PMID- 31780121
OWN - NLM
STAT- MEDLINE
DCOM- 20201111
LR  - 20201111
IS  - 1873-2380 (Electronic)
IS  - 0021-9290 (Linking)
VI  - 99
DP  - 2020 Jan 23
TI  - Characterizing the shoe-rung friction requirements during ladder climbing.
PG  - 109507
LID - S0021-9290(19)30761-4 [pii]
LID - 10.1016/j.jbiomech.2019.109507 [doi]
AB  - Ladder slip and falls cause negative financial and health impacts due to their 
      severity and frequency. However, frictional requirements of climbing, which 
      presumably influence slip risk, are unknown. The purpose of this study was to 
      quantify frictional requirements during climbing at different ladder angles. The 
      required coefficient of friction (RCOF) was calculated during ladder climbing and 
      assessed for three ladder angles (75.5 degrees , 82.8 degrees , and 90 degrees ). Data was collected from 
      10 participants at each angle. Kinetic data and kinematic data of the climber's 
      shoe was collected and used to map friction and normal forces to the shoe. These 
      forces were then used to calculate the RCOF. The RCOF and friction force at 90 degrees  
      was higher than at lower angles (75.5 degrees  and 82.8 degrees ). RCOF was correlated with shoe 
      angle and body angle supporting both the relevance of shoe orientation and body 
      position to slip risk. This study suggests that frictional requirements of ladder 
      climbing are dependent on ladder angle, shoe orientation, and body angle.
CI  - Copyright (c) 2019 Elsevier Ltd. All rights reserved.
FAU - Martin, Ellen R
AU  - Martin ER
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard St., Pittsburgh, PA 15213, United States. Electronic address: 
      elm155@pitt.edu.
FAU - Pliner, Erika M
AU  - Pliner EM
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard St., Pittsburgh, PA 15213, United States. Electronic address: 
      emp95@pitt.edu.
FAU - Beschorner, Kurt E
AU  - Beschorner KE
AD  - Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 
      Bayard St., Pittsburgh, PA 15213, United States. Electronic address: 
      beschorn@pitt.edu.
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20191114
PL  - United States
TA  - J Biomech
JT  - Journal of biomechanics
JID - 0157375
SB  - IM
MH  - Accidental Falls
MH  - Adult
MH  - Biomechanical Phenomena
MH  - Female
MH  - *Friction
MH  - Humans
MH  - Male
MH  - Posture
MH  - *Shoes
MH  - Walking/*physiology
OTO - NOTNLM
OT  - Falls
OT  - Ladder climbing
OT  - Required Coefficient of Friction
OT  - Slipping
EDAT- 2019/11/30 06:00
MHDA- 2020/11/12 06:00
CRDT- 2019/11/30 06:00
PHST- 2019/05/21 00:00 [received]
PHST- 2019/11/08 00:00 [revised]
PHST- 2019/11/11 00:00 [accepted]
PHST- 2019/11/30 06:00 [pubmed]
PHST- 2020/11/12 06:00 [medline]
PHST- 2019/11/30 06:00 [entrez]
AID - S0021-9290(19)30761-4 [pii]
AID - 10.1016/j.jbiomech.2019.109507 [doi]
PST - ppublish
SO  - J Biomech. 2020 Jan 23;99:109507. doi: 10.1016/j.jbiomech.2019.109507. Epub 2019 
      Nov 14.