Optimal stride frequencies in running at different speeds

During running at a constant speed, the optimal stride frequency (SF) can be derived from the u-shaped relationship between SF and heart rate (HR). Changing SF towards the optimum of this relationship is beneficial for energy expenditure and may positively change biomechanics of running. In the curr...

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Bibliographic Details
Published in:PloS one 2017-10, Vol.12 (10), p.e0184273-e0184273
Main Authors: van Oeveren, Ben T, de Ruiter, Cornelis J, Beek, Peter J, van Dieën, Jaap H
Format: Article
Language:English
Subjects:
Adult
Biology and Life Sciences
Biomechanics
Consumption
Curvature
Energy expenditure
Engineering and Technology
Female
Females
Fitness equipment
Gait
Heart rate
Humans
Injuries
Internet
Kinematics
Male
Males
Mathematical models
Medicine and Health Sciences
Optimization
Physiological aspects
Physiology
Runners (Sports)
Running
Stridor
Studies
Walking
Young Adult
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Summary:During running at a constant speed, the optimal stride frequency (SF) can be derived from the u-shaped relationship between SF and heart rate (HR). Changing SF towards the optimum of this relationship is beneficial for energy expenditure and may positively change biomechanics of running. In the current study, the effects of speed on the optimal SF and the nature of the u-shaped relation were empirically tested using Generalized Estimating Equations. To this end, HR was recorded from twelve healthy (4 males, 8 females) inexperienced runners, who completed runs at three speeds. The three speeds were 90%, 100% and 110% of self-selected speed. A self-selected SF (SFself) was determined for each of the speeds prior to the speed series. The speed series started with a free-chosen SF condition, followed by five imposed SF conditions (SFself, 70, 80, 90, 100 strides·min-1) assigned in random order. The conditions lasted 3 minutes with 2.5 minutes of walking in between. SFself increased significantly (p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0184273