PMID- 33735824
OWN - NLM
STAT- MEDLINE
DCOM- 20210726
LR  - 20220503
IS  - 1879-2219 (Electronic)
IS  - 0966-6362 (Print)
IS  - 0966-6362 (Linking)
VI  - 86
DP  - 2021 May
TI  - Gait kinetics impact shoe tread wear rate.
PG  - 157-161
LID - S0966-6362(21)00091-6 [pii]
LID - 10.1016/j.gaitpost.2021.03.006 [doi]
AB  - BACKGROUND: Adequate footwear is an important factor for reducing the risk of 
      slipping; as shoe outsoles wear down, friction decreases, and slip and fall risk 
      increases. Wear theory suggests that gait kinetics may influence rate of tread 
      wear. RESEARCH QUESTION: Do the kinetics of walking (i.e., the shoe-floor force 
      interactions) affect wear rate? METHODS: Fourteen participants completed dry 
      walking trials during which ground reaction forces were recorded across different 
      types of shoes. The peak normal force, shear force, and required coefficient of 
      friction (RCOF) were calculated. Participants then wore alternating pairs of 
      shoes in the workplace each month for up to 24 months. A pedometer was used to 
      track the distance each pair of shoes was worn and tread loss was measured. The 
      wear rate was calculated as the volumetric tread loss divided by the distance 
      walked in the shoes. Three, mixed linear regression models were used to assess 
      the impact of peak normal force, shear force, and RCOF on wear rate. RESULTS: 
      Wear rate was positively associated with peak RCOF and with peak shear force, but 
      was not significantly related to peak normal forces. SIGNIFICANCE: The finding 
      that shear forces and particularly the peak RCOF are related to wear suggests 
      that a person's gait characteristics can influence wear. Therefore, individual 
      gait kinetics may be used to predict wear rate based on the fatigue failure shoe 
      wear mechanism.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Hemler, Sarah L
AU  - Hemler SL
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard Street, Pittsburgh, PA, 15213, USA. Electronic address: slh148@pitt.edu.
FAU - Sider, Jessica R
AU  - Sider JR
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard Street, Pittsburgh, PA, 15213, USA. Electronic address: jes235@pitt.edu.
FAU - Redfern, Mark S
AU  - Redfern MS
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard Street, Pittsburgh, PA, 15213, USA. Electronic address: mredfern@pitt.edu.
FAU - Beschorner, Kurt E
AU  - Beschorner KE
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard Street, Pittsburgh, PA, 15213, USA. Electronic address: beschorn@pitt.edu.
LA  - eng
GR  - R01 OH010940/OH/NIOSH CDC HHS/United States
GR  - R43 AR064111/AR/NIAMS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PT  - Research Support, U.S. Gov't, P.H.S.
DEP - 20210308
PL  - England
TA  - Gait Posture
JT  - Gait & posture
JID - 9416830
SB  - IM
MH  - Actigraphy
MH  - Adult
MH  - Female
MH  - Floors and Floorcoverings
MH  - Friction
MH  - Gait/*physiology
MH  - Healthy Volunteers
MH  - Humans
MH  - Male
MH  - *Shoes
MH  - Walking/*physiology
PMC - PMC8167927
MID - NIHMS1685640
OTO - NOTNLM
OT  - Fatigue failure
OT  - Gait kinetics
OT  - Required coefficient of friction
OT  - Shoe wear
OT  - Slips and falls
COIS- Conflict of interest statement The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2021/03/19 06:00
MHDA- 2021/07/27 06:00
PMCR- 2022/05/01
CRDT- 2021/03/18 20:24
PHST- 2020/08/28 00:00 [received]
PHST- 2020/12/21 00:00 [revised]
PHST- 2021/03/03 00:00 [accepted]
PHST- 2021/03/19 06:00 [pubmed]
PHST- 2021/07/27 06:00 [medline]
PHST- 2021/03/18 20:24 [entrez]
PHST- 2022/05/01 00:00 [pmc-release]
AID - S0966-6362(21)00091-6 [pii]
AID - 10.1016/j.gaitpost.2021.03.006 [doi]
PST - ppublish
SO  - Gait Posture. 2021 May;86:157-161. doi: 10.1016/j.gaitpost.2021.03.006. Epub 2021 
      Mar 8.