Center of Bioengineering and Motor Science, University of Trento, Rovereto, Italy. helene.fi
Int J Sports Med. 2011 Jun;32(6):407-14. doi: 10.1055/s-0030-1268461. Epub 2011 Apr 6.
The effects of a Nordic walking (NW) program compared to those of a walking (W) program on physiological and perceptual variables in obese middle-aged women were investigated. Subjects (n=12 NW group, n=11 W group) trained over 12 weeks 3 times.week (-1). Body mass, body mass index (BMI), body fat, heart rate (HR), resting blood pressure, peak oxygen consumption (V˙O (2peak)) were measured before and after the training period. Moreover, HR, rating of perceived exertion (RPE) and adherence were recorded during all training sessions. After the training period body mass, body fat and diastolic blood pressure decreased in both groups (P<0.05) whereas V˙O (2peak) increased in the NW group (+3.7 ml.min (-1).kg (-1); P=0.005). During the training sessions, mean HR (P=0.021), HR at preferred walking speed (P=0.020) and % of time at high intensity (P=0.031) were higher in NW than in the W group. Finally, RPE was not influenced by the modality of exercise and NW group showed a higher rate of adherence (91±19% vs. 81±29%; P=0.011). To conclude, NW activity in obese women allows an increase in exercise intensity and adherence to a training program without increasing the perception of effort leading to enhanced aerobic capacity.
研究了北欧健走（NW）方案与步行（W）方案对肥胖中年女性生理和感知变量的影响。研究对象（NW 组 12 人，W 组 11 人）每周训练 3 次，共训练 12 周。在训练前后测量了体重、体重指数（BMI）、体脂、心率（HR）、静息血压、最大摄氧量（V˙O（2peak））。此外，在所有训练过程中还记录了 HR、感知用力程度（RPE）和依从性。训练后，两组体重、体脂和舒张压均降低（P<0.05），而 NW 组的 V˙O（2peak）增加（+3.7 ml.min（-1）.kg（-1）；P=0.005）。在训练过程中，NW 组的平均 HR（P=0.021）、最佳步行速度时的 HR（P=0.020）和高强度时间百分比（P=0.031）均高于 W 组。最后，运动方式对 RPE 没有影响，NW 组的依从率更高（91±19% vs. 81±29%；P=0.011）。综上所述，肥胖女性进行北欧健走活动可以提高运动强度和训练计划的依从性，而不会增加运动用力的感知，从而提高有氧能力。
