PMID- 30772623
OWN - NLM
STAT- MEDLINE
DCOM- 20191118
LR  - 20191118
IS  - 1879-2219 (Electronic)
IS  - 0966-6362 (Linking)
VI  - 69
DP  - 2019 Mar
TI  - Effects of age-related changes in step length and step width on the required 
      coefficient of friction during straight walking.
PG  - 195-201
LID - S0966-6362(18)31746-6 [pii]
LID - 10.1016/j.gaitpost.2019.02.005 [doi]
AB  - BACKGROUND: Slipping is one of the leading causes of falls among older adults. 
      Older adults are considered to walk with a small anteroposterior (AP) component 
      and a large mediolateral (ML) component of the required coefficient of friction 
      (RCOF) owing to a short step length and a wide step width, respectively. However, 
      limited information is available. RESEARCH QUESTION: What are the effects of 
      aging on the resultant RCOF (RCOF(res)) and its ML (RCOF(ML)) and AP (RCOF(AP)) 
      components during straight walking? METHODS: We used the kinetic and kinematic 
      data of 188 participants aged 20-77 years from a publicly available database 
      (National Institute of Advanced Industrial Science and Technology Gait Database 
      2015). The participants were divided into the following three groups: young group 
      (n = 56; age range, 20-34 years), middle-aged group (n = 50; age range, 35-64 
      years), and old group (n = 82; age range, 65-77 years). RESULTS: The RCOF(res) 
      and RCOF(AP) were lower in the old group than in the other groups, indicating a 
      lower slip risk in this group. However, the RCOF(ML) was higher and the step 
      width was greater in the old group than in the other groups. The higher RCOF(ML) 
      and lower RCOF(AP) in the old group might be associated with slips in a more 
      lateral direction. SIGNIFICANCE: Our findings suggest that older adults have a 
      high risk of slipping in a more lateral direction. Shoes with high-slip 
      resistance in the lateral direction are recommended to prevent hazardous lateral 
      slips among older adults.
CI  - Copyright (c) 2019 Elsevier B.V. All rights reserved.
FAU - Yamaguchi, Takeshi
AU  - Yamaguchi T
AD  - Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, 
      Aoba-ku, Sendai, Miyagi, 980-8579, Japan; Graduate School of Biomedical 
      Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, 
      980-8579, Japan. Electronic address: yamatake@gdl.mech.tohoku.ac.jp.
FAU - Masani, Kei
AU  - Masani K
AD  - Institute of Biomaterials and Biomedical Engineering, University of Toronto, 
      Toronto, Ontario, Canada; Lyndhurst Centre, Toronto Rehabilitation 
      Institute-University Health Network, Toronto, Ontario, Canada.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20190208
PL  - England
TA  - Gait Posture
JT  - Gait & posture
JID - 9416830
SB  - IM
MH  - Accidental Falls/prevention & control
MH  - Adult
MH  - Aged
MH  - Aging/*physiology
MH  - Biomechanical Phenomena
MH  - Databases, Factual
MH  - Female
MH  - Friction/*physiology
MH  - Gait/*physiology
MH  - Humans
MH  - Kinetics
MH  - Male
MH  - Middle Aged
MH  - Risk
MH  - Walking/physiology
MH  - Young Adult
OTO - NOTNLM
OT  - aging
OT  - ground reaction forces
OT  - required coefficient of friction
OT  - slips and falls
EDAT- 2019/02/18 06:00
MHDA- 2019/11/19 06:00
CRDT- 2019/02/18 06:00
PHST- 2018/10/26 00:00 [received]
PHST- 2018/12/11 00:00 [revised]
PHST- 2019/02/07 00:00 [accepted]
PHST- 2019/02/18 06:00 [pubmed]
PHST- 2019/11/19 06:00 [medline]
PHST- 2019/02/18 06:00 [entrez]
AID - S0966-6362(18)31746-6 [pii]
AID - 10.1016/j.gaitpost.2019.02.005 [doi]
PST - ppublish
SO  - Gait Posture. 2019 Mar;69:195-201. doi: 10.1016/j.gaitpost.2019.02.005. Epub 2019 
      Feb 8.