OBJECTIVE: To investigate the influence of strength values and fat mass on functional independence of men with different spinal cord injury (SCI) levels. DESIGN: Cross-sectional study. SETTING: Hospital network. PARTICIPANTS: Men with SCI (N=45). INTERVENTIONS: Subjects were assessed in functional independence scales, a 1 repetition maximum (1RM) test, and body composition to detect absolute and relative strength: 1RM divided by body mass (BM) and lean body mass (LBM), respectively. MAIN OUTCOME MEASURES: Stepwise multiple regression analysis was used to verify the influence of predictors on functional independence (FIM and Spinal Cord Independence Measure [SCIM] scale and subscales). Receiver operating characteristic curves were created to identify cutoff points of strength for functional independence. RESULTS: The best models for FIM total, FIM mobility, and SCIM total used 1RM as the best predictor (adjusted R2=.75, .67, and .65, respectively; P<.05). Relative strength (1RM/LBM) was the best predictor for SCIM mobility (adjusted R2=.62, P<.05). A FIM score of 69 has a 1RM cutoff point of 50.1kg, and a FIM score of 76 has cutoff points of .73 for 1RM/BM and .91 for 1RM/LBM. A SCIM score of 68 has cutoff points for 1RM, 1RM/BM, and 1RM/LBM of 50.1kg, .77, and .92, respectively. CONCLUSIONS: Cutoff points of relative strength should be used as determinant variables for independence, health, or sports performance. This study may contribute to more adequate guidance of physical activity during a rehabilitation program and after discharge.
OBJECTIVE: To investigate the influence of strength values and fat mass on functional independence of men with different spinal cord injury (SCI) levels. DESIGN: Cross-sectional study. SETTING: Hospital network. PARTICIPANTS: Men with SCI (N=45). INTERVENTIONS: Subjects were assessed in functional independence scales, a 1 repetition maximum (1RM) test, and body composition to detect absolute and relative strength: 1RM divided by body mass (BM) and lean body mass (LBM), respectively. MAIN OUTCOME MEASURES: Stepwise multiple regression analysis was used to verify the influence of predictors on functional independence (FIM and Spinal Cord Independence Measure [SCIM] scale and subscales). Receiver operating characteristic curves were created to identify cutoff points of strength for functional independence. RESULTS: The best models for FIM total, FIM mobility, and SCIM total used 1RM as the best predictor (adjusted R2=.75, .67, and .65, respectively; P<.05). Relative strength (1RM/LBM) was the best predictor for SCIM mobility (adjusted R2=.62, P<.05). A FIM score of 69 has a 1RM cutoff point of 50.1kg, and a FIM score of 76 has cutoff points of .73 for 1RM/BM and .91 for 1RM/LBM. A SCIM score of 68 has cutoff points for 1RM, 1RM/BM, and 1RM/LBM of 50.1kg, .77, and .92, respectively. CONCLUSIONS: Cutoff points of relative strength should be used as determinant variables for independence, health, or sports performance. This study may contribute to more adequate guidance of physical activity during a rehabilitation program and after discharge.
Authors: Frederico Ribeiro Neto; Rodrigo R Gomes Costa; Jefferson R Dorneles; Carlos W Gonçalves; João H C L Veloso; Rodrigo L Carregaro Journal: Top Spinal Cord Inj Rehabil Date: 2021-08-13