Document Detail

RCT of the Effects of a Trunk Stabilization Program on Trunk Control and Knee Loading.
MedLine Citation:
PMID:  22525777     Owner:  NLM     Status:  Publisher    
BACKGROUND: Many athletic maneuvers involve coordination of movement between the lower and upper extremities, suggesting better core muscle utilization may lead to improved athletic performance and reduced injury risk. PURPOSE: To determine to what extent a training program with quasi-static trunk stabilization exercises would improve measures of core performance, leg strength, agility, and dynamic knee loading, compared to a program incorporating only resistance training. METHODS: 37 male subjects were randomly assigned to either a resistance training only (RT) or a resistance and trunk stabilization (TS) training program, each lasting 6 weeks. Core strength and endurance, trunk control, knee loading during unanticipated cutting, leg strength, and agility were collected pre- and post-training. RESULTS: Between-group analyses showed the TS group significantly improved only core endurance when compared to the RT group (side bridge; p=0.050). Within-group analyses showed the TS group improved lateral core strength (MVIC, cable on non-dominant side; 44.5±61.3N, p=0.037). Both groups increased leg strength (deadlift 1RM; TS: 55.1±46.5lbs, p=0.003; RT: 33.4±17.5lbs, p<0.001) and decreased sagittal plane trunk control (sudden force release (SFR) test; cable in front; TS: 2.54±3.68°, p=0.045; RT: 3.47±2.83°, p=0.004), but only the RT group decreased lateral trunk control (SFR; cable on dominant side; 1.36±1.65°, p=0.029). The RT group improved standing broad jump (73.2±108.4mm, p=0.049), but also showed increased knee abduction moment during unanticipated cutting (1.503 fold increase [%bw*ht], p=0.012). CONCLUSIONS: Quasi-static trunk stabilization exercises did not improve core strength, trunk control or knee loading relative to resistance training, potentially because of a lack of exercises including unexpected perturbations and dynamic movement. Together these results suggest the potential importance of targeted trunk control training to address these known ACL injury risk factors.
Steve T Jamison; Ryan J McNeilan; Gregory S Young; Deborah L Givens; Thomas M Best; Ajit M W Chaudhari
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-19
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  -     ISSN:  1530-0315     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1Department of Orthopaedics, Ohio State University 2OSU Sports Health and Performance Institute, Ohio State University 3Department of Mechanical and Aerospace Engineering, Ohio State University 4College of Medicine, Ohio State University 5Center for Biostatistics, Ohio State University 6Department of Physical Therapy, Creighton University 7Department of Family Medicine, Ohio State University.
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