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• W2768318982 abstract "Perception of limb and body positions is known as proprioception. Sensory feedback, especially from proprioceptive receptors, is essential for motor control. Aging is associated with a decline in position sense at proximal joints, but there is inconclusive evidence of distal joints being equally affected by aging. In addition, there is initial evidence that physical activity attenuates age-related decline in proprioception. Our objectives were, first, to establish wrist proprioceptive acuity in a large group of seniors and compare their perception to young adults, and second, to determine if specific types of training or regular physical activity are associated with preserved wrist proprioception. We recruited community-dwelling seniors (n=107, mean age, 70±5y, range, 65-84y) without cognitive decline (Mini Mental State Examination-brief version ≥13/16) and young adult students (n=51, mean age, 20±1y, range, 19-26y). Participants performed contralateral and ipsilateral wrist position sense matching tasks with a bimanual wrist manipulandum to a 15 degrees flexion reference position. Systematic error or proprioceptive bias was computed as the mean difference between matched and reference position. The respective standard deviation over 5 trials constituted a measure of random error or proprioceptive precision. Current levels of physical activity and previous sport, musical, or dance training were obtained through a questionnaire. We employed longitudinal mixed effects linear models to calculate the effects of trial number, sex, type of matching task, and age on wrist proprioceptive bias and precision. The main results were that relative proprioceptive bias was greater in older when compared to young adults (mean difference: 36% ipsilateral, 88% contralateral, p<0.01). Proprioceptive precision for contralateral but not for ipsilateral matching was smaller in older than in young adults (mean difference: 38% contralateral, p<0.01). Longer years of dance training were associated with smaller bias during ipsilateral matching (p<0.01). Other types of training or physical activity levels did not affect bias or precision. Our findings demonstrate that aging is associated with decline in proprioceptive bias in distal arm joints, but age does not negatively affect proprioceptive precision. Further, specific types of long-term dance related training may attenuate age-related decline in proprioceptive bias." @default.
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• W2768318982 date "2017-11-21" @default.
• W2768318982 modified "2023-10-16" @default.
• W2768318982 title "Age-Related Decline of Wrist Position Sense and its Relationship to Specific Physical Training" @default.
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• W2768318982 doi "https://doi.org/10.3389/fnhum.2017.00570" @default.
• W2768318982 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5702425" @default.
• W2768318982 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29209188" @default.
• W2768318982 hasPublicationYear "2017" @default.
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