ コウカ
  • ja
  • ja
  • ja

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Abstract

The objectives of this study were to elucidate the effects of machine resistance training on vital function required to snow shoveling. Eighteen non-institutionalized older men (RTR, mean age 66.2 years) participated in machine resistance training including leg curl, leg extension, abdominal crunch, back extension and lat pull down 2 day/wk for 15 wks. Fourteen older men (mean 68.1 years) volunteered to be control subjects (CON) who did not perform any regular exercise during the same period of RT. All of the subjects were engaging in habitual snow shoveling during winter. Outcome measures included grip strength, six-minutes walk distance, leg extension power and shoveling throw ability test and 1-RM strength tests of resistance exercises. Shoveling throw ability test was evaluated by throw distance at 5 kg sand bag using a snow shovel. Six-minutes walk distance (+10%, p<0.01), leg extension power (+15.%, p<0.01), shoveling throw ability test (18%, p<0.01) and performance in 1-RM strength tests including leg curl (34%,p<0.01), leg extension (31%, p<0.01), abdominal crunch (22%, p<0.01), back extension (44%,p<0.01), lat pull down (28%, p<0.01) improved significantly in the RTR, while no significant difference was observed in CON before and after training period. Results from the overall multiple regression analysis of all subjects to assess the contribution of predictor variables as gain in one repetition maximum (increasing rate) in resistance exercise for dependent variable (increasing rate in shovel power) suggest that back extension was the best predictor as high contribution to explain gain of the shoveling throw ability. It was suggested that machine resistance training is effective to enhance vital function required to snow shoveling for older men.

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