We investigated whether bilateral lower-limb control and leg dominance affect force control ability in 15 healthy young adults (9 males and 6 females, age =26.8 ± 4.1 years). Participants performed isometric ankle dorsiflexion force control tasks, matching a visual target (10% of maximal effort) as quickly and precisely as possible in ballistic and tonic tasks. Performance was evaluated using force error, force steadiness, amount of muscle activity of the tibialis anterior, and response time characteristics. Results showed no significant effects of leg dominance during both ballistic and tonic tasks, while bilateral condition resulted in significantly larger error, less force steadiness, compared to unilateral condition, and only during the tonic task. Consequently, bilateral control, specifically in tasks utilizing feedback control (i.e., tonic task) might affect force control ability, possibly because of the interhemispheric inhibition to meet bilateral task complexity and integrate afferent bilateral sensory information from both right and left legs.

中文翻译：

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年轻人脚踝背屈肌的力量控制：双侧控制和腿支配力的影响。

我们调查了双侧下肢控制和腿部支配度是否会影响15位健康的年轻人（9位男性和6位女性，年龄= 26.8±4.1岁）的力量控制能力。参与者执行了等距脚踝背屈力控制任务，在弹道和进补任务中尽可能快速，准确地匹配了视觉目标（最大努力的10％）。使用力误差，力的稳定性，胫骨前肌的活动量和响应时间特征来评估性能。结果表明，在弹道和进补任务中，支腿优势均无显着影响，而仅在进补任务中，与单侧情况相比，双侧情况导致明显更大的误差，较小的力量稳定性。因此，双边控制，特别是在利用反馈控制的任务中（即，