Aim: Right-handed young adults perform target-matching tasks more accurately with the non-dominant (ND) compared to the dominant (D) limb, but it is unclear if age affects this disparity. We determined if age affects target-matching asymmetry in right-side dominant healthy adults. Method: Young (n = 12, age: 23.6 y, 6 females) and older (n = 12; age: 75.1 y, 7 females) adults performed a passive joint position-matching task with the D and ND leg in a randomized order. Result: Age affected absolute, constant, and variable knee JPS errors but, contrary to expectations, it did not affect target-matching asymmetries between the D and ND knees. However, older participants tended to underestimate while young subjects overestimated the target angles. Moreover, older as compared to young subjects performed the target-matching task with higher variability. Conclusion: Altogether, age seems to affect passive knee target-matching behaviour in right-side dominant healthy adults. The present data indicate that healthy aging produces age-specific modifications in passive joint position sense.

中文翻译：

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健康成年人的膝盖关节位置感知的特定年龄修饰。

目的：惯用右手的年轻人与非惯性（D）肢相比，非惯性（ND）更准确地执行目标匹配任务，但是尚不清楚年龄是否会影响这种差异。我们确定年龄是否会影响右侧优势健康成年人的目标匹配不对称性。方法：年轻（n = 12，年龄：23​​.6岁，女性6岁）和年龄较大（n = 12；年龄：75.1岁，女性7岁）成人以随机的方式对D和ND腿进行被动关节位置匹配任务。结果：年龄影响了绝对，恒定和可变膝盖JPS错误，但与预期相反，它没有影响D和ND膝盖之间的目标匹配不对称性。但是，年长的参与者倾向于低估目标，而年轻的参与者则倾向于高估目标角度。此外，与年轻受试者相比，年龄较大的受试者具有较高的可变性进行目标匹配任务。结论：总的来说，年龄似乎会影响右侧优势健康成年人的被动膝靶匹配行为。目前的数据表明，健康的衰老会在被动的关节位置意义上产生特定年龄的改变。