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Influence of light intensity on body responses after physical exercise performed in the evening

Influence of light intensity on hemodynamic, autonomic and circadian rhythm after aerobic exercise performed in the evening

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-4vcfjmm
Enrollment
Unknown
Registered
2022-01-13
Start date
2021-05-01
Completion date
Unknown
Last updated
2025-10-27

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

Conditions

Young adult

Interventions

A single group of 20 subjects will undergo 3 experimental conditions (randomized crossover study): 1 condition is under bright light (CE ~5000 lux), 1 is under control light (CC ~500 lux) and 1 is und
G11.427.590.530.689.277
G14.020

Sponsors

Escola de Educação Física e Esporte da Universidade de São Paulo
Lead Sponsor
Escola de Educação Física e Esporte da Universidade de São Paulo
Collaborator

Eligibility

Sex/Gender
Male
Age
20 Years to 40 Years

Inclusion criteria

Inclusion criteria: Men; age between 20 and 40 years old; blood pressure levels below 140/90 mmHg; absence of cardiovascular diseases; no smoking; no highly physically active; no use of regular medications, nutritional or ergogenic supplements; no extreme morningness and eveningness chronotype

Exclusion criteria

Exclusion criteria: Body mass index higher than 30kg/m²

Design outcomes

Primary

MeasureTime frame
Change in blood pressure measured by the ascultatoty method of at least 4 mmHg—

Secondary

MeasureTime frame
Change in blood flow measured by ultrasonography in 20 ml/min; change in cardiac sympathovagal balance assessed by heart rate variability of 20%; change in sympathetic vasomotor modulation assessed by blood pressure variability of 20%—

Countries

Brazil

Contacts

Public ContactLeandro Brito
leandrobrito@usp.br+55-11-30918792

Outcome results

None listed

Source: REBEC (via WHO ICTRP)