Influence of age on the frequency characteristics of the soleus muscle response to Achilles tendon vibration during standing

Mildren, Robyn L.; Schmidt, Margot E; Eschelmuller, Gregg; Carpenter, Mark G.; Blouin, Jean‐Sébastien; Inglis, James

doi:10.1113/jp280324

Cited by 13 publications

(5 citation statements)

References 62 publications

(185 reference statements)

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“…These results should not rely on an increased sensitivity of the muscle spindle pathway to LV in older adults as previous work reported a reduction in LV effect on tendon reflex and Jendrassik manoeuvre in older compared with young adults (Burke et al 1996). Furthermore, Mildren et al (2020) recently showed a lesser soleus EMG activity in response to LV in older compared with young adults, which was interpreted as a reduction in muscle spindle sensitivity to LV. It should be mentioned that those results were obtained in plantar flexor muscles and could, therefore, differ from upper limb muscles, although no evidence supports such a limb-related difference.…”

Section: Local Vibration Exacerbates Force Reproduction Error In Olde...mentioning

confidence: 57%

“…It should be mentioned that those results were obtained in plantar flexor muscles and could, therefore, differ from upper limb muscles, although no evidence supports such a limb-related difference. Accordingly, the greater LV effect on the force reproduction performance in older adults likely reflects an age-related alteration in the processing of the proprioceptive signal (Goble et al 2009(Goble et al , 2011Mildren et al 2020), which should impair the ability to discriminate and process the genuine proprioceptive signal originating from the muscle contraction from those arising from LV. This could be worsened by a possible age-related decrease in the signal-to-noise ratio within the central nervous system (Boisgontier and Swinnen 2015).…”

Section: Local Vibration Exacerbates Force Reproduction Error In Olde...mentioning

confidence: 99%

“…Based on the assumption of a contribution of proprioceptive signals on force reproduction performance, we expected a poorer performance with LV. The decline in the integration of the proprioceptive signal with ageing (Goble et al 2011(Goble et al , 2009Mildren et al 2020) should alter the performance in the force reproduction task in older adults, and make more challenging the discrimination and processing of the genuine proprioceptive signals originating from the muscle contraction from those arising from LV. Accordingly, we expected that LV should have a larger effect in older than young adults.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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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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Section: Local Vibration Exacerbates Force Reproduction Error In Olde...mentioning

confidence: 57%

Section: Local Vibration Exacerbates Force Reproduction Error In Olde...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…The chronic microinjury of spinal proprioceptive Piezo2 and the aging process together could accelerate the imbalance of the aforementioned alignment process and could lead to osteoporotic fractures, in parallel with the imbalance of osteoblastic and osteoclastic activity [ 43 ]. It is important to remark that proprioceptive sensory function is progressively diminished by aging [ 44 ].…”

Section: Quadric Injury Phasementioning

confidence: 99%

Osteoporosis in Light of a New Mechanism Theory of Delayed Onset Muscle Soreness and Non-Contact Anterior Cruciate Ligament Injury

Sonkodi

Bardoni

Poór

2022

IJMS

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Osteoporosis is a disorder, with a largely unknown pathomechanism, that is often marked as a “silent thief”, because it usually only becomes undisguised when fractures occur. This implies that the pathological damage occurs earlier than the sensation of pain. The current authors put forward a non-contact injury model in which the chronic overloading of an earlier autologously microinjured Piezo2 ion channel of the spinal proprioceptor terminals could lead the way to re-injury and earlier aging in a dose-limiting and threshold-driven way. As a result, the aging process could eventually lead the way to the metabolic imbalance of primary osteoporosis in a quad-phasic non-contact injury pathway. Furthermore, it is emphasised that delayed onset muscle soreness, non-contact anterior cruciate injury and osteoporosis could have the same initiating proprioceptive non-contact Piezo2 channelopathy, at different locations, however, with different environmental risk factors and a different genetic predisposition, therefore producing different outcomes longitudinally. The current injury model does not intend to challenge any running pathogenic theories or findings, but rather to highlight a principal injury mechanism.

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“…These data support the assertion that soleus and tibialis anterior afferent and/or efferent pathways might be differently affected by ageing. Also, age-related decreases in vibration-electromyogram coherence, response gain, response amplitude, and scaling of the soleus response to Achilles tendon stimuli have been shown (Mildren et al, 2020), indicating impaired proprioceptive feedback from soleus. The different functional roles of soleus and tibialis anterior in daily tasks should also be considered when interpreting the present data.…”

Section: Experiments 1 -Estimates Of Pic Neuromodulationmentioning

confidence: 99%

Facilitation-inhibition control of motor neuronal persistent inward currents in young and older adults

Orssatto

Fernandes

Blazevich

et al. 2022

Preprint

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A well-coordinated control of motor neuronal persistent inward currents (PICs) via diffuse neuromodulation and local inhibition is essential to ensure motor units discharge at required times and frequencies. Current best estimates indicate that PICs are reduced in older adults; however, it is not yet known whether PIC facilitation-inhibition control is also altered with ageing. We investigated the responses of PICs to i) a remote handgrip contraction, which is believed to diffusely increase serotonergic input onto motor neurones, and ii) tendon vibration of the antagonist muscle, which elicits reciprocal inhibition, in both young and older adults. High-density surface electromyograms were collected from soleus and tibialis anterior of 18 young and 26 older adults during triangular-shaped plantar and dorsiflexion contractions to 20% (handgrip experiments) and 30% (vibration experiments) of maximum torque (rise-decline rate of 2%/s). The paired-motor-unit analysis was used to calculate ∆F, which is assumed proportional to PICs strength. ΔF increased in both soleus (0.55pps, 16.0%) and tibialis anterior (0.42pps, 11.4%) during the handgrip contraction independent of age. Antagonist muscle tendon vibration reduced ΔF in soleus (0.28pps, 12.6%), independent of age, but less reduction was observed in older (0.42pps, 10.7%) than young adults (0.72pps, 17.8%) in tibialis anterior. Our data indicate a preserved ability of older adults to amplify PICs following a remote handgrip contraction, during which increased serotonergic input onto the motor neurones is expected, in both soleus and tibialis anterior. However, PIC deactivation in response to reciprocal inhibition was impaired with ageing in tibialis anterior yet preserved in soleus.

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Influence of age on the frequency characteristics of the soleus muscle response to Achilles tendon vibration during standing

Cited by 13 publications

References 62 publications

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

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

Osteoporosis in Light of a New Mechanism Theory of Delayed Onset Muscle Soreness and Non-Contact Anterior Cruciate Ligament Injury

Facilitation-inhibition control of motor neuronal persistent inward currents in young and older adults

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