Target intensity and interval walking training in water to enhance physical fitness in middle-aged and older women: a randomised controlled study.
Target intensity and interval walking training in water to enhance physical fitness in middle-aged and older women: a randomised controlled study.
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水中目标强度和间歇步行训练可增强中老年女性的身体素质：一项随机对照研究。
DOI：
10.1007/s00421-015-3267-9
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Nose H.
中科院分区：
文献类型：
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作者：
Handa S;Masuki S;Ohshio T;Kamijo Y;Takamata A;Nose H.
为确定中老年人水中间歇步行训练（IWT）的目标强度，以增强体质，将31名女性[59±5（SD）岁]随机分为两组，分别在陆地（LG，N= 15）和水中（WG，N= 16）进行IWT。要求所有受试者每天进行≥6组快速和慢速步行，每组3分钟，每周-1天≥4天，持续8周，强度比气体交换阈值（O2 GET）时的耗氧率高35%，每种条件下快速步行期间的主观感觉为博格量表16-18分。在IWT之前和之后，我们测量了O2 GET，峰值有氧能力（O2 peak）通过分级步行和骑自行车测试在陆地上和等长膝关节伸展（FEXT）和屈曲（FFLX）forces.ResultsBefore IWT，theO 2GET在水中行走是14%，心率（HR）在给定的O2是~10 beats min-1低于（P=0.001）比在陆地上。在IWT期间，两组受试者均进行了约4天的IWT（P> 0.9），WG组的快速行走强度比LG组高14%（P< 0.05）。结论在一定的运动强度下，水中步行可提高中老年女性的O2-GET，降低心率，使其在较高的代谢率下进行运动，改善主观感受，从而使这些受试者的身体素质得到更大的提高。
PurposeTo determine the target intensity for fast walking during interval walking training (IWT) in water for middle-aged and older people to enhance physical fitness.MethodsThirty-one women [59±5 (SD) years old] were randomly divided into two groups: IWT on land (LG,N= 15) and in water (WG,N= 16). All subjects were instructed to perform ≥6 sets of fast and slow walking for 3 min each in a day, ≥4 days week−1, for 8 weeks, at an intensity 35 % higher than the oxygen consumption rate at the gas exchange threshold (O2GET), with a subjective feeling of 16–18 points of the Borg scale during fast walking in each condition. Before and after IWT, we measuredO2GET, peak aerobic capacity (O2peak) by graded walking and cycling tests on land and isometric knee extension (FEXT) and flexion (FFLX) forces.ResultsBefore IWT, theO2GETfor walking in water was 14 % higher and the heart rate (HR) at a givenO2was ~10 beats min−1lower (P=0.001) than on land. During IWT, subjects in both groups performed IWT for ~4 days week−1(P> 0.9) with a 14 % higher fast walking intensity in WG than in LG (P< 0.05). After IWT, theO2peakandO2GETfor cycling,FEXTandFFLXincreased more in WG than in LG (all,P< 0.05).ConclusionWalking in water elevatedO2GETand decreased HR at a given exercise intensity in middle-aged and older women, which enabled them to perform exercise at a higher metabolic rate than on land due to improved subjective feelings, which, for these subjects, resulted in greater gains in physical fitness.