The Influence of Light Exposure on Exercise Performance Dependent on Chronotype. (EX-Light)

University of Basel

Status: Completed

Conditions: Endurance Performance; Muscle Strength; Reaction Time

Treatments: Other: exposure to bright light; Other: exposure to blue-enriched light; Other: exposure to normal light

Study type: Interventional

Funder types: Other

Identifiers

NCT02203539

EKNZ 2014-056

Details and patient eligibility

About

The purpose of this study is to determine if an exposure to light in the evening has a positive influence on physical performance regarding endurance, strength and reaction time.

Enrollment: 74 patients

Sex: Male

Ages: 18 to 35 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• BMI 18 to 30 kg/m2
• endurance performance >= 55 ml/min/kg peak oxygen uptake

Exclusion criteria

• cardiovascular disease
• renal dysfunction
• shiftworking
• travels over time zones in the last 4 weeks
• high blood pressure (systolic blood pressure >170mmHg, diastolic blood pressure >100mmHg)
• depression

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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74 participants in 3 patient groups

bright light

Experimental group

Description:

Intervention: exposure to bright light

Treatment:

Other: exposure to bright light

blue-enriched light

Experimental group

Description:

Intervention: exposure to blue-enriched light

Treatment:

Other: exposure to blue-enriched light

normal light

Experimental group

Description:

Intervention: exposure to normal light

Treatment:

Other: exposure to normal light