Bart Dingenen1, Bart Malfait2, Jos Vanrenterghem3, Sabine M P Verschueren2, Filip F Staes2. 1. Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Tervuursevest 101, 3001 Leuven, Belgium. Electronic address: bart.dingenen@faber.kuleuven.be. 2. Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Tervuursevest 101, 3001 Leuven, Belgium. 3. Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, UK.
Abstract
OBJECTIVE: To investigate the reliability and validity of the measurement of lateral trunk motion (LTM) in two-dimensional (2D) video analysis of unipodal functional screening tests. DESIGN: Observational study. SETTING: Research laboratory. PARTICIPANTS: Forty-three injury-free female athletes. MAIN OUTCOME MEASURES: Knee valgus (KV) and lateral trunk motion (LTM) angles were measured with a standard digital camera during the single leg squat and the single leg drop vertical jump (SLDVJ). Three-dimensional motion analysis was used during the SLDVJ to measure peak external knee abduction moment (pKAM). Intraclass correlation coefficients were calculated to assess the intra- and intertester reliability of the LTM angle. Correlations between 2D angles and pKAM were calculated for the SLDVJ. RESULTS: Excellent intraclass correlation coefficients for the LTM angle were found within (0.99-1.00) and between testers (0.98-0.99). The sum of KV and LTM was significantly correlated with the pKAM during the SLDVJ for the dominant (r = -0.36; p = 0.017) and non-dominant leg (r = -0.32; p = 0.034), while either angle alone was not. CONCLUSIONS: LTM can be measured with excellent intra- and intertester reliability. The combination of KV and LTM was moderately associated with pKAM and thus including LTM may aid assessment of movement quality and injury risk.
OBJECTIVE: To investigate the reliability and validity of the measurement of lateral trunk motion (LTM) in two-dimensional (2D) video analysis of unipodal functional screening tests. DESIGN: Observational study. SETTING: Research laboratory. PARTICIPANTS: Forty-three injury-free female athletes. MAIN OUTCOME MEASURES: Knee valgus (KV) and lateral trunk motion (LTM) angles were measured with a standard digital camera during the single leg squat and the single leg drop vertical jump (SLDVJ). Three-dimensional motion analysis was used during the SLDVJ to measure peak external knee abduction moment (pKAM). Intraclass correlation coefficients were calculated to assess the intra- and intertester reliability of the LTM angle. Correlations between 2D angles and pKAM were calculated for the SLDVJ. RESULTS: Excellent intraclass correlation coefficients for the LTM angle were found within (0.99-1.00) and between testers (0.98-0.99). The sum of KV and LTM was significantly correlated with the pKAM during the SLDVJ for the dominant (r = -0.36; p = 0.017) and non-dominant leg (r = -0.32; p = 0.034), while either angle alone was not. CONCLUSIONS: LTM can be measured with excellent intra- and intertester reliability. The combination of KV and LTM was moderately associated with pKAM and thus including LTM may aid assessment of movement quality and injury risk.
Authors: Sophia Ulman; Ashley Erdman; Alex Loewen; Michael Dressing; Charles Wyatt; Gretchen Oliver; Lauren Butler; Dai Sugimoto; Amanda M Black; Joseph Janosky Journal: Front Sports Act Living Date: 2022-06-24
Authors: M K Rossi; K Pasanen; A Heinonen; S Äyrämö; A M Räisänen; M Leppänen; G Myklebust; T Vasankari; P Kannus; J Parkkari Journal: BMC Musculoskelet Disord Date: 2020-06-05 Impact factor: 2.362