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Related Experiment Video

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Sensorimotor Peripheral Nerve Function and Physical Activity in Older Men.

Brittney S Lange-Maia, Jane A Cauley, Anne B Newman

    Journal of Aging and Physical Activity
    |March 12, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Physical activity (PA) in older men is linked to better sensorimotor peripheral nerve (PN) function. Lower PA was associated with poorer nerve conduction and increased neuropathy symptoms, suggesting a pathway to disability.

    Keywords:
    agingmotor peripheral nervesensory peripheral nerve

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    Area of Science:

    • Gerontology
    • Neurology
    • Biomedical Engineering

    Background:

    • Sensorimotor peripheral nerve (PN) function is crucial for mobility and independence in older adults.
    • Physical activity (PA) is known to benefit overall health, but its specific impact on PN function in aging men requires further investigation.

    Purpose of the Study:

    • To investigate the association between sensorimotor PN function and levels of PA in a cohort of older men.
    • To identify specific PN measures that correlate with different types of PA.

    Main Methods:

    • Utilized data from the Osteoporotic Fractures in Men Study (MrOS) Pittsburgh site (n=328, age ~79 years).
    • Assessed PN function through peroneal motor and sural sensory nerve conduction tests (CMAP, SNAP), 1.4g/10g monofilament testing, and neuropathy symptom evaluation.
    • Quantified PA using the Physical Activity Scale for the Elderly (PASE) and SenseWear Armband, analyzing associations via ANOVA and multivariate linear regression.

    Main Results:

    • Better motor nerve latency was significantly associated with higher PASE scores (p < .01).
    • Men without neuropathy symptoms reported higher PASE scores compared to those with symptoms (p < .01).
    • Improved sural sensory nerve action potential (SNAP) amplitude correlated with slightly higher daily vigorous activity (p = .05).

    Conclusions:

    • Specific sensorimotor PN measures, including motor nerve latency and sensory nerve amplitude, are associated with PA levels in older men.
    • Poorer PN function and presence of neuropathy symptoms may be linked to reduced physical activity, indicating a potential mechanism contributing to functional decline and disability.