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J Occup Environ Med. 2016 Feb;58(2):133-9. doi: 10.1097/JOM.0000000000000655.

Effects of Lifetime Occupational Pesticide Exposure on Postural Control Among Farmworkers and Non-Farmworkers.

Author information

1
Industrial and Systems Engineering, (Dr Sunwook, Dr Nussbaum) Virginia Tech, Blacksburg; Division of Public Health Sciences, Department of Epidemiology and Prevention (Dr Quandt), Center for Worker Health; Department of Radiology (Dr Laurienti); Department of Family and Community Medicine (Dr Arcury), Center for Worker Health, Wake Forest School of Medicine, Winston-Salem, NC.

Abstract

OBJECTIVE:

The aim of the study was to assess potential chronic effects of pesticide exposure on postural control, by examining postural balance of farmworkers and non-farmworkers diverse self-reported lifetime exposures.

METHODS:

Balance was assessed during quiet upright stance under four experimental conditions (2 visual × 2 cognitive difficulty).

RESULTS:

Significant differences in baseline balance performance (eyes open without cognitive task) between occupational groups were apparent in postural sway complexity. When adding a cognitive task to the eyes open condition, the influence of lifetime exposure on complexity ratios appeared different between occupational groups. Removing visual information revealed a negative association of lifetime exposure with complexity ratios.

CONCLUSIONS:

Farmworkers and non-farmworkers may use different postural control strategies even when controlling for the level of lifetime pesticide exposure. Long-term exposure can affect somatosensory/vestibular sensory systems and the central processing of sensory information for postural control.

PMID:
26849257
PMCID:
PMC4746006
DOI:
10.1097/JOM.0000000000000655
[Indexed for MEDLINE]
Free PMC Article

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