Hughes C J, Hurd K, Jones A, Sprigle S
Graduate School of Physical Therapy, Slippery Rock University, Slippery Rock, Pa. 16057, USA.
J Orthop Sports Phys Ther. 1999 Jul;29(7):413-20. doi: 10.2519/jospt.1999.29.7.413.
Single-group, repeated measures.
To investigate the relationship between tubing length and tubing tension for 6 colors of Thera-Band tubing (each color representing a different level of resistance) and to estimate the resistive shoulder torque provided during shoulder abduction exercise.
Thera-Band tubing is popular for providing resistance in rehabilitation strengthening programs. Unfortunately, it is difficult to compare use of elastic tubing with other resistance training methods because no published data exist on how much resistance is being provided during exercise.
Nine male and 6 female subjects (age, 25.9 +/- 3.6 years; height, 173 +/- 10 cm) performed shoulder abduction, using 6 colors of tubing. A strain gauge attached at the fixed end of the tubing directly measured the tension generated during stretch. For each color of tubing, each subject momentarily held a position at 30 degrees, 60 degrees, 90 degrees, 120 degrees, and 150 degrees of abduction. Shoulder joint abduction, limb segment position, and tubing length were analyzed by means of the Peak Motion Measurement System. Simple linear regression equations predicted tubing tension from percent change in tubing length at the joint angle positions. A 2-way (5 x 6) repeated-measures ANOVA determined the mean differences in tubing tension across tubing colors at the shoulder abduction positions.
Strong linear relationships were found for each tubing tension when referenced according to changes in tubing length. Significant differences in tension were found for the various colors of tubing. The resistive torque curves for each color tubing were similar to isotonic exercise.
Thera-Band tubing provides linear resistance during shoulder abduction, but the resistive torque provided by the tubing mimics isotonic exercise.
单组重复测量。
研究6种颜色的Thera-Band弹力带（每种颜色代表不同的阻力水平）的管长与管张力之间的关系，并估计肩部外展运动时提供的阻力性肩部扭矩。
Thera-Band弹力带在康复强化训练中提供阻力很受欢迎。不幸的是，由于没有关于运动时提供了多少阻力的公开数据，所以很难将弹性管的使用与其他阻力训练方法进行比较。
9名男性和6名女性受试者（年龄25.9±3.6岁；身高173±10厘米）使用6种颜色的弹力带进行肩部外展。附着在弹力带固定端的应变仪直接测量拉伸过程中产生的张力。对于每种颜色的弹力带，每个受试者在肩部外展30度、60度、90度、120度和150度时短暂保持一个姿势。通过Peak Motion测量系统分析肩关节外展、肢体节段位置和管长。简单线性回归方程根据关节角度位置处管长的百分比变化预测管张力。双向（5×6）重复测量方差分析确定了肩部外展位置上不同颜色弹力带的管张力平均差异。
根据管长变化参考时，每种管张力都发现了很强的线性关系。不同颜色的弹力带在张力上存在显著差异。每种颜色弹力带的阻力扭矩曲线类似于等张运动。
Thera-Band弹力带在肩部外展时提供线性阻力，但弹力带提供的阻力扭矩类似于等张运动。
