BACKGROUND: Inclined walking is associated with multiple musculoskeletal benefits and is considered a therapeutic exercise. Various patterns of increased and decreased muscle activation with inclined surfaces have been observed in normal muscles, with more focus on the proximal lower limb musculature. OBJECTIVE: The aim of this study was to assess the differences in electromyographic activation of gastrocnemius, soleus, and tibialis anterior at various inclined surfaces during gait. METHODS: Fourteen healthy male participants aged between 17–30 years walked at a self-selected speed at motor driven treadmill on 0, 2 and 4 degrees of inclination. EMG activity of the muscles was recorded using the Delsys Trigno surface EMG system. RESULTS: Results showed that muscular activation of tibialis anterior significantly decreased with increase in the level of inclination (p< 0.05). However, soleus, gastrocnemius medialis and gastrocnemius lateralis showed no significant differences (p> 0.05) in their muscular activation, and no noticeable trends were found. Furthermore, no significant difference was found between all the muscles at ground level and inclined level 2 and 4. CONCLUSION: These differences in activation patterns found in distal extremity can be useful for designing rehabilitation protocols in sports training and for patients with neurological and musculoskeletal pathologies.

中文翻译：

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表面倾斜度对步态期间腓肠肌、比目鱼肌和胫骨前肌激活的影响

背景：倾斜行走与多种肌肉骨骼益处相关，被认为是一种治疗性运动。在正常肌肉中观察到倾斜表面肌肉活动增加和减少的各种模式，更多地关注近端下肢肌肉组织。目的：本研究的目的是评估步态期间不同倾斜表面的腓肠肌、比目鱼肌和胫骨前肌肌电图激活的差异。方法：14 名年龄在 17-30 岁之间的健康男性参与者以自行选择的速度在倾斜度为 0、2 和 4 的电动跑步机上行走。使用 Delsys Trigno 表面 EMG 系统记录肌肉的 EMG 活动。结果：结果表明，随着倾斜水平的增加，胫骨前肌的肌肉活动显着降低 (p < 0.05)。然而，比目鱼肌、腓肠肌内侧肌和腓肠肌外侧肌在肌肉激活方面没有显着差异 (p > 0.05)，也没有发现明显的趋势。此外，在地面水平和倾斜水平 2 和 4 的所有肌肉之间没有发现显着差异。结论：在远端肢体中发现的这些激活模式差异可用于设计运动训练中的康复方案以及神经和肌肉骨骼病变患者. 并且没有发现明显的趋势。此外，在地面水平和倾斜水平 2 和 4 的所有肌肉之间没有发现显着差异。结论：在远端肢体中发现的这些激活模式差异可用于设计运动训练中的康复方案以及神经和肌肉骨骼病变患者. 并且没有发现明显的趋势。此外，在地面水平和倾斜水平 2 和 4 的所有肌肉之间没有发现显着差异。结论：在远端肢体中发现的这些激活模式差异可用于设计运动训练中的康复方案以及神经和肌肉骨骼病变患者.