Effects of strength training on cardiovascular responses during a submaximal walk and a weight-loaded walking test in older females.
Effects of strength training on cardiovascular responses during a submaximal walk and a weight-loaded walking test in older females.
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DOI：
10.1097/00008483-199601000-00007
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发表时间：
1996-01-01
期刊：
影响因子：
--
通讯作者：
White, M
中科院分区：
文献类型：
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作者：
Parker, N D;Hunter, G R;White, M
目得：本研究的目的是检查全身力量训练计划对60-77岁健康女性在次极量步行和负重步行试验中的摄氧量（VO 2）、心率（HR）、收缩压（SBP）和心率-血压乘积（RPP）的影响。次极量步行（2 mph和3.5%等级）发生在分级运动试验的第3阶段。负重行走任务包括以每小时2英里的速度在跑步机上行走，同时携带一个重量为最大等长肘关节屈曲强度40%的箱子。妇女的力量训练每周三次，约1小时，每届会议为16 weeks.RESULTS：配对t检验确定，强度增加了57%，6个等张强度测试（一个重复最大值）和29%，两个等长强度测试。使用重复测量方差分析（ANOVA）确定两次试验之间和试验内的前后差异（α = 0.05）。在次极量步行和负重步行试验中，VO 2无变化，但HR、SBP和RPP显著降低。平均HR（135 - 120 bpm）和RPP在负重行走试验中，（23.3 x 10（3）至19.3 x 10（3））的下降幅度大于次极量行走（HR：108 - 104 bpm; RPP 18.3 x 10（3）-17.0 x 10（3））。结论：总之，降低HR，SBP和RPP表明，力量训练可以减少健康老年女性在日常工作中的心血管压力。
PURPOSE: The purpose of this study was to examine the effects of a total body strength training program on oxygen uptake (VO2), heart rate (HR), systolic blood pressure (SBP), and rate pressure product (RPP) during a submaximal walk and a weight-loaded walking test in healthy women 60-77 years old.METHODS: The submaximal walk (2 mph and 3.5% grade) took place during stage 3 of a graded exercise test. The weight-loaded walking task consisted of treadmill walking at 2 mph while carrying a box weighing 40% of maximum isometric elbow flexion strength. The women strength trained three times per week for approximately 1 hour per session for 16 weeks.RESULTS: Paired t tests determined that strength increased by 57% on six isotonic strength tests (one repetition maximum) and by 29% on two isometric strength tests. A repeated measures analysis of variance (ANOVA) was used to determine the pre- to post-differences between and within the two tests (alpha = 0.05). There was no change in VO2 but HR, SBP, and RPP decreased significantly during the submaximal walk and the weight-loaded walking test. However, average HR (135 to 120 bpm) and RPP (23.3 x 10(3) to 19.3 x 10(3)) decreased more during the weight-loaded walking test than during the submaximal walk (HR: 108 to 104 bpm; RPP 18.3 x 10(3) to 17.0 x 10(3)).CONCLUSIONS: In conclusion, the reduced HR, SBP, and RPP indicates that strength training may reduce cardiovascular stress during daily tasks in healthy older women.