Kwak Dong-Jick, Kim Kyung-Tae, Kang Gyu-Min, Park Yun-Jin, Lee Hae-Lim, Kim Myung-Ki
School of Global Sport Studies, Korea University, Sejong, Korea.
J Exerc Rehabil. 2019 Jun 30;15(3):414-418. doi: 10.12965/jer.1938226.113. eCollection 2019 Jun.
Nordic walking (NW) is a full body training that can be performed with special pole, and has been recognized as an effective out-door activity which can improve the strength of upper extremity. Most previous studies mainly analyzed the effect of NW on the strength of dominant (DN) hand-grip strength, however, a clear scientific examination is needed whether nondominant (NDN) extremity can also be ameliorated by the NW. Therefore, the aim of our study is to investigate the effectiveness of 8 weeks NW training on the NDN handgrip and shoulder strength in healthy middle-aged women. 29 subjects were randomly divided into three groups: Nordic walking group (NWG, n=10), brisk walking group (BWG, n=11), and control group (CG, n=8). Handgrip and shoulder strength were measured by the hand dynamometer and isokinetic machine. NW training was performed 3 times a week, and had 10-min warm-up, 40-min main program consisted of ALFA (Attention, Long arms, Flat poles, Adaptes) technique and Turbo walking, and 10-min cool-down. In handgrip strength of DN hand and the shoulder flexor strength in the both sides, NWG and BWG showed significantly higher value compared to CG. In the NDN hand, NWG also showed significantly higher strength compared to CG, however, there was no significant difference in the handgrip strength/weight among groups. In NDN shoulder extension, significantly higher improvement was found in NWG and BWG compared to that of CG. In conclusion, our study showed that NW can improve the strength of upper extremity in subjects, and can be better approach to improve the NDN handgrip strength than brisk walking method could.
北欧式健走（NW）是一种可借助特殊手杖进行的全身训练，已被公认为是一项能增强上肢力量的有效户外活动。以往大多数研究主要分析了北欧式健走对优势（DN）手握力的影响，然而，对于非优势（NDN）肢体是否也能通过北欧式健走得到改善，还需要进行明确的科学检验。因此，我们研究的目的是调查为期8周的北欧式健走训练对健康中年女性非优势手握力和肩部力量的有效性。29名受试者被随机分为三组：北欧式健走组（NWG，n = 10）、快走组（BWG，n = 11）和对照组（CG，n = 8）。使用握力计和等速运动仪测量手握力和肩部力量。北欧式健走训练每周进行3次，包括10分钟的热身、40分钟由ALFA（注意力、长臂、平杆、适应）技术和快速行走组成的主要训练项目以及10分钟的放松。在优势手的握力和双侧肩部屈肌力量方面，NWG和BWG组的值显著高于CG组。在非优势手上，NWG组的力量也显著高于CG组，然而，各组之间的握力/体重没有显著差异。在非优势肩伸展方面，NWG和BWG组的改善显著高于CG组。总之，我们的研究表明，北欧式健走可以提高受试者的上肢力量，并且在改善非优势手握力方面比快走方法更好。
