Sure. It can reduce the forces a lot, it can change your running posture a little, it may reduce injuries.

当然，它可以减少许多力，它可以改变您的跑姿少许，它可能降低受伤风险。

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Shoulders Shoulders play an important role in keeping your upper body relaxed while you run, which is critical to maintaining efficient running posture.

当您在奔跑时，肩膀对保持您上半身的松弛非常重要，保持上半身的松弛又是维持高效率跑步姿势的关键。

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Good posture can improve your running efficiency and decrease injury risk.

保持良好的形体合一提高你跑步的效率，降低受伤几率。

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"Our study shows that the heel-down posture increases the economy of walking but not the economy of running, " says Carrier.

CNN: Running debate: Bare or in shoes?