کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7236770 1471097 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Muscle tension increases impact force but decreases energy absorption and pain during visco-elastic impacts to human thighs
ترجمه فارسی عنوان
تنش عضلانی نیروی ضربه را افزایش می دهد اما جذب انرژی و درد را در اثر تاثیرات الاستیک بر روی ران انسان کاهش می دهد
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
Despite uncertainty of its exact role, muscle tension has shown an ability to alter human biomechanical response and may have the ability to reduce impact injury severity. The aim of this study was to examine the effects of muscle tension on human impact response in terms of force and energy absorbed and the subjects' perceptions of pain. Seven male martial artists had a 3.9 kg medicine ball dropped vertically from seven different heights, 1.0-1.6 m in equal increments, onto their right thigh. Subjects were instructed to either relax or tense the quadriceps via knee extension (≥60% MVC) prior to each impact. F-scan pressure insoles sampling at 500 Hz recorded impact force and video was recorded at 1000 Hz to determine energy loss from the medicine ball during impact. Across all impacts force was 11% higher, energy absorption was 15% lower and time to peak force was 11% lower whilst perceived impact intensity was significantly lower when tensed. Whether muscle is tensed or not had a significant and meaningful effect on perceived discomfort. However, it did not relate to impact force between conditions and so tensing may alter localised injury risk during human on human type impacts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 67, 23 January 2018, Pages 123-128
نویسندگان
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