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On The Measurement of Running Style
Universität: Technische Universität München
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Jacobs Journal of Sports Medicine
On The Measurement of Running Style 1: Risks and Benefits in Transitioning To
Barefoot/Minimal Footwear Running
M. Daumer1* PhD, C. Kleinmond2 PhD, C. Stolle1 MSC, C. Lederer1 PhD, M. Hilgers3 MD, M. Walther4 MD
1SLCMSR e.V./The Human Motion Institute, Munich, Germany
2ClinProject Eurasburg, Germany
3Sports Medicine, Level One Orthopedics, Orlando, FL, USA
4Department of Foot and Ankle Surgery, Schoen Klinik Munich, Germany
*Corresponding author: Dr. Martin Daumer, SLCMSR e.V. The Human Motion Institute, Munich, Germany, Email: daumer@slcmsr.org
Received: 06-09-2015
Accepted: 07-15-2015
Published: 07-28-2015
Copyright: © 2015 Martin Daumer
Review Article
Cite this article: Daumer M. On The Measurement of Running Style 1: Risks and Benefits in Transitioning To Barefoot/Minimal Footwear Running. J J Sport Med. 2015, 2(3): 014.
Abstract
Background: The individual running style has an impact both on running performance and on running injury risk. The runner
aiming to improve his running style finds himself confronted with contradicting recommendations from the literature [1-8] and
there exist even smartphone apps, social platforms, video tools etc. claiming to coach the runner towards a healthier running
style. The goal of this paper is to present quantitative estimates for the risks and benefits in transitioning to barefoot/minimal
footwear running from our recent cross-sectional on-line study.
Methods: We designed and performed an on-line survey using in a community of minimal footwear/barefoot (mf/b) runners.
The sample consisted of runners who successfully switched to mf/b running, without a formal distinction between professionals
and amateurs.
The on-line survey was performed using Google forms; the raw data are publicly available under https://docs.google.com/
spreadsheets/d/19urx4eM-t9CgJEXQUOtHbax_fngP_5DBz5EZHzFSNAk/edit?pli=1#gid=0. All statistical analyses were per-
formed in R 3.1.2. [9]
Results: In total 226 runners filled out the questionnaire, 15 subjects were excluded from the analysis due to invalid data. From
this data set, only those subjects were included in the analysis who reported at least 50 km in each running phase (shod, transi-
tion, mf/b) (173 (82%) subjects, 137 male, 15-71 years of age [mean=40, sd = 9.8]). The mean numbers of injuries per 10.000
km in three phases where 8.0 [sd=16.2], 23.4 [sd = 48.8], and 3.5 [sd=15.7] respectively.
The variance of running related injuries was significantly increased during the transition period from shod running to mf/b and
the detailed analysis (different trends for mean and median) suggests that there is a subgroup of runners with highly increased
risk of injury during this phase.
The injury rate per km was markedly lower – about 50% - in mf/b than in shod running; this reduction of injuries however
should be considered with care due to possible selection bias.