Muscular and metabolic responses to different Nordic walking techniques, when style matters.
Muscular and metabolic responses to different Nordic walking techniques, when style matters.
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DOI：
10.1371/journal.pone.0195438
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Schena F
中科院分区：
文献类型：
--
作者：
Pellegrini B;Boccia G;Zoppirolli C;Rosa R;Stella F;Bortolan L;Rainoldi A;Schena F
由于撑杆动作和上半身的参与，北欧步行（NW）有额外的健康效益，相对于传统的步行。本研究的目的是评估NW在肌肉激活和代谢反应方面的差异，在NW教练建议的技术下进行，并在上肢和极点的移动方式上进行一些修改。10名NW教练自愿在跑步机上以5.5 km•h-1的速度在五种情况下行走：步行(W)，北欧步行（NW），北走（NWweak），上肢伸直移动肩膀（NWshoulder）以及肘关节屈伸模式和肩膀冻结（NWelbow）。测量了翻杆力、身体节段和杆状运动、上半身和下半身肌肉激活以及代谢参数。与建议的NW技术相比，所有改良的NW技术引起的肌肉激活和代谢反应都较低（P < 0.05）。所有的NW技术都比w引起更高的肌肉激活和代谢反应，NWweak观察到的所有参数都低于NW。肩周炎的主要特征是肩伸肌激活减少，三角肌前肌激活增加。下肱三头肌激活和相对于NW的推进极化作用减少，NWelbow也导致了更短的步数。北欧步行教练，运动技术人员和实践者应该意识到，任何偏离通常建议的技术可能会导致较低的收益。然而，值得注意的是，任何带杆子的步行技术都比步行引起更高的代谢反应和肌肉激活。
Due to poling action and upper body engagement, Nordic walking (NW) has additional health benefits with respect to conventional walking. The aim of this study was to evaluate the differences in muscle activation and metabolic responses between NW, performed with the technique suggested by NW instructors, and with some modifications in the way to move upper limb and poles. Ten NW instructors volunteered to walk on a treadmill at 5.5 km•h-1 in five conditions: walking (W), Nordic walking (NW), NW with a weak poling action (NWweak), with straight-upper limbs moving the shoulders (NWshoulder) and with elbow flexion-extension pattern and shoulder freezed (NWelbow). Poling forces, body segments and poles movement, upper and lower body muscle activation, as well as metabolic parameters were measured.All modified NW techniques elicited lower muscular activation and metabolic responses with respect to the suggested NW technique (P < 0.05). All NW techniques elicited higher muscular activation and metabolic responses than W. All parameters observed with the NWweak were lower than NW. A decreased activation of shoulder extensor muscles and increased activation of anterior deltoid muscle were the main features of NWshoulder. Lower triceps brachii muscle activation and reduced propulsive poling action with respect to NW were seen for NWelbow, resulting also in shorter steps.Nordic walking instructors, sport technicians and practitioners should be aware that any deviation from the technique usually suggested might lead to lower benefits. However it is worth to note that any walking technique with poles elicits higher metabolic responses and muscular activation than walking.
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影响因子：
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