Lower limb muscle moments and power during recovery from forward loss of balance in male and female single and multiple steppers

Carty, Christopher P., Cronin, Neil J., Lichtwark, Glen A., Mills, Peter M. and Barrett, Rod S. (2012) Lower limb muscle moments and power during recovery from forward loss of balance in male and female single and multiple steppers. Clinical Biomechanics, 27 10: 1031-1037. doi:10.1016/j.clinbiomech.2012.07.009


Author Carty, Christopher P.
Cronin, Neil J.
Lichtwark, Glen A.
Mills, Peter M.
Barrett, Rod S.
Title Lower limb muscle moments and power during recovery from forward loss of balance in male and female single and multiple steppers
Journal name Clinical Biomechanics   Check publisher's open access policy
ISSN 0268-0033
1879-1271
Publication date 2012-12
Sub-type Article (original research)
DOI 10.1016/j.clinbiomech.2012.07.009
Volume 27
Issue 10
Start page 1031
End page 1037
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Formatted abstract
Background: Studying recovery responses to loss of balance may help to explain why older adults are susceptible to falls. The purpose of the present study was to assess whether male and female older adults, that use a single or multiple step recovery strategy, differ in the proportion of lower limb strength used and power produced during the stepping phase of balance recovery.
Methods: Eighty-four community-dwelling older adults (47 men, 37 women) participated in the study. Isometric strength of the ankle, knee and hip joint flexors and extensors was assessed using a dynamometer. Loss of balance was induced by releasing participants from a static forward lean (4 trials at each of 3 forward lean angles). Participants were instructed to recover with a single step and were subsequently classified as using a single or multiple step recovery strategy for each trial.
Findings: (1) Females were weaker than males and the proportion of females that  were able to recover with a single step were lower than for males at each lean magnitude. (2) Multiple compared to single steppers used a significantly higher proportion of their hip extension strength and produced less knee and ankle joint peak power during stepping, at the intermediate lean angle.
Interpretation: Strength deficits in female compared to male participants may explain why a lower proportion of female participants were able to recover with a single step. The inability to generate sufficient power in the stepping limb appears to be a limiting factor in single step recovery from forward loss of balance.
Keyword Ageing
Falls
Muscle power
Forward loss of balance
Dynamic Stability Control
Age-Related Differences
Older-Adults
Gender-Differences
Regain Balance
Joint Torques
Fall
Strength
Responses
Strategy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Human Movement and Nutrition Sciences Publications
 
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