کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8798723 | 1603844 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical energy patterns in nordic walking: comparisons with conventional walking
ترجمه فارسی عنوان
الگوهای انرژی مکانیکی در پیاده روی نوردی: مقایسه با پیاده روی معمولی
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کلمات کلیدی
پیاده روی قطار، کارهای مکانیکی، مکانیزم پاندولی، راه رفتن، حرکت
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
ارتوپدی، پزشکی ورزشی و توانبخشی
چکیده انگلیسی
The use of poles during Nordic Walking (NW) actively engages the upper body to propel the body forward during walking. Evidence suggests that NW leads to a longer stride and higher speed, and sometimes to increased ground reaction forces with respect to conventional walking (W). The aim of this study was to investigate if NW is associated with different changes in body centre of mass (COM) motion and limbs energy patterns, mechanical work and efficiency compared to W. Eight experienced Nordic Walkers performed 5-min W and NW trials on a treadmill at 4 km hâ1. Steady state oxygen consumption and movements of body segments and poles were measured during each trial. We found greater fluctuation of kinetic (KE) and potential (PE) energy associated with COM displacement for NW compared to W. An earlier increase of KE for NW than for W, probably due to the propulsive action of poles, modified the synchronization between PE and KE oscillations so that a 10.9% higher pendular recovery between these energies was found in NW. The 10.2% higher total mechanical work found for NW was mainly due to the greater work required to move upper limbs and poles. NW was 20% less efficient and was metabolically more demanding than W, this difference could be ascribed to isometric contraction and low efficiency of upper musculature. Concluding, NW can be considered a highly dynamic gait, with distinctive mechanical features compared to conventional gait, due to pole propulsion and arm/pole swing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gait & Posture - Volume 51, January 2017, Pages 234-238
Journal: Gait & Posture - Volume 51, January 2017, Pages 234-238
نویسندگان
Barbara Pellegrini, Leonardo Alexandre Peyré-Tartaruga, Chiara Zoppirolli, Lorenzo Bortolan, Aldo Savoldelli, Alberto Enrico Minetti, Federico Schena,