Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USA.
J Orthop Sports Phys Ther. 2013 Jun;43(6):422-6. doi: 10.2519/jospt.2013.4403. Epub 2013 Mar 18.
Controlled laboratory study: cross-sectional.
To determine if proprioception, measured by the threshold to detection of passive motion (TDPM), differed in individuals who regularly participate in moderate-intensity exercise for fitness as compared to individuals involved in high-intensity skilled exercise.
Previous research has been equivocal as to whether exercise training is associated with superior proprioceptive acuity, in particular, exercise that includes dynamic postural challenges such as cutting and pivoting.
Two groups of 25 healthy individuals (18-32 years old) were recruited. One group consisted of individuals who performed moderate-activity level exercises for 5 to 10 hours per week. Participants in the other group performed high-activity level exercises, including high-speed cutting and pivoting activities, at least 10 hours per week. Proprioception was determined using TDPM, in which the knee was slowly extended or flexed at an angular velocity of 0.5°/s or less from a starting position of 40° of knee flexion.
Individuals participating in competitive, high-intensity skilled exercise demonstrated better acuity (average of both limbs) of TDPM (mean ± SD, 0.81° ± 0.38°; P<.001) than those participating in moderate-intensity exercise for fitness (1.53° ± 0.58°). A low but statistically significant association (r = -0.38, P = .006) was found between weekly duration of exercise and proprioceptive threshold as measured by TDPM.
These results suggest that perceptual thresholds of passive movement may be enhanced, depending on activity level and associated postural challenge, and that higher level and increased amount of exercise may promote enhanced neurosensory processing in these individuals. Consequently, high-intensity skilled training may deserve further emphasis in orthopaedic rehabilitation.
对照实验室研究：横断面研究。
确定定期进行中等强度健身运动的个体与进行高强度技能运动的个体相比，其被动运动检测阈（threshold to detection of passive motion，TDPM）测量的本体感觉是否存在差异。
关于运动训练是否与优越的本体感觉敏锐度相关，既往研究结果并不一致，特别是涉及到动态姿势挑战的运动，如变向和急停。
招募了两组各 25 名健康个体（18-32 岁）。一组由每周进行 5 至 10 小时中等强度运动的个体组成。另一组参与者每周进行 10 小时或以上的高强度运动，包括高速变向和急停活动。本体感觉通过 TDPM 确定，即膝关节从 40°的起始屈曲位置以 0.5°/s 或更低的角速度缓慢伸展或屈曲。
参与竞技性高强度技能运动的个体表现出更好的 TDPM 敏锐度（平均两肢）（平均值±标准差，0.81°±0.38°；P<.001），而进行中等强度健身运动的个体则为 1.53°±0.58°。每周运动时间与 TDPM 测量的本体感觉阈值之间存在低但具有统计学意义的关联（r=-0.38，P=.006）。
这些结果表明，根据活动水平和相关姿势挑战，被动运动的感知阈值可能会增强，而更高水平和更多的运动可能会促进这些个体的神经感觉处理增强。因此，高强度技能训练可能值得在矫形康复中进一步强调。
