کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4055802 1603847 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface effects on dynamic stability and loading during outdoor running using wireless trunk accelerometry
ترجمه فارسی عنوان
اثرات سطحی بر پایداری و بارگیری پویا در طول فعالیت در فضای باز با استفاده از شتاب سنج بیسیم
کلمات کلیدی
راه رفتن، سطح در حال اجرا، شتاب سنج تنه پایداری پویا، بارگذاری پویا
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
چکیده انگلیسی


• Wireless trunk-accelerometry assessed running mechanics on three outdoor surfaces.
• Dynamic stability was unaltered between concrete and synthetic running surface.
• ML inter-step and inter-stride regularity decreased on woodchips versus concrete.
• VT impact and AP breaking trunk accelerations were unaffected by any surface.
• Training status and running speed did not confound running surface effects.

Despite frequently declared benefits of using wireless accelerometers to assess running gait in real-world settings, available research is limited. The purpose of this study was to investigate outdoor surface effects on dynamic stability and dynamic loading during running using tri-axial trunk accelerometry. Twenty eight runners (11 highly-trained, 17 recreational) performed outdoor running on three outdoor training surfaces (concrete road, synthetic track and woodchip trail) at self-selected comfortable running speeds. Dynamic postural stability (tri-axial acceleration root mean square (RMS) ratio, step and stride regularity, sample entropy), dynamic loading (impact and breaking peak amplitudes and median frequencies), as well as spatio-temporal running gait measures (step frequency, stance time) were derived from trunk accelerations sampled at 1024 Hz. Results from generalized estimating equations (GEE) analysis showed that compared to concrete road, woodchip trail had several significant effects on dynamic stability (higher AP ratio of acceleration RMS, lower ML inter-step and inter-stride regularity), on dynamic loading (downward shift in vertical and AP median frequency), and reduced step frequency (p < 0.05). Surface effects were unaffected when both running level and running speed were added as potential confounders. Results suggest that woodchip trails disrupt aspects of dynamic stability and loading that are detectable using a single trunk accelerometer. These results provide further insight into how runners adapt their locomotor biomechanics on outdoor surfaces in situ.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gait & Posture - Volume 48, July 2016, Pages 220–225
نویسندگان
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