Oxygen uptake kinetics measured at the onset of comfortable self-paced walking in elderly women after hip fracture

Claire Fitzsimons, Hamish Simpson, Archie Young, Carolyn Greig

Research output: Contribution to journalArticlepeer-review

Abstract

The objectives of this study were to (1) evaluate the suitability of "comfortable" self-paced walking as a mode of exercise to study VO(2) kinetics, and (2) to investigate VO(2) kinetics after hip fracture using self-paced walking as the exercise mode. The study took place in a Scottish rehabilitation hospital physiotherapy gymnasium [hip fracture (HF) group] and a Scottish University Gymnasium [young (Y) and healthy elderly (HE) groups]. Fifteen women after HF (median age 81 years) and five Y and five older HE women (median ages 22 and 78 years, respectively) took part in the study. Volunteers completed three repeats of 3 min of "comfortable" self-paced walking on two occasions. The ensemble averaged VO(2) response from walks 2 and 3 on visits 1 and 2 were combined and characterised using nonlinear regression techniques to derive a Mean Response Time (MRT). Self-paced walking was described as "constant-load" exercise (coefficient of variation of lap speeds of
Original languageEnglish
Pages (from-to)355-62
Number of pages8
JournalEuropean Journal of Applied Physiology
Volume100
Issue number3
DOIs
Publication statusPublished - 2007

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