Show simple item record

dc.contributor.authorPanizzolo, F.
dc.contributor.authorMaiorana, Andrew
dc.contributor.authorNaylor, L.
dc.contributor.authorDembo, L.
dc.contributor.authorLloyd, D.
dc.contributor.authorGreen, D.
dc.contributor.authorRubenson, J.
dc.identifier.citationPanizzolo, F. and Maiorana, A. and Naylor, L. and Dembo, L. and Lloyd, D. and Green, D. and Rubenson, J. 2014. Gait analysis in chronic heart failure: The calf as a locus of impaired walking capacity. Journal of Biomechanics. 47 (15): pp. 3719-3725.

Reduced walking capacity, a hallmark of chronic heart failure (CHF), is strongly correlated with hospitalization and morbidity. The aim of this work was to perform a detailed biomechanical gait analysis to better identify mechanisms underlying reduced walking capacity in CHF. Inverse dynamic analyses were conducted in CHF patients and age- and exercise level-matched control subjects on an instrumented treadmill at self-selected treadmill walking speeds and at speeds representing +20% and –20% of the subjects’ preferred speed. Surprisingly, no difference in preferred speed was observed between groups, possibly explained by an optimization of the mechanical cost of transport in both groups (the mechanical cost to travel a given distance; J/kg/m). The majority of limb kinematics and kinetics were also similar between groups, with the exception of greater ankle dorsiflexion angles during stance in CHF. Nevertheless, over two times greater ankle plantarflexion work during stance and per distance traveled is required for a given triceps surae muscle volume in CHF patients. This, together with a greater reliance on the ankle compared to the hip to power walking in CHF patients, especially at faster speeds, may contribute to the earlier onset of fatigue in CHF patients. This observation also helps explain the high correlation between triceps surae muscle volume and exercise capacity that has previously been reported in CHF. Considering the key role played by the plantarflexors in powering walking and their association with exercise capacity, our findings strongly suggest that exercise-based rehabilitation in CHF should not omit the ankle muscle group.

dc.subjectHeart failure
dc.subjectGait mechanics
dc.subjectTriceps surae
dc.subjectMuscle work
dc.titleGait analysis in chronic heart failure: The calf as a locus of impaired walking capacity
dc.typeJournal Article
dcterms.source.titleJournal of Biomechanics
curtin.departmentSchool of Physiotherapy
curtin.accessStatusFulltext not available

Files in this item


This item appears in the following Collection(s)

Show simple item record