Association of subjective ratings of slipperiness to heel displacement following contact with the floor.

Falls precipitated by slipping are listed among the leading causes of occupational injuries. Several factors may influence the risk of slips and falls, including perception of surface conditions. The current research examined the relationship between perceptions of slipperiness and slip distance at heel strike. The investigation compared objective and subjective measures for 31 participants ranging in age from 19 to 67 years old. Subjective slipperiness ratings for several floor surface and walking velocity conditions were obtained. Small slips were not generally perceived, but a uniform slip distance threshold could not be identified due to the large variability in ratings. The Pearson correlation coefficient between slip distance and subjective ratings for slides (30-100mm) was r=-0.17. Results indicate that subjective ratings should be used cautiously as a measure of slipperiness, partially due to possible underestimation of slipperiness and the variability in perceptions.

[1]  James L. Smith,et al.  Subjective assessment of floor slipperiness , 1993 .

[2]  Chien-Chi Chang,et al.  The use of a heel-mounted accelerometer as an adjunct measure of slip distance. , 2007, Applied ergonomics.

[3]  R E Schlegel,et al.  Coefficient of Friction and Subjective Assessment of Slippery Work Surfaces , 1992, Human factors.

[4]  H. Cohen,et al.  Perceptions of walking surface slipperiness under realistic conditions, utilizing a slipperiness rating scale , 1994 .

[5]  Mark S. Redfern,et al.  Kinematics of the foot during slips , 2002 .

[6]  Hester J Lipscomb,et al.  Injuries from slips and trips in construction. , 2006, Applied ergonomics.

[7]  M S Redfern,et al.  Biomechanics of slips , 2001, Ergonomics.

[8]  C. Anderson,et al.  Walkway Surfaces: Measurement of Slip Resistance , 1978 .

[9]  Yueng-Hsiang Huang,et al.  Objective and subjective measurements of slipperiness in fast-food restaurants in the USA and their comparison with the previous results obtained in Taiwan , 2006 .

[10]  T B Leamon,et al.  Occupational slips and falls: more than a trivial problem. , 1995, Ergonomics.

[11]  P. Succop,et al.  Effect of workers' shoe wear on objective and subjective assessment of slipperiness. , 1996, American Industrial Hygiene Association journal.

[12]  Yueng-Hsiang Huang,et al.  Assessing floor slipperiness in fast-food restaurants in Taiwan using objective and subjective measures. , 2004, Applied ergonomics.

[13]  D. P. Manning,et al.  Occupational slip, trip, and fall-related injuries can the contribution of slipperiness be isolated? , 2001, Ergonomics.

[14]  R Grönqvist,et al.  Slipperiness of the shoe-floor interface: comparison of objective and subjective assessments. , 1993, Applied ergonomics.

[15]  Tom B. Leamon.  The reduction of slip and fall injuries: Part II — The scientific basis (knowledge base) for the guide , 1992 .

[16]  L Strandberg,et al.  On accident analysis and slip-resistance measurement. , 1983, Ergonomics.

[17]  H.Harvey Cohen,et al.  Psychophysical assessment of the perceived slipperiness of floor tile surfaces in a laboratory setting , 1994 .

[18]  Kristina Kemmlert,et al.  Slips, trips and falls in different work groups--with reference to age and from a preventive perspective. , 2001 .

[19]  Lennart Strandberg,et al.  The dynamics of slipping accidents , 1981 .

[20]  M S Redfern,et al.  Predicting slips and falls considering required and available friction. , 1999, Ergonomics.

[21]  Keshia M Pollack,et al.  Nonfatal occupational injuries from slips, trips, and falls among older workers treated in hospital emergency departments, United States 1998. , 2004, American journal of industrial medicine.

[22]  Wen-Ruey Chang,et al.  Floor slipperiness measurement: friction coefficient, roughness of floors, and subjective perception under spillage conditions , 2004 .

[23]  R. Cham,et al.  Heel contact dynamics during slip events on level and inclined surfaces , 2002 .

[24]  R. Cham,et al.  Changes in gait when anticipating slippery floors. , 2002, Gait & Posture.

[25]  R Grönqvist,et al.  Human-centred approaches in slipperiness measurement , 2001, Ergonomics.

[26]  L Strandberg,et al.  The effect of conditions underfoot on falling and overexertion accidents. , 1985, Ergonomics.