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Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
Published on: May 1, 2018
Stature is an essential predictor of muscle strength in children
Jean-Yves Hogrel1, Valérie Decostre, Corinne Alberti
1Institut de Myologie, UPMC UM 76, INSERM U 974, CNRS UMR 7215, Paris Cedex 13, 75651, France. jy.hogrel@institut-myologie.org
Insights
Muscle strength in children is strongly linked to their height. This study developed predictive models for muscle functions, finding no learning effect between testing sessions, suggesting reliable strength assessments for children.
Area of Science:
- Pediatric Health
- Human Physiology
- Biomechanical Analysis
Background:
- Children with growth retardation or short stature often exhibit reduced muscle strength compared to peers.
- Understanding the relationship between stature and strength is crucial for assessing pediatric neuromuscular development.
Purpose of the Study:
- To determine if muscle strength in healthy children correlates with stature-related variables.
- To develop practical predictive models for muscle functions.
- To investigate potential learning effects in strength measurements over two visits.
Main Methods:
- Measured hand grip, elbow flexion/extension, and knee flexion/extension strength.
- Utilized fixed dynamometry in 96 healthy children (ages 5-17).
Main Results:
- Muscle strength was found to be highly dependent on height in the pediatric population studied.
- Predictive models for tested muscle functions were successfully developed.
- No significant learning effect was observed between the first and second strength measurement visits.
Conclusions:
- Fixed dynamometry provides reliable strength measurements in children with standardized procedures.
- A significant relationship exists between body stature and muscle strength in pediatric populations.
- Developed predictive equations can aid in evaluating neuromuscular involvement in children with stature-affecting disorders.
Background:
Children with growth retardation or short stature generally present with lower strength than children of the same chronological age. The aim of the study was to establish if strength was dependent on variables related to stature in a population of healthy children and to propose practical predictive models for the muscle functions tested. A secondary aim was to test for any learning effects concerning strength measured at two successive visits by children.
Methods:
Hand grip, elbow flexion and extension, and knee flexion and extension were measured by fixed dynamometry in 96 healthy subjects (47 girls and 49 boys, aged from 5 to 17 years).
Results:
For the present paediatric population, muscle strength was highly dependent on height. Predictive models are proposed for the muscle functions tested. No learning effect between the first and the second visit was detected for any of the muscle functions tested.
Conclusions:
This work shows that strength measurements using fixed dynamometry are reliable in children when using appropriate standardization of operating procedures. It underlines the particular relationship between body stature and muscle strength. Predictive equations may help with assessing the neuromuscular involvement in children suffering from various disorders, particularly those affecting their stature.
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