کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7375193 | 1480067 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Humans are able to self-paced constant running accelerations until exhaustion
ترجمه فارسی عنوان
انسان ها تا زمان خستگی توانایی شتاب دادن به سرعت خود را دارند
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
چکیده انگلیسی
Although it has been experimentally reported that speed variations is the optimal way of optimizing his pace for achieving a given distance in a minimal time, we still do not know what the optimal speed variations (i.e. accelerations) are. At first, we have to check the hypothesis that human is able to accurately self-pacing its acceleration and this even in a state of fatigue during exhaustive self-pacing ramp runs. For that purpose, 3 males and 2 females middle-aged, recreational runners ran, in random order, three exhaustive acceleration trials. We instructed the five runners to perform three self-paced acceleration trials based on three acceleration intensity levels: ”soft”, ”medium” and ”hard”. We chose a descriptive modelling approach to analyse the behaviour of the runners. Once we knew that the runners were able to perceive three acceleration intensity levels, we proposed a mean-reverting process (Ornstein-Uhlenbeck) to describe those accelerations: dat=âθ(atâa)dt+ÏdWt where a is the mean acceleration, at is the measured acceleration at each time interval t, θ the ability of the runner to correct the variations around a mean acceleration and Ï the human induced variations. The goodness-of-fit of the Ornstein-Uhlenbeck process highlights the fact that humans are able to maintain a constant acceleration and are able to precisely regulate their acceleration (regardless of its intensity) in a run leading to exhaustion in the range from 1 min 36 s to 20 min.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 506, 15 September 2018, Pages 290-304
Journal: Physica A: Statistical Mechanics and its Applications - Volume 506, 15 September 2018, Pages 290-304
نویسندگان
Véronique Billat, Nicolas J-B. Brunel, Thomas Carbillet, Stéphane Labbé, Adeline Samson,