Assessment of the reproducibility of strength and endurance handgrip parameters using a digital analyser
Assessment of the reproducibility of strength and endurance handgrip parameters using a digital analyser
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使用数字分析仪评估握力和耐力握力参数的再现性
DOI：
10.1007/bf00377710
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
V. Turjanmaa
中科院分区：
文献类型：
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作者：
M. Walamies;V. Turjanmaa
一组 40 名健康个体（27 名女性和 13 名男性）参加了握力测试，并在 1-2 个月后重新进行测试。使用具有数字化信号和计算机打印输出的应变计传感器。首先进行 3 次 5 s 最大挤压测试，然后进行 1 次最大功率 45%~55% 的耐力测试。最佳最大值通常 (42%) 在第三次（初始测试）或第二次（重新测试）尝试中实现。最大值的重现性很好；初次测试和重新测试之间的皮尔逊相关系数 (r=0.98) 甚至略高于使用旧模拟仪器进行的研究。最大值[361 (SD 109) N，初始测试和368 (SD 110) N，重新测试]的差异不显着。最大值中度 12% 的长期变化具有统计显着性。在这个简短的测试中，功率因数（功率随时间的积分面积）的再现性也非常好，与最大值密切相关（r=0.98−0.99）。其他指标（握力率、疲劳百分比和松弛率）不够稳定，无法实用。耐力结果有些变化（r=0.73），这暗示了主要变量动机。只有耐力的显着变化超过 50% 才具有统计学意义。在重新测试中，耐力显着增加，尽管 anr 值为 0.82，但这将使其在后续研究中的使用变得困难。我们发现基于计算机的握力测试在评估最大自愿力量方面既精确又实用。耐力更难重现。
A group of 40 healthy individuals (27 women and 13 men) participated in a handgrip test and were retested 1–2 months later. A strain-gauge sensor with a digitised signal and computerized printout was used. A 5-s maximal squeeze test was first made three times, followed by one endurance test with 45%–55% power of the maximal value. The best maximal value was most often (42%) achieved in the third (initial test) or second (retest) attempt. The reproducibility of maximal value was very good; the Pearson correlation coefficient between initial test and retest (r=0.98) was even slightly higher than in studies with older analogue instruments. The difference of maximal values [361 (SD 109) N, initial test and 368 (SD 110) N, retest] was insignificant. A moderate 12% long-term change in maximal value was statistically significant. Reproducibility of the power factor (integrated area of power with time) was also very good in this short test, correlating closely (r=0.98−0.99) with the maximal value. Other indexes (grip rate, fatigue percentage and relaxation rate) were not stable enough to be practical. Endurance results were somewhat variable (r=0.73), which implied in the main variable motivation. Only marked changes of over 50% in endurance were statistically significant. Endurance power increased significantly in the retest, which, in spite of anr-value of 0.82, would make its use in a follow-up study difficult. We found the computer-based handgrip test both precise and practical in assessing maximal voluntary strength; endurance was more difficult to reproduce.