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Effects of Caffeine Intake on Cardiopulmonary Variables and QT Interval after a Moderate-Intensity Aerobic Exercise in Healthy Adults: A Randomized Controlled Trial.
- Source :
- BioMed Research International; 1/5/2022, p1-9, 9p
- Publication Year :
- 2022
-
Abstract
- Caffeine is considered a widely consumed natural and legal psychoactive stimulant with several effects on the body. The present study attempted to investigate the effects of caffeine consumed before and after a physical exercise on cardiovascular and cardiorespiratory functions in healthy adults. 36 healthy adult males were recruited and randomly allocated to one of the three (3) groups: group I (exercise without caffeine consumption), group II (caffeine beverage intake before exercise), and group III (caffeine beverage intake immediately after exercise). The heart rate (HR), QTc interval, blood pressure (BP), respiratory rate (RR), oxygen consumption (VO₂), and carbon dioxide emission (VCO₂) were measured at 0, 5, 10, and 15 min after the exercise. We observed a significant difference in all measured outcomes during the different recovery times in all the groups (p < 0.05). HR, RR, SBP, VO<subscript>2</subscript>, and VCO<subscript>2</subscript> gradually decreased with time, DBP contrarily increased with time, and the QTc showed an irregular pattern. We can affirm that ingestion of caffeine before and after moderate aerobic exercise slows down the parasympathetic stimulation, heart rate recovery, and the recovery of HR and QTc with no major effects on BP, RR, VO₂, and VCO₂ in healthy adult men. [ABSTRACT FROM AUTHOR]
- Subjects :
- BLOOD pressure
PARASYMPATHETIC nervous system
CARDIOVASCULAR system physiology
AEROBIC exercises
OXYGEN consumption
INGESTION
RESPIRATORY measurements
RANDOMIZED controlled trials
COOLDOWN
CAFFEINE
RESPIRATORY organ physiology
EXERCISE intensity
HEART rate monitoring
CARBON dioxide
STATISTICAL sampling
PHARMACODYNAMICS
ADULTS
Subjects
Details
- Language :
- English
- ISSN :
- 23146133
- Database :
- Complementary Index
- Journal :
- BioMed Research International
- Publication Type :
- Academic Journal
- Accession number :
- 154508669
- Full Text :
- https://doi.org/10.1155/2022/3170947