Document Detail


Three dimensional musculoskeletal modelling of the abdominal crunch resistance training exercise.
MedLine Citation:
PMID:  23025339     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Abstract The aim of this study was to evaluate the benefits and limitations of using three dimensional (3D) musculoskeletal modelling (LifeModeler(TM)) in assessing the safety and efficacy of exercising on an abdominal crunch resistance training machine. Three anthropometric cases were studied, representing a 5(th) percentile female, and 50(th) percentile and 95(th) percentile male. Results indicated that the LifeModeler(TM) default model was capable of solving the forward dynamics simulations without adjustments. The modelling was able to indicate high risk for back injury when performing the abdominal crunch exercise as a result of the unacceptable intervertebral joint loading that occurs during the exercise. Individuals with small anthropometric dimensions such as some females and children cannot be accommodated suitably on the abdominal crunch machine which negatively impacts exercise posture and technique. Hip flexor muscle contribution in the execution of the exercise for the 5(th) percentile female was substantial thus reducing the efficacy of the exercise in isolating the abdominal muscles.
Authors:
Kim Nolte; Pieter E Krüger; P Schalk Els; Heinrich Nolte
Related Documents :
22971879 - Difference in caloric expenditure in sitting versus standing desks.
16411899 - The effect of body condition on ovarian activity of free ranging tropical jennies (equu...
24627629 - The perspectives of older women with chronic neck pain on perceived effects of qigong a...
8893099 - Effect of rotation on the generation of reactive oxygen species in human semen.
24586359 - Treadmill workstations: the effects of walking while working on physical activity and w...
565409 - Comparisons of the ovulatory and steroidogenic activities of the left and right ovaries...
10634279 - Ambulance, fire, and police dispatch times compared with the atomic clock.
18509579 - A randomized controlled trial of aquatic and land-based exercise in patients with knee ...
17497709 - Relative reinforcing value of exercise in inpatients with anorexia nervosa: model devel...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-2
Journal Detail:
Title:  Journal of sports sciences     Volume:  -     ISSN:  1466-447X     ISO Abbreviation:  J Sports Sci     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8405364     Medline TA:  J Sports Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
a University of Pretoria, Biokinetics, Sport and Leisure Sciences, LC de Villiers Sports Centre , South Street , Hatfield , Pretoria , 0002 , South Africa.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Time-varying latent effect model for longitudinal data with informative observation times.
Next Document:  Comparison between single-cell cultures and tissue cultures as model systems for evaluating the modu...