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Alternate stair descent strategies for reducing joint moment demands in older individuals

King, Stephanie L.; Underdown, Tobias; Reeves, Neil D.; Baltzopoulos, Vasilios; Maganaris, Constantinos N.


Tobias Underdown

Neil D. Reeves

Vasilios Baltzopoulos

Constantinos N. Maganaris


© 2018 Elsevier Ltd Descending stairs requires elevated joint moment-generating capability in the lower limbs, making it a challenging daily activity, particularly for older individuals. The aim of the study was to investigate the influence of three different strategies for descending standard and increased height stairs: step-over-step (SoS), step-by-step (SbS) and side-step (SS) on lower limb kinetics in older people. Eleven participants (mean ± SD age: 74.8 ± 3.1 years, height: 1.63 ± 0.07 m, mass: 67.7 ± 9.5 kg) descended a four-step custom built instrumented staircase at a self-selected speed, adopting each of the three strategies, at two configurations: a step-rise height of 170 mm (standard; STD) and a step-rise height of 255 mm (increased; INC). 3D motion capture, synchronised with embedded force plates enabled the calculation of joint kinetics of lead and trail limbs. Data were analysed using a Linear Mixed Model with gait speed selected as a covariate during weight acceptance (WA) and controlled lowering (CL) phases. A large increase in hip extensor moment in both WA and CL in the lead limb was evident during both SoS and SbS at INC step height compared to STD (P


King, S. L., Underdown, T., Reeves, N. D., Baltzopoulos, V., & Maganaris, C. N. (2018). Alternate stair descent strategies for reducing joint moment demands in older individuals. Journal of biomechanics, 78, 126-133.

Journal Article Type Article
Acceptance Date Jul 23, 2018
Publication Date Sep 10, 2018
Deposit Date Jul 30, 2018
Publicly Available Date Sep 11, 2019
Print ISSN 0021-9290
Electronic ISSN 1873-2380
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 78
Pages 126-133
Keywords Biophysics; Rehabilitation; Orthopedics and Sports Medicine; Biomedical Engineering
Public URL
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