Agreement between measured and self-reported physiological strain in males and females during simulated occupational heat stress

© 2024 The Authors. American Journal of Industrial Medicine published by Wiley Periodicals LLC..

RATIONALE: Monitoring physiological strain is recommended to safeguard workers during heat exposure, but is logistically challenging. The perceptual strain index (PeSI) is a subjective estimate thought to reflect the physiological strain index (PSI) that requires no physiological monitoring. However, sex is known to influence perceptions of heat stress, potentially limiting the utility of the PeSI.

OBJECTIVES: The objective of this study was to assess whether sex modifies the relationship between PeSI and PSI.

METHODS: Thirty-four adults (15 females) walked on a treadmill (moderate intensity; ~200 W/m2) for 180 min or until termination (volitional fatigue, rectal temperature ≥39.5°C) in 16°C, 24°C, 28°C, and 32°C wet-bulb globe temperatures. Rectal temperature and heart rate were recorded to calculate PSI (0-10 scale). Rating of perceived exertion and thermal sensation were recorded to calculate PeSI (0-10 scale). Relationships between PSI and PeSI were evaluated via linear mixed models. Mean bias (95% limits of agreement [LoA]) between PSI and PeSI was assessed via Bland-Altman analysis. Mean absolute error between measures was calculated by summing absolute errors between the PeSI and the PSI and dividing by the sample size.

FINDINGS: PSI increased with PeSI (p < 0.01) but the slope of this relation was not different between males and females (p = 0.83). Mean bias between PSI and PeSI was small (-0.4 points), but the 95% LoA (-3.5 to 2.7 points) and mean absolute error were wide (1.3 points).

IMPACT: Our findings indicate that sex does not appreciably impact the agreement between the PeSI and PSI during simulated occupational heat stress. The PeSI is not a suitable surrogate for the PSI in either male or female workers.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:67

Enthalten in:

American journal of industrial medicine - 67(2024), 5 vom: 16. Apr., Seite 466-473

Sprache:

Englisch

Beteiligte Personen:

O'Connor, Fergus K [VerfasserIn]
Meade, Robert D [VerfasserIn]
Notley, Sean R [VerfasserIn]
Ioannou, Leonidas G [VerfasserIn]
Flouris, Andreas D [VerfasserIn]
Kenny, Glen P [VerfasserIn]

Links:

Volltext

Themen:

Exercise
Female physiology
Journal Article
Perceptual strain index
Physiological strain index
Thermoregulation
Worker physiology

Anmerkungen:

Date Completed 15.04.2024

Date Revised 15.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/ajim.23580

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369829778