Improved balance control is an often-cited potential benefit for trampoline interventions. However, it is unknown whether the soft, elastic surface of a trampoline elicits different motion and neuromuscular strategies between adults and children. Therefore, the purpose of the study was to evaluate the center-of-mass (COM) dynamics and neuromuscular strategies for hopping on a mini-trampoline in adults and children. Fourteen children aged 7–12 years and 15 adults aged 18–35 years hopped on a stiff surface and a mini-trampoline. We evaluated the vertical displacement of COM and leg length, as well as the horizontal displacements between hops. We also assessed muscle activation from tibialis anterior, lateral gastrocnemius, biceps femoris, and vastus lateralis during time periods surround landing and estimated fatigue across the hopping cycles. Our results indicated both groups used spring-like leg dynamics to regulate the COM movement while hopping on a mini-trampoline. Children increased horizontal displacements between hops on the mini-trampoline, requiring greater muscle activation during time-periods associated with proprioceptive input. Moreover, children might not have developed the adult-like ability to appropriately adjust muscle pre-activation for feedforward control. Hopping on a mini-trampoline might increase proprioceptive information and postural demand compared to a stiff surface while reducing neuromuscular fatigue.

经常有人提到改善平衡控制是蹦床干预的潜在好处。然而，未知的是，蹦床的柔软弹性表面在成人和儿童之间是否会引发不同的运动和神经肌肉策略。因此，该研究的目的是评估成年人和儿童在小型蹦床上跳跃的质心（COM）动力学和神经肌肉策略。十四个7-12岁的儿童和15个18-35岁的成年人在坚硬的表面和迷你蹦床上跳跃。我们评估了COM和腿部长度的垂直位移，以及跃点之间的水平位移。我们还评估了围绕着陆的时间段内胫骨前，外侧腓肠肌，股二头肌和股外侧肌的肌肉激活情况，并估计了整个跳跃周期的疲劳程度。我们的结果表明，两组人都在跳迷你蹦床时使用类似弹簧的腿部动力学来调节COM运动。儿童会增加迷你蹦床上各跳之间的水平位移，从而需要在与本体感受输入相关的时间段内进行更大程度的肌肉激活。此外，儿童可能尚未发展出像成年人一样的能力，可以适当地调节肌肉的预激活以进行前馈控制。与僵硬的表面相比，在小型蹦床上跳跃可能会增加本体感受信息和姿势需求，同时减少神经肌肉疲劳。需要在与本体感受输入相关的时间段内进行更大程度的肌肉激活。此外，儿童可能尚未发展出像成年人一样的能力，可以适当地调节肌肉的预激活以进行前馈控制。与僵硬的表面相比，在小型蹦床上跳跃可能会增加本体感受信息和姿势需求，同时减少神经肌肉疲劳。在与本体感受输入相关的时间段内需要更多的肌肉激活。此外，儿童可能尚未发展出像成年人一样的能力，可以适当地调节肌肉的预激活以进行前馈控制。与僵硬的表面相比，在小型蹦床上跳跃可能会增加本体感受信息和姿势需求，同时减少神经肌肉疲劳。