Obesity-related alterations in anticipatory postural mechanisms associated with gait initiation
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RESEARCH ARTICLE
Obesity‑related alterations in anticipatory postural mechanisms associated with gait initiation Teddy Caderby1 · Nathan Caron1 · Chantal Verkindt1 · Bruno Bonazzi1 · Georges Dalleau1 · Nicolas Peyrot1,2 Received: 11 March 2020 / Accepted: 26 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Obesity is known to have a detrimental effect on balance and motor performance during daily motor tasks. However, it remains unclear whether these obesity-related impairments are due to deficient anticipatory postural adjustments (APA) that precede voluntary movement. The objective of this study was to examine the effects of obesity on APA and the impacts related on motor performance and mediolateral postural stability during gait initiation. Fifteen obese and ten normal-weight young participants performed a series of gait initiation at their preferred speed. Our results showed that the durations and amplitudes of APA along both anteroposterior and mediolateral directions did not differ between the two groups (P > 0.05). In contrast, compared to normal-weight participants, mechanical effectiveness of APA was reduced in obese participants (P
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