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An app-based intervention (REHEAT strategy) reduces adverse effects of heatwaves among Swiss home care workers

This protocol describes a randomized controlled trial testing the REHEAT app intervention to protect home care workers from heat-related health risks. The study aims to evaluate the effectiveness of the app in reducing strain accumulation, improving cognitive performance, emotional distress, sleep, night recovery, and mental and physical health during summer months. The trial involves 350 participants from Northern and Southern Switzerland, with data collection ongoing and no results yet available.

Last updated: Jul 7, 2026•1 RCTs•📖 Read as article →

Evidence Score

Evidence Score42/100
Human RCT★★☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. An App-Based Intervention to Protect Home Care Workers From Heat-Related Health Risks: Protocol for a Randomized Controlled Trial.

observational

Gerosa T, Fortunato R, Cellina F, Ragettli M, Marzorati D, Baldassari A, Levati S, Karabegovic A, Baumann I · Inquiry : a journal of medical care organization, provision and financing (2025)

Participants: N/A
Duration: June to September 2025
Intervention: REHEAT app-based intervention (used from June to September 2025)
Outcome: Strain accumulation, cognitive performance, emotional distress, sleep, night recovery, mental and physical health
Effect Size: N/A
Population: Swiss home care workers (n=350) from Northern and Southern Switzerland

Result:

PubMed: 41437581DOI: 10.1177/00469580251405766

Mechanism Graph

App provides real-time heat risk alerts and guidance
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Workers modify behavior to reduce heat exposure
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Reduced physiological strain and improved recovery
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Result: Lower adverse health effects during heatwaves

Limitations

  • ⚠Unblinded design may introduce bias
  • ⚠No outcome data yet available; results are pending
  • ⚠App usage compliance may vary and affect real-world effectiveness

Frequently Asked Questions

What is the REHEAT intervention?▼

REHEAT is an app-based strategy designed to protect home care workers from heat-related health risks by providing alerts and guidance during heatwaves.

How many participants are in this study?▼

The study enrolled 350 home care workers from Northern and Southern Switzerland.

What outcomes are being measured?▼

Primary outcomes include strain accumulation, cognitive performance, emotional distress, sleep quality, night recovery, and mental and physical health.

When will results be available?▼

Data collection is ongoing from June to September 2025, and no outcome data have been analyzed yet.

Products

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References

  1. 1.Gerosa T, Fortunato R, Cellina F, Ragettli M, Marzorati D, Baldassari A, Levati S, Karabegovic A, Baumann I. "An App-Based Intervention to Protect Home Care Workers From Heat-Related Health Risks: Protocol for a Randomized Controlled Trial.." Inquiry : a journal of medical care organization, provision and financing, 2025. PMID: 41437581 DOI: 10.1177/00469580251405766
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.