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Effects of tendon vibration and age on force reproduction task performed with wrist flexors

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Abstract

The sense of force is suggested to rely in part on proprioceptive inputs when assessed with a force reproduction task. The age-related alterations in proprioceptive system could, therefore, alter the sense of force. This study investigated the effects of tendon vibration on a force reproduction task performed with the wrist flexors in 18 young (20–40 year) and 18 older adults (60–90 year). Participants matched a target force (5% or 20% of their maximal force) with visual feedback of the force produced (target phase), and reproduced the target force without visual feedback (reproduction phase) after a 5-s rest period with or without vibration. The force reproduction error was expressed as the ratio between the force produced during the reproduction and the target phases. For the trials with vibration, the error was expressed as the ratio between the force produced during the reproduction phase performed with and without vibration. Tactile acuity was assessed with a two-point discrimination test. The error was greater at 5% than at 20% contraction intensity (p < 0.001), and in older [56.5 (32.2)%; mean (SD)] than in young adults [33.5 (13.6)%] at 5% (p = 0.002) but not 20% target (p = 0.46). Tendon vibration had a greater effect at 5% than 20% contraction intensity, and in older [41.7 (32.4)%, p < 0.001] than young adults [20.0 (16.1)%]. Tactile acuity was lesser in older than young adults (p < 0.001). The results support the contribution of proprioception in the sense of force, and highlight a decrease in performance with ageing restricted to low-force contractions.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

Mélanie Henry is currently supported by a grant of the ‘‘Fonds National de la Recherche Scientifique – FRS-FNRS’’ (FNRS, 2017-J1812640-206591) of Belgium.

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Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by MH. The first draft of the manuscript was written by MH and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Stéphane Baudry.

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The authors declare no competing financial interests.

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Communicated by Francesco Lacquaniti, MD.

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221_2022_6311_MOESM1_ESM.docx

A table presenting the raw force data (in newtons) is available. Data will be made available on reasonable request (DOCX 16 KB)

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Henry, M., Eşrefoğlu, A., Duchateau, J. et al. Effects of tendon vibration and age on force reproduction task performed with wrist flexors. Exp Brain Res 240, 941–951 (2022). https://doi.org/10.1007/s00221-022-06311-z

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  • DOI: https://doi.org/10.1007/s00221-022-06311-z

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