Effects of Light and Exercise on Human Circadian Rhythms and Performance

Mass General Brigham

Status: Completed

Conditions: Circadian Rhythm

Treatments: Behavioral: Light and exercise

Study type: Interventional

Funder types: Other

Identifiers

NCT02747719

HFP02802

Details and patient eligibility

About

Both light and exercise are effective countermeasures for space and ground-based crews for circadian phase resetting and alertness levels. The investigators propose to test the combined effects of these two countermeasures to determine whether adding exercise to light stimuli will further improve circadian phase resetting and alertness.

Enrollment: 8 patients

Sex: All

Ages: 18 to 55 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• healthy by history, physical exam, laboratory studies of blood and urine, and psychological screening
• moderate-intensity exercise for at least 150 minutes per week

Exclusion criteria

• color blind
• no prescription medications, except hormonal birth control in females

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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8 participants in 1 patient group

Light and exercise

Experimental group

Description:

Exposure to light with exercise

Treatment:

Behavioral: Light and exercise