Article

Objectives : To define the relative hip extensor muscle strengths values identified by the 4 grades obtained with a supine manual muscle test (MMT) and to compare these values with those indicated by the traditional prone test. Design: Comparison of 4 manual supine strength grades with isometric hip extension joint torque; K statistic-determined interrater reliability, and analyses of variance identified between grade differences in torque. Setting: Pathokinesiology laboratory. Participants : Adult volunteers recruited from local community and outpatient clinics. Reliability testing : 16 adults with postpolio (31 limbs). Validity testing (2 groups) : 18 subjects without pathology (18 limbs), and 26 people with clinical signs of hip extensor weakness (51 limbs). Interventions: Not applicable. Main Outcome Measures :
Supine hip extensor manual muscle grade and isometric hip extension torque. Results : Reliability testing showed excellent agreement (82%). Subjects with pathology had significant differences in mean torque (P<.01) for the assigned grade 5 (176Nm), grade 4 (103Nm), grade 3 (67Nm), and grade 2 (19Nm). Healthy adults showed significant differences between grade 5 (212Nm) and grade 4 (120Nm) in mean torque (P<.05). Conclusions :
The supine MMT is a reliable and valid method with which to assess hip extension strength.

Langue : ANGLAIS