Fall risk analysis of construction workers using inertial measurement units: Validating the usefulness of the postural stability metrics in construction

Houtan Jebelli, Changbum R. Ahn, Terry L. Stentz

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Fall accidents are a leading cause of fatalities and injuries in the construction industry, and the loss of bodily stability is one of the primary factors contributing to such falls. Body stability can be analyzed by studying dynamic and postural stability, the assessment of which can ultimately improve worker safety on the job sites. Previous studies have introduced a method for assessing construction workers' gait stability, but there remains a need for a comprehensive method that can analyze the fall-risk of construction workers' in stationary postures. This study aims to test the usefulness of two metrics-velocity of the bodily center of pressure (COPv) and the resultant accelerometer (rAcc)-as predictors with which to measure workers' fall risk in stationary postures. A laboratory experiment was designed and conducted to gather IMU data and compare the resulting stability metrics (I-COPv and rAcc) with the postural stability observed while conducting the same activities on a forceplate (F-COPv). The experiment evaluated stationary-posture tasks with various fall-risk profiles: standing and squatting in different situations (e.g. wearing a loaded harness with a symmetric and an asymmetric load, and holding a toolbox). The analysis's results demonstrated a significant difference in I-COPv and rAcc values across different postures and tasks and also showed considerable correlations between the metrics from both the force plate and the IMU sensors. The results showed the distinguishing power of I-COPv and rAcc in measuring the fall risk of different construction workers' tasks in the stationary posture.

Original languageEnglish (US)
Pages (from-to)161-170
Number of pages10
JournalSafety Science
Volume84
DOIs
StatePublished - Apr 1 2016

Fingerprint

Units of measurement
Risk analysis
Posture
Accelerometers
worker
on-the-job safety
Construction Industry
Gait
Workplace
construction industry
Accidents
Construction industry
laboratory experiment
accident
Safety
Pressure
Experiments
Wounds and Injuries
cause
experiment

Keywords

  • Construction falls
  • Inertial measurement units
  • Iron workers
  • Postural stability
  • Risk analysis

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Safety Research
  • Public Health, Environmental and Occupational Health

Cite this

Fall risk analysis of construction workers using inertial measurement units : Validating the usefulness of the postural stability metrics in construction. / Jebelli, Houtan; Ahn, Changbum R.; Stentz, Terry L.

In: Safety Science, Vol. 84, 01.04.2016, p. 161-170.

Research output: Contribution to journalArticle

@article{74c96ce935704094b5566acb547af8c0,
title = "Fall risk analysis of construction workers using inertial measurement units: Validating the usefulness of the postural stability metrics in construction",
abstract = "Fall accidents are a leading cause of fatalities and injuries in the construction industry, and the loss of bodily stability is one of the primary factors contributing to such falls. Body stability can be analyzed by studying dynamic and postural stability, the assessment of which can ultimately improve worker safety on the job sites. Previous studies have introduced a method for assessing construction workers' gait stability, but there remains a need for a comprehensive method that can analyze the fall-risk of construction workers' in stationary postures. This study aims to test the usefulness of two metrics-velocity of the bodily center of pressure (COPv) and the resultant accelerometer (rAcc)-as predictors with which to measure workers' fall risk in stationary postures. A laboratory experiment was designed and conducted to gather IMU data and compare the resulting stability metrics (I-COPv and rAcc) with the postural stability observed while conducting the same activities on a forceplate (F-COPv). The experiment evaluated stationary-posture tasks with various fall-risk profiles: standing and squatting in different situations (e.g. wearing a loaded harness with a symmetric and an asymmetric load, and holding a toolbox). The analysis's results demonstrated a significant difference in I-COPv and rAcc values across different postures and tasks and also showed considerable correlations between the metrics from both the force plate and the IMU sensors. The results showed the distinguishing power of I-COPv and rAcc in measuring the fall risk of different construction workers' tasks in the stationary posture.",
keywords = "Construction falls, Inertial measurement units, Iron workers, Postural stability, Risk analysis",
author = "Houtan Jebelli and Ahn, {Changbum R.} and Stentz, {Terry L.}",
year = "2016",
month = "4",
day = "1",
doi = "10.1016/j.ssci.2015.12.012",
language = "English (US)",
volume = "84",
pages = "161--170",
journal = "Safety Science",
issn = "0925-7535",
publisher = "Elsevier",

}

TY - JOUR

T1 - Fall risk analysis of construction workers using inertial measurement units

T2 - Validating the usefulness of the postural stability metrics in construction

AU - Jebelli, Houtan

AU - Ahn, Changbum R.

AU - Stentz, Terry L.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Fall accidents are a leading cause of fatalities and injuries in the construction industry, and the loss of bodily stability is one of the primary factors contributing to such falls. Body stability can be analyzed by studying dynamic and postural stability, the assessment of which can ultimately improve worker safety on the job sites. Previous studies have introduced a method for assessing construction workers' gait stability, but there remains a need for a comprehensive method that can analyze the fall-risk of construction workers' in stationary postures. This study aims to test the usefulness of two metrics-velocity of the bodily center of pressure (COPv) and the resultant accelerometer (rAcc)-as predictors with which to measure workers' fall risk in stationary postures. A laboratory experiment was designed and conducted to gather IMU data and compare the resulting stability metrics (I-COPv and rAcc) with the postural stability observed while conducting the same activities on a forceplate (F-COPv). The experiment evaluated stationary-posture tasks with various fall-risk profiles: standing and squatting in different situations (e.g. wearing a loaded harness with a symmetric and an asymmetric load, and holding a toolbox). The analysis's results demonstrated a significant difference in I-COPv and rAcc values across different postures and tasks and also showed considerable correlations between the metrics from both the force plate and the IMU sensors. The results showed the distinguishing power of I-COPv and rAcc in measuring the fall risk of different construction workers' tasks in the stationary posture.

AB - Fall accidents are a leading cause of fatalities and injuries in the construction industry, and the loss of bodily stability is one of the primary factors contributing to such falls. Body stability can be analyzed by studying dynamic and postural stability, the assessment of which can ultimately improve worker safety on the job sites. Previous studies have introduced a method for assessing construction workers' gait stability, but there remains a need for a comprehensive method that can analyze the fall-risk of construction workers' in stationary postures. This study aims to test the usefulness of two metrics-velocity of the bodily center of pressure (COPv) and the resultant accelerometer (rAcc)-as predictors with which to measure workers' fall risk in stationary postures. A laboratory experiment was designed and conducted to gather IMU data and compare the resulting stability metrics (I-COPv and rAcc) with the postural stability observed while conducting the same activities on a forceplate (F-COPv). The experiment evaluated stationary-posture tasks with various fall-risk profiles: standing and squatting in different situations (e.g. wearing a loaded harness with a symmetric and an asymmetric load, and holding a toolbox). The analysis's results demonstrated a significant difference in I-COPv and rAcc values across different postures and tasks and also showed considerable correlations between the metrics from both the force plate and the IMU sensors. The results showed the distinguishing power of I-COPv and rAcc in measuring the fall risk of different construction workers' tasks in the stationary posture.

KW - Construction falls

KW - Inertial measurement units

KW - Iron workers

KW - Postural stability

KW - Risk analysis

UR - http://www.scopus.com/inward/record.url?scp=84953299589&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84953299589&partnerID=8YFLogxK

U2 - 10.1016/j.ssci.2015.12.012

DO - 10.1016/j.ssci.2015.12.012

M3 - Article

AN - SCOPUS:84953299589

VL - 84

SP - 161

EP - 170

JO - Safety Science

JF - Safety Science

SN - 0925-7535

ER -