Effect of alternating postures on cognitive performance for healthy people performing sedentary work

Prolonged sitting is a risk factor for several diseases and the prevalence of worksite-based interventions such as sit-to-stand workstations is increasing. Although their impact on sedentary behaviour has been regularly investigated, the effect of working in alternating body postures on cognitive pe...

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Bibliographic Details
Published in:Ergonomics 2018-06, Vol.61 (6), p.778-795
Main Authors: Schwartz, Bernhard, Kapellusch, Jay M, Schrempf, Andreas, Probst, Kathrin, Haller, Michael, Baca, Arnold
Format: Article
Language:English
Subjects:
Cognitive ability
Health risks
Posture
Randomization
Reaction time
Risk factors
Sedentary behavior
Space life sciences
Variance analysis
Working conditions
Workload
Workloads
Workstations
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Summary:Prolonged sitting is a risk factor for several diseases and the prevalence of worksite-based interventions such as sit-to-stand workstations is increasing. Although their impact on sedentary behaviour has been regularly investigated, the effect of working in alternating body postures on cognitive performance is unclear. To address this uncertainty, 45 students participated in a two-arm, randomised controlled cross-over trial under laboratory conditions. Subjects executed validated cognitive tests (working speed, reaction time, concentration performance) either in sitting or alternating working postures on two separate days (ClinicalTrials.gov Identifier: NCT02863731). MANOVA results showed no significant difference in cognitive performance between trials executed in alternating, standing or sitting postures. Perceived workload did not differ between sitting and alternating days. Repeated measures ANOVA revealed significant learning effects regarding concentration performance and working speed for both days. These results suggest that working posture did not affect cognitive performance in the short term. Practitioner Summary: Prior reports indicated health-related benefits based on alternated (sit/stand) body postures. Nevertheless, their effect on cognitive performance is unknown. This randomised controlled trial showed that working in alternating body postures did not influence reaction time, concentration performance, working speed or workload perception in the short term.
ISSN:0014-0139
1366-5847
DOI:10.1080/00140139.2017.1417642