PMID- 22676317
OWN - NLM
STAT- MEDLINE
DCOM- 20121205
LR  - 20220309
IS  - 1366-5847 (Electronic)
IS  - 0014-0139 (Linking)
VI  - 55
IP  - 8
DP  - 2012
TI  - Stochastic distribution of the required coefficient of friction for level 
      walking--an in-depth study.
PG  - 937-45
LID - 10.1080/00140139.2012.683880 [doi]
AB  - This study investigated the stochastic distribution of the required coefficient 
      of friction (RCOF) which is a critical element for estimating slip probability. 
      Fifty participants walked under four walking conditions. The results of the 
      Kolmogorov-Smirnov two-sample test indicate that 76% of the RCOF data showed a 
      difference in distribution between both feet for the same participant under each 
      walking condition; the data from both feet were kept separate. The results of the 
      Kolmogorov-Smirnov goodness-of-fit test indicate that most of the distribution of 
      the RCOF appears to have a good match with the normal (85.5%), log-normal (84.5%) 
      and Weibull distributions (81.5%). However, approximately 7.75% of the cases did 
      not have a match with any of these distributions. It is reasonable to use the 
      normal distribution for representation of the RCOF distribution due to its 
      simplicity and familiarity, but each foot had a different distribution from the 
      other foot in 76% of cases. PRACTITIONER SUMMARY: The stochastic distribution of 
      the required coefficient of friction (RCOF) was investigated for use in a 
      statistical model to improve the estimate of slip probability in risk assessment. 
      The results indicate that 85.5% of the distribution of the RCOF appears to have a 
      good match with the normal distribution.
FAU - Chang, Wen-Ruey
AU  - Chang WR
AD  - Liberty Mutual Research Institute for Safety, Hopkinton, MA 01748, USA. 
      wen.chang@libertymutual.com
FAU - Matz, Simon
AU  - Matz S
FAU - Chang, Chien-Chi
AU  - Chang CC
LA  - eng
PT  - Journal Article
DEP - 20120607
PL  - England
TA  - Ergonomics
JT  - Ergonomics
JID - 0373220
SB  - IM
MH  - Accidental Falls/*prevention & control
MH  - Adolescent
MH  - Adult
MH  - Aged
MH  - Female
MH  - *Friction
MH  - Humans
MH  - Logistic Models
MH  - Male
MH  - Middle Aged
MH  - Models, Statistical
MH  - Probability
MH  - Risk Assessment/*methods
MH  - Shoes
MH  - Statistics, Nonparametric
MH  - Stochastic Processes
MH  - Walking/*physiology
MH  - Young Adult
EDAT- 2012/06/09 06:00
MHDA- 2012/12/10 06:00
CRDT- 2012/06/09 06:00
PHST- 2012/06/09 06:00 [entrez]
PHST- 2012/06/09 06:00 [pubmed]
PHST- 2012/12/10 06:00 [medline]
AID - 10.1080/00140139.2012.683880 [doi]
PST - ppublish
SO  - Ergonomics. 2012;55(8):937-45. doi: 10.1080/00140139.2012.683880. Epub 2012 Jun 
      7.