Influence of age on neuromuscular control during a dynamic weight-bearing task

Sangeetha Madhavan; Sarah Burkart; Gail Baggett; Katie Nelson; Trina Teckenburg; Mike Zwanziger; Richard K Shields

doi:10.1123/japa.17.3.327

Back

Influence of age on neuromuscular control during a dynamic weight-bearing task

Journal article

Peer reviewed

Influence of age on neuromuscular control during a dynamic weight-bearing task

Sangeetha Madhavan, Sarah Burkart, Gail Baggett, Katie Nelson, Trina Teckenburg, Mike Zwanziger and Richard K Shields

Journal of aging and physical activity, Vol.17(3), pp.327-343

07/2009

DOI: 10.1123/japa.17.3.327

PMCID: PMC2758540

PMID: 19799103

View Online

Abstract

Neuromuscular control strategies might change with age and predispose the elderly to knee-joint injury. The purposes of this study were to determine whether long latency responses (LLRs), muscle-activation patterns, and movement accuracy differ between the young and elderly during a novel single-limb-squat (SLS) task. Ten young and 10 elderly participants performed a series of resistive SLSs (approximately 0-30 degrees) while matching a computer-generated sinusoidal target. The SLS device provided a 16% body-weight resistance to knee movement. Both young and elderly showed significant overshoot error when the knee was perturbed (p < .05). Accuracy ofthe tracking taskwas similar between the young and elderly (p = .34), but the elderly required more muscle activity than the younger participants (p < .05). The elderly group had larger LLRs than the younger group (p < .05). These results support the hypothesis that neuromuscular control of the knee changes with age and might contribute to injury.

Leg - physiology

Age Factors

Humans

Male

Muscle, Skeletal - physiology

Weight-Bearing - physiology

Central Nervous System - physiology

Young Adult

Exercise Test

Aging - physiology

Analysis of Variance

Time Factors

Female

Surveys and Questionnaires

Aged

Electromyography

Task Performance and Analysis

Weight Lifting - physiology

Isometric Contraction - physiology

Details

Title: Subtitle: Influence of age on neuromuscular control during a dynamic weight-bearing task
Creators: Sangeetha Madhavan - Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA
Sarah Burkart
Gail Baggett
Katie Nelson
Trina Teckenburg
Mike Zwanziger
Richard K Shields
Resource Type: Journal article
Publication Details: Journal of aging and physical activity, Vol.17(3), pp.327-343
Publisher: United States
DOI: 10.1123/japa.17.3.327
PMID: 19799103
PMCID: PMC2758540
ISSN: 1063-8652
eISSN: 1543-267X
Grant note: R01 NR010285 / NINR NIH HHS R01NR010285 / NINR NIH HHS R01 NR010285-05 / NINR NIH HHS
Language: English
Date published: 07/2009
Academic Unit: Orthopedics and Rehabilitation; Physical Therapy and Rehabilitation Science
Record Identifier: 9984047853902771

Metrics

13 Record Views

15 Times Cited - Web of Science