I evaluated the contractions of the

I evaluated the contractions of the muscles of the lower extremities during baseballpitching using video imaging and simultaneous surface EMG. The subjects were 10 members of ahigh school baseball club and, for contrast, 10 students without any baseball club experience . Idivided their pitching movements into two phases determined with respect to the landing of the nonpivotleg. The EMG signal intensities over the 2 seconds prior to landing, and over the 2 secondsafter landing, were then integrated to give an EMG value to each phase. I then computed this valueas the % MMT. The abductor and adductor of the hip muscles of both lower extremities in theplayers were strongly contracted, especially the adductor. This finding was consistent with theobservation that pitching tends to lead to adductor muscle disorders. Strengthening the adductorand its antagonist abductor can therefore directly influence the capability for pitching, and canreduce the risk for the adductor disorders.

結果 (繁體中文) 1:

I evaluated the contractions of the muscles of the lower extremities during baseball
pitching using video imaging and simultaneous surface EMG. The subjects were 10 members of a
high school baseball club and, for contrast, 10 students without any baseball club experience . I
divided their pitching movements into two phases determined with respect to the landing of the nonpivot
leg. The EMG signal intensities over the 2 seconds prior to landing, and over the 2 seconds
after landing, were then integrated to give an EMG value to each phase. I then computed this value
as the % MMT. The abductor and adductor of the hip muscles of both lower extremities in the
players were strongly contracted, especially the adductor. This finding was consistent with the
觀察到的投球往往導致收肌症。加強收
，因此其拮抗劑展可以直接影響投球的能力，並能
減少對收症的風險。

結果 (繁體中文) 2:

我評估了棒球期間下肢肌肉的收縮
使用視頻成像和同步表面 EMG 進行俯仰。受試者是10名成員
高中棒球俱樂部，相反，10名學生沒有任何棒球俱樂部的經驗。Ⅰ
把他們的投球運動分成兩個階段，確定相對於非支點登陸
腿。EMG 信號強度在著陸前 2 秒和 2 秒內
著陸後，然後集成，為每個階段提供 EMG 值。然後，我計算此值
百分比 MMT。兩個下肢的臀部肌肉的誘拐器和加法器
球員被強烈簽約，特別是加法器。這一發現與
觀察，投球往往導致加法器肌肉紊亂。加強加法器
及其對手綁架者因此可以直接影響投球的能力，並可以
降低加法器紊亂的風險。

結果 (繁體中文) 3:

我評估了棒球時下肢肌肉的收縮
使用視頻成像和同步表面肌電的俯仰。受試者是
高中棒球俱樂部，相比之下，10個學生沒有任何棒球俱樂部的經驗。我
將它們的俯仰運動分成兩個階段
腿。著陸前2秒和2秒以上的肌電信號強度
著陸後，再進行積分，給每個階段一個肌電值。然後我計算出這個值
作為MMT的百分比。雙下肢臀肌外展肌和內收肌
運動員收縮得很厲害，尤其是內收肌。這個發現與
俯仰運動易導致內收肌紊亂的觀察。加强內收肌
囙此，它的拮抗誘拐者可以直接影響投球能力，並且可以
降低內收肌紊亂的風險。