School of Health and Sport Sciences, Faculty of Science, Health & Education, University of the Sunshine Coast, Queensland 4556, Australia.
J Sci Med Sport. 2011 May;14(3):254-8. doi: 10.1016/j.jsams.2010.12.005. Epub 2011 Jan 8.
Strength testing is commonly used to determine the muscular strength of older individuals participating in a resistance training program. The purpose of this study was to non-invasively examine and compare the blood pressure (BP) and heart rate (HR) response of maximum and sub-maximum strength tests in older men. Twenty-four healthy men aged 70-80 yr were recruited for the study. Participants completed a 1 repetition maximum (RM) strength test and four days later a sub-maximum strength test on an incline squat. Systolic blood pressure (SBP), diastolic blood pressure (DBP) and HR were measured by plethysmography during and immediately after the strength tests. SBP, DBP and HR were (P<0.001) higher during the 1RM and sub-maximum strength tests compared to resting values. Twenty seconds post 1RM, SBP and HR were higher than resting values. Twenty seconds post sub-maximum strength testing SBP and DBP were lower (P<0.02) and HR (P<0.001) was higher than resting values. SBP, DBP and HR were higher (P<0.001) during sub-maximum strength testing compared to 1RM testing. Twenty seconds post testing, SBP and DBP were lower (P<0.001) and HR was higher (P<0.001) for the sub-maximum strength tests compared to the 1RM. The results of our study demonstrate that sub-maximum strength testing resulted in greater changes in BP and HR compared to 1RM strength testing. The lower cardiovascular stress experienced during the 1RM shows that this may be a safer method of testing compared to sub-maximum strength testing in men aged 70-80 yr.
力量测试常用于评估参与抗阻训练计划的老年人的肌肉力量。本研究旨在非侵入性地检测和比较 70-80 岁男性最大和次最大力量测试的血压（BP）和心率（HR）反应。本研究招募了 24 名健康的 70-80 岁男性。参与者完成了 1 次重复最大力量（1RM）测试，四天后在倾斜蹲台上进行了次最大力量测试。在力量测试期间和之后立即通过体积描记法测量收缩压（SBP）、舒张压（DBP）和 HR。与静息值相比，1RM 和次最大力量测试时 SBP、DBP 和 HR 更高（P<0.001）。1RM 后 20 秒，SBP 和 HR 高于静息值。次最大力量测试后 20 秒，SBP 和 DBP 较低（P<0.02），HR 较高（P<0.001），高于静息值。与 1RM 测试相比，次最大力量测试时 SBP、DBP 和 HR 更高（P<0.001）。测试后 20 秒，次最大力量测试时 SBP 和 DBP 较低（P<0.001），HR 较高（P<0.001）。本研究结果表明，与 1RM 力量测试相比，次最大力量测试导致 BP 和 HR 变化更大。1RM 时心血管压力较低表明，与 70-80 岁男性的次最大力量测试相比，这种方法可能更安全。
