PMID- 31070107
OWN - NLM
STAT- MEDLINE
DCOM- 20210809
LR  - 20210809
IS  - 1752-6116 (Electronic)
IS  - 1476-3141 (Linking)
VI  - 20
IP  - 6
DP  - 2021 Sep
TI  - Analysis of required coefficient of friction in running and walking.
PG  - 768-780
LID - 10.1080/14763141.2019.1601251 [doi]
AB  - The popularity of running has increased over the past few years. However, just a 
      few studies in running have focused on the friction between surface and 
      shoe/foot. Changes in friction can affect aspects of human motion, such as 
      safety, motion pattern and efficiency among others. The aim was to investigate 
      the effects of cadence (walk, self-selected running and imposed-running), stance 
      sub-phases (absorption and propulsion) and footwear (barefoot and shod) on the 
      required coefficient of friction (RCOF) of regular runners. Twenty healthy 
      runners (12 males, 8 females, 29.4 +/- 4.9 years, 70.4 +/- 9.6 kg) participated in 
      this study. Two force plates were used to measure the ground reaction forces 
      (GRF) in order to calculate the RCOF for each condition and the stance phase was 
      divided in sub-phases. In walk, the RCOF was smaller in the absorption than in 
      propulsion phase (p < 0.001). Results evidenced effects of the cadence (p 
      < 0.001), stance sub-phases (p < 0.001) and footwear (p < 0.001) on the RCOF. 
      There was interaction effect in cadence with stance sub-phases (p < 0.001) and 
      footwear with stance sub-phases (p < 0.001). Our results show RCOF is influenced 
      by cadence and footwear condition in the absorption phase.
FAU - Vidal, Andrea Brugnoli
AU  - Vidal AB
AD  - Laboratory of Instrumentation for Biomechanics, Faculty of Physical Education, 
      University of Campinas, Campinas, Brazil.
FAU - Monezi, Lucas Antonio
AU  - Monezi LA
AD  - Laboratory of Instrumentation for Biomechanics, Faculty of Physical Education, 
      University of Campinas, Campinas, Brazil.
FAU - Sarro, Karine Jacon
AU  - Sarro KJ
AUID- ORCID: 0000-0002-9449-0228
AD  - Laboratory of Instrumentation for Biomechanics, Faculty of Physical Education, 
      University of Campinas, Campinas, Brazil.
FAU - Barros, Ricardo Machado Leite De
AU  - Barros RML
AD  - Laboratory of Instrumentation for Biomechanics, Faculty of Physical Education, 
      University of Campinas, Campinas, Brazil.
LA  - eng
PT  - Journal Article
DEP - 20190509
PL  - England
TA  - Sports Biomech
JT  - Sports biomechanics
JID - 101151352
SB  - IM
MH  - Adult
MH  - Biomechanical Phenomena
MH  - Female
MH  - Foot/*physiology
MH  - Friction/*physiology
MH  - Healthy Volunteers
MH  - Humans
MH  - Male
MH  - Running/*physiology
MH  - *Shoes
MH  - Walking/*physiology
MH  - Weight-Bearing/*physiology
OTO - NOTNLM
OT  - Biomechanics
OT  - RCOF
OT  - footwear
OT  - force plate
OT  - kinetics
EDAT- 2019/05/10 06:00
MHDA- 2021/08/10 06:00
CRDT- 2019/05/10 06:00
PHST- 2019/05/10 06:00 [pubmed]
PHST- 2021/08/10 06:00 [medline]
PHST- 2019/05/10 06:00 [entrez]
AID - 10.1080/14763141.2019.1601251 [doi]
PST - ppublish
SO  - Sports Biomech. 2021 Sep;20(6):768-780. doi: 10.1080/14763141.2019.1601251. Epub 
      2019 May 9.