TY - JOUR
T1 - Test-Retest reliability of the internal shoulder rotator muscles' stretch reflex in healthy men
AU - Heinke, Lars
AU - Knicker, Axel
AU - Albracht, Kirsten
PY - 2022/2
Y1 - 2022/2
N2 - Until now the reproducibility of the short latency stretch reflex of the internal rotator muscles of the glenohumeral joint has not been identified. Twenty-three healthy male participants performed three sets of external shoulder rotation stretches with various pre-activation levels on two different dates of measurement to assess test–retest reliability. All stretches were applied with a dynamometer acceleration of 104°/s2 and a velocity of 150°/s. Electromyographical response was measured via surface EMG. Reflex latencies showed a pre-activation effect (ƞ2 = 0,355). ICC ranged from 0,735 to 0,909 indicating an overall “good” relative reliability. SRD 95% lay between ±7,0 to ±12,3 ms. The reflex gain showed overall poor test–retest reproducibility. The chosen methodological approach presented a suitable test protocol for shoulder muscles stretch reflex latency evaluation. A proof-of-concept study to validate the presented methodical approach in shoulder involvement including subjects with clinically relevant conditions is recommended.
AB - Until now the reproducibility of the short latency stretch reflex of the internal rotator muscles of the glenohumeral joint has not been identified. Twenty-three healthy male participants performed three sets of external shoulder rotation stretches with various pre-activation levels on two different dates of measurement to assess test–retest reliability. All stretches were applied with a dynamometer acceleration of 104°/s2 and a velocity of 150°/s. Electromyographical response was measured via surface EMG. Reflex latencies showed a pre-activation effect (ƞ2 = 0,355). ICC ranged from 0,735 to 0,909 indicating an overall “good” relative reliability. SRD 95% lay between ±7,0 to ±12,3 ms. The reflex gain showed overall poor test–retest reproducibility. The chosen methodological approach presented a suitable test protocol for shoulder muscles stretch reflex latency evaluation. A proof-of-concept study to validate the presented methodical approach in shoulder involvement including subjects with clinically relevant conditions is recommended.
KW - Intraclass correlation coefficient
KW - Shoulder
KW - Standard error of measurement
KW - Stretch reflex
KW - Test–retest reliability
UR - https://www.mendeley.com/catalogue/8a494ecc-248b-3de9-a021-0f2d926fb210/
U2 - 10.1016/j.jelekin.2021.102611
DO - 10.1016/j.jelekin.2021.102611
M3 - Journal articles
SN - 1050-6411
VL - 62
JO - Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology
JF - Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology
M1 - 102611
ER -