抄録
The aim of present study was to clarify the effects of Support level Nordic Walking（SNW） on lower extremity load reduction under uphill and load carriage conditions. Nine healthy and skilled Nordic walker, participated in this study as a subject. Walking （W） and SNW were conducted on a treadmill at 70 m/min under four trials, ①level walking with no load（BW）, ②20％ BW load in level walking, ③15％ grade walking with no load, and ④20％ BW load in 15％ grade walking. Stride length was controlled as same as level walking in all trials.
The pole ground reaction force during SNW in trials ③ and ④ were significantly higher than those in trials ① and ②. Heart rate（HR）and the electromyography（EMG） of the triceps brachii during SNW in trials ③ and ④ were higher than those during walking. In contrast, EMG of the trunk and lower extremity muscles was reduced. From these results, it was concluded that SNW reduces the recruitment of muscle fibers in the trunk and lower extremities by distributing energy consumption to the upper extremities.
https://ror.org/01w6wtk13 
