The effects of bright light exposure on sleepiness and oral temperature

Evaluation of the effects of bright light exposure on sleepiness and oral temperature among hospital night shift staffs

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20180412039280N1

Enrollment

147

Registered

2019-01-04

Start date

2017-06-22

Completion date

Unknown

Last updated

2019-01-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

sleepiness.

Interventions

Intervention 1: Intervention group 1: The participants received 2500 LUX light. Then they exposed to normal light 300LUX after 6-day wash out period. Intervention 2: Intervention group 2: the particip

Eligibility

Sex/Gender

All

Age

No minimum to 50 Years

Inclusion criteria

Inclusion criteria: Consent to participate in the study. Shift Workers at the Asia Hospital in Tehran working more than one year at night shifts .

Exclusion criteria

Exclusion criteria: substances or drugs user

Design outcomes

Primary

Measure	Time frame
Drowsiness. Timepoint: before exposure and after exposure. Method of measurement: Stanford sleepiness scale questionnaire.;Oral temperature. Timepoint: before exposure and after exposure. Method of measurement: Medical mercury thermomete.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohsen Poursadeghiyan

poursadeghiyan@gmail.com+98 21 2218 0043

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026