PMID- 22409168
OWN - NLM
STAT- MEDLINE
DCOM- 20120709
LR  - 20220309
IS  - 1366-5847 (Electronic)
IS  - 0014-0139 (Linking)
VI  - 55
IP  - 3
DP  - 2012
TI  - Comparison of different methods to extract the required coefficient of friction 
      for level walking.
PG  - 308-15
LID - 10.1080/00140139.2011.642008 [doi]
AB  - The required coefficient of friction (RCOF) is an important predictor for slip 
      incidents. Despite the wide use of the RCOF there is no standardised method for 
      identifying the RCOF from ground reaction forces. This article presents a 
      comparison of the outcomes from seven different methods, derived from those 
      reported in the literature, for identifying the RCOF from the same data. While 
      commonly used methods are based on a normal force threshold, percentage of stance 
      phase or time from heel contact, a newly introduced hybrid method is based on a 
      combination of normal force, time and direction of increase in coefficient of 
      friction. Although no major differences were found with these methods in more 
      than half the strikes, significant differences were found in a significant 
      portion of strikes. Potential problems with some of these methods were identified 
      and discussed and they appear to be overcome by the hybrid method. PRACTITIONER 
      SUMMARY: No standard method exists for determining the required coefficient of 
      friction (RCOF), an important predictor for slipping. In this study, RCOF values 
      from a single data set, using various methods from the literature, differed 
      considerably for a significant portion of strikes. A hybrid method may yield 
      improved results.
FAU - Chang, Wen-Ruey
AU  - Chang WR
AD  - Liberty Mutual Research Institute for Safety, 71 Frankland Road, Hopkinton, MA 
      01748, USA. Wen.Chang@LibertyMutual.com
FAU - Chang, Chien-Chi
AU  - Chang CC
FAU - Matz, Simon
AU  - Matz S
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - Ergonomics
JT  - Ergonomics
JID - 0373220
SB  - IM
MH  - Accidental Falls/prevention & control
MH  - Aged
MH  - Female
MH  - Friction/*physiology
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Shoes
MH  - Task Performance and Analysis
MH  - *Walking
EDAT- 2012/03/14 06:00
MHDA- 2012/07/10 06:00
CRDT- 2012/03/14 06:00
PHST- 2012/03/14 06:00 [entrez]
PHST- 2012/03/14 06:00 [pubmed]
PHST- 2012/07/10 06:00 [medline]
AID - 10.1080/00140139.2011.642008 [doi]
PST - ppublish
SO  - Ergonomics. 2012;55(3):308-15. doi: 10.1080/00140139.2011.642008.