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Heart rate and perceived muscle pain responses to a functional walking test in McArdle disease
Buckley, John P. Quinlivan, Ros M. Sim, Julius Short, Deborah S. Eston, Roger
Buckley, John P.
Quinlivan, Ros M.
Sim, Julius
Short, Deborah S.
Eston, Roger
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Publication Date
2014-04-14
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Abstract
The aim of this study was to assess a 12-min self-paced walking test in patients with McArdle disease. Twenty patients (44.7 ±11 years; 11 female) performed the walking test where walking speed, distance walked, heart rate (HR) and perceived muscle pain (Borg CR10 scale) were measured. Median (interquartile range) distance walked was 890 m (470–935). From 1 to 6 min, median walking speed decreased (from 75.0 to 71.4 m∙min–1) while muscle pain and %HR reserve increased (from 0.3 to 3.0 and 37% to 48%, respectively). From 7 to 12 min, walking speed increased to 74.2 m∙min–1, muscle pain decreased to 1.6 and %HR reserve remained between 45% and 48%. To make relative comparisons, HR and muscle pain were divided by walking speed and expressed as ratios. These ratios rose significantly between 1 and 6 min (HR:walking speed P = .001 and pain:walking speed P < .001) and similarly decreased between 6 and 11 min (P = .002 and P = .001, respectively). Peak ratios of HR:walking speed and pain:walking speed were inversely correlated to distance walked: rs (HR) = −.82 (P < .0001) and rs (pain) = −.55 (P = .012). Largest peak ratios were found in patients who walked < 650 m. A 12-min walking test can be used to assess exercise capacity and detect the second wind in McArdle disease.
Citation
Buckley, J. P., Quinlivan, R. M., Sim, J., Eston, R. G. & Short, D. S. (2014). Heart rate and perceived muscle pain responses to a functional walking test in McArdle disease. Journal of Sports Sciences, 32(16), 1561-1569.
Publisher
Taylor & Francis
Journal
Journal of Sports Sciences
Research Unit
DOI
10.1080/02640414.2014.906045
PubMed ID
PubMed Central ID
Type
Article
Language
en
Description
Series/Report no.
ISSN
0264-0414
EISSN
1466-447X