Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Does Obesity Affect the Rate of Force Development in Plantar Flexor Muscles among Older Adults? A Cross-Sectional Study

Hamza Ferhi
,
Elmoetez Magtouf
,
Ahmed Attia
ORCID logo ,
Sébastien Boyas
,
Bruno Beaune
ORCID logo ,
Sylvain Durand
ORCID logo ,
Sabri Gaied Chortane
,
Wael Maktouf
* ORCID logo
Version 1 : Received: 21 February 2024 / Approved: 23 February 2024 / Online: 23 February 2024 (04:13:33 CET)

A peer-reviewed article of this Preprint also exists.

Ferhi, H.; Magtouf, E.; Attia, A.; Durand, S.; Boyas, S.; Beaune, B.; Chortane, S.G.; Maktouf, W. Does Obesity Affect the Rate of Force Development in Plantar Flexor Muscles among Older Adults? Sports 2024, 12, 89. Ferhi, H.; Magtouf, E.; Attia, A.; Durand, S.; Boyas, S.; Beaune, B.; Chortane, S.G.; Maktouf, W. Does Obesity Affect the Rate of Force Development in Plantar Flexor Muscles among Older Adults? Sports 2024, 12, 89.

Abstract

The literature offers limited information on the effect of obesity on the rate of force development, a critical parameter for mobility in older adults. The objectives of this study were; to explore the influence of obesity on RFD in older adults and to examine the association between this neuromuscular parameter and walking speed. 42 older adults were classified into two groups: the control group (CG, n=22; age=81.13±4.02 years; Body mass index (BMI)=25.13±3.35 kg/m²), and the obese group (OG, n=20; age=77.71±2.95 years; BMI=34.46±3.25 kg/m²). Walking speed (m/s) was measured using the 10-meter walking test. Neuromuscular parameters of the plantar flexors were evaluated during a maximal voluntary contraction test using a dynamometer. The RFD was calculated from the linear slop of the force – time curve in two phases: from the onset of the contraction to 50 ms (RFD50-100) and from 100 to 200 ms (RFD100-200). The gait speed was lower in the OG compared to the CG (p

Keywords

overweight; explosive force; triceps surae; walking

Subject

Public Health and Healthcare, Physical Therapy, Sports Therapy and Rehabilitation

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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