Galamb K, Szilágyi B, Magyar O M, Hortobágyi T, Nagatomi R, Váczi M, Négyesi J
1 Pain Clinic , Budapest, Hungary.
2 Department of Movement, Human and Health Sciences, University of Rome , Rome, Italy.
Physiol Int. 2018 Sep 1;105(3):257-265. doi: 10.1556/2060.105.2018.3.22. Epub 2018 Oct 1.
Right- and left-side-dominant individuals reveal target-matching asymmetries between joints of the dominant and non-dominant upper limbs. However, it is unclear if such asymmetries are also present in lower limb's joints. We hypothesized that right-side-dominant participants perform knee joint target-matching tasks more accurately with their non-dominant leg compared to left-side-dominant participants.
Participants performed position sense tasks using each leg by moving each limb separately and passively on an isokinetic dynamometer.
Side-dominance affected (p < 0.05) knee joint absolute position errors only in the non-dominant leg but not in the dominant leg: right-side-dominant participants produced less absolute position errors (2.82° ± 0.72°) with the non-dominant leg compared to left-side-dominant young participants (3.54° ± 0.33°).
In conclusion, right-side-dominant participants tend to perform a target-matching task more accurately with the non-dominant leg compared to left-side-dominant participants. Our results extend the literature by showing that right-hemisphere specialization under proprioceptive target-matching tasks may be not evident at the lower limb joints.
右侧优势和左侧优势个体在优势上肢与非优势上肢关节之间表现出目标匹配不对称性。然而，尚不清楚这种不对称性是否也存在于下肢关节中。我们假设，与左侧优势参与者相比，右侧优势参与者用其非优势腿执行膝关节目标匹配任务时更准确。
参与者通过在等速测力计上分别被动移动每个肢体，用每条腿执行位置感知任务。
优势侧仅影响（p < 0.05）非优势腿的膝关节绝对位置误差，而不影响优势腿：与左侧优势年轻参与者（3.54°±0.33°）相比，右侧优势参与者非优势腿产生的绝对位置误差更小（2.82°±0.72°）。
总之，与左侧优势参与者相比，右侧优势参与者用非优势腿执行目标匹配任务往往更准确。我们的结果扩展了文献，表明在本体感觉目标匹配任务下右半球的专门化在下肢关节可能不明显。
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