Version 1
: Received: 3 November 2023 / Approved: 7 November 2023 / Online: 7 November 2023 (06:32:44 CET)
How to cite:
Ferhi, H.; Magtouf, E.; Attia, A.; Durand, S.; Boyas, S.; Beaune, B.; Chortane, S.G.; Maktouf, W. Rate of Force Development From Submaximal to Maximal Plantar Flexor Force in Older Adults With Sarcopenic Obesity: A Cross-Sectional Study. Preprints2023, 2023110400. https://doi.org/10.20944/preprints202311.0400.v1
Ferhi, H.; Magtouf, E.; Attia, A.; Durand, S.; Boyas, S.; Beaune, B.; Chortane, S.G.; Maktouf, W. Rate of Force Development From Submaximal to Maximal Plantar Flexor Force in Older Adults With Sarcopenic Obesity: A Cross-Sectional Study. Preprints 2023, 2023110400. https://doi.org/10.20944/preprints202311.0400.v1
Ferhi, H.; Magtouf, E.; Attia, A.; Durand, S.; Boyas, S.; Beaune, B.; Chortane, S.G.; Maktouf, W. Rate of Force Development From Submaximal to Maximal Plantar Flexor Force in Older Adults With Sarcopenic Obesity: A Cross-Sectional Study. Preprints2023, 2023110400. https://doi.org/10.20944/preprints202311.0400.v1
APA Style
Ferhi, H., Magtouf, E., Attia, A., Durand, S., Boyas, S., Beaune, B., Chortane, S.G., & Maktouf, W. (2023). Rate of Force Development From Submaximal to Maximal Plantar Flexor Force in Older Adults With Sarcopenic Obesity: A Cross-Sectional Study. Preprints. https://doi.org/10.20944/preprints202311.0400.v1
Chicago/Turabian Style
Ferhi, H., Sabri Gaied Chortane and Wael Maktouf. 2023 "Rate of Force Development From Submaximal to Maximal Plantar Flexor Force in Older Adults With Sarcopenic Obesity: A Cross-Sectional Study" Preprints. https://doi.org/10.20944/preprints202311.0400.v1
Abstract
Background: The rate of force development (RFD) plays a pivotal role not only in preventing falls but also in ensuring successful completion of many functional tasks that demand swift muscle power rather than prolonged strength. Despite its importance, there is limited compre-hensive research on the relationship between RFD and walking speed, especially in older adults with Sarcopenic Obesity (SO). Objective: to investigate the influence of obesity on neuromuscular markers in older adults with SO and to assess the relationship between neuromuscular markers and gait speed in older adults with SO. Methods: a cohort of 42 participants was categorized based on their BMI into two groups: the sarcopenic non-obese group (CG, n=22; age=81.13±4.02; BMI=25.13±3.35) and the sarcopenic obese group (SOG, n=20; age=77.71±2.95; BMI=34.46±3.25). Gait speed was measured using a 10-meter test. Additionally, the isometric strength of the plantar flexor muscles was assessed during maximal voluntary contractions. Absolute Peak force (aPeak, N) were documented at intervals of 50 ms (a50, N), 100 ms (a100, N), and 200 ms (a200, N), subsequently normalized to body mass (r50, r100, r200, N). The RFD was derived in two phases: from the start of the contraction to 50 ms (RFD50-100) and from 100 to 200 ms (RFD100-200) and calculated from the linear slop of the force – time curve (Δ force/Δ time). Conclusion: Obesity negatively impacts neuromuscular markers in older adults. Notably, RFD emerges as the dominant factor influencing gait speed, accounting for an impressive 51% of its variability, far surpassing the impact of relative peak force. This underscores the imperative of evaluating neuromuscular health in older adults with SO to provide insights into mobility out-comes.
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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