PDF(Pubmed)
Abstract：
Exercise is a front-line intervention to increase functional capacity and reduce pain and disability in people with low strength levels or disorders. However, there is a lack of validated field-based tests to check the initial status and, more importantly, to control the process and make tailored adjustments in load, intensity, and recovery. We aimed to determine the test-retest reliability of a submaximal, resistance-band test to evaluate the strength of the trunk stability muscles using a portable force sensor in middle-aged adults (48 ± 13 years) with medically diagnosed chronic low back pain and healthy peers (n = 35). Participants completed two submaximal progressive tests of two resistance-band exercises (unilateral row and Pallof press), consisting of 5 s maintained contraction, progressively increasing the load. The test stopped when deviation from the initial position by compensation movements occurred. Trunk muscle strength (CORE muscles) was monitored in real time using a portable force sensor (strain gauge). Results revealed that both tests were highly reliable (intra-class correlation [ICC] > 0.901) and presented low errors and coefficients of variation (CV) in both groups. In particular, people with low back pain had errors of 14-19 N (CV = 9-12%) in the unilateral row test and 13-19 N (CV = 8-12%) in the Pallof press. No discomfort or pain was reported during or after the tests. These two easy-to-use and technology-based tests result in a reliable and objective screening tool to evaluate the strength and trunk stability in middle-aged adults with chronic low back pain, considering an error of measurement < 20 N. This contribution may have an impact on improving the individualization and control of rehabilitation or physical training in people with lumbar injuries or disorders.
摘要：
运动是一种前线干预措施，可提高低力量水平或疾病患者的功能能力并减轻疼痛和残疾。然而,缺乏经过验证的基于现场的测试来检查初始状态，更重要的是,控制过程并对负载进行量身定制的调整，强度,和恢复。我们的目的是确定次最大值的重测可靠性，在医学诊断为慢性下腰痛的中年人（48±13岁）和健康同龄人（n=35）中，使用便携式力传感器评估躯干稳定肌肉的力量。参与者完成了两次阻力带练习的两次次最大渐进式测试（单侧行和Pallof按），由5秒保持的收缩组成，逐渐增加负荷。当由于补偿移动而偏离初始位置时,测试停止。使用便携式力传感器(应变仪)实时监测躯干肌肉力量(CORE肌肉)。结果显示，两种测试都高度可靠（类内相关性[ICC]>0.901），并且两组的误差和变异系数（CV）都很低。特别是,腰背痛患者在单侧行测试中的误差为14-19N(CV=9-12%),在Pallof按压中的误差为13-19N(CV=8-12%).在测试期间或之后没有报告不适或疼痛。这两个易于使用和基于技术的测试结果在一个可靠和客观的筛选工具，以评估中年人的力量和躯干稳定性慢性腰痛，考虑测量误差<20N。这种贡献可能对改善腰椎损伤或疾病患者的康复或体育锻炼的个性化和控制产生影响。
