Diurnal variation of fat oxidation rate and energy expenditure in an acute bout of endurance exercise by young healthy males.
Circadian
diurnal
endurance exercise
energy expenditure
fat oxidation
respiratory exchange ratio
Journal
Journal of family medicine and primary care
ISSN: 2249-4863
Titre abrégé: J Family Med Prim Care
Pays: India
ID NLM: 101610082
Informations de publication
Date de publication:
Jan 2022
Jan 2022
Historique:
received:
19
06
2021
revised:
04
10
2021
accepted:
08
10
2021
entrez:
21
3
2022
pubmed:
22
3
2022
medline:
22
3
2022
Statut:
ppublish
Résumé
Few studies have reported that circadian rhythm affects fat oxidation (FOx) during exercise. Time-of-day causing greater FOx and energy expenditure (EE) during exercise would be beneficial in the prevention of physical inactivity-related health disorders such as metabolic syndrome. The study aims to compare EE and FOx rate after an endurance exercise session done in the morning and late-afternoon hours by apparently healthy young male participants. The present crossover quasi-experimental study involved 10 moderately active but physically untrained male participants of age 18-25 years with normal body mass index. Participants did a steady-state exercise on a motorized treadmill for 30 minutes at a moderate-intensity (50 ± 2% of their heart rate reserve) on two separate occasions at 9:00-10:00 and 15:00-16:00. A similar meal followed by 2 hours of fasting was done before each trial session. During the last 2 minutes of the exercise session, the respiratory gas analysis estimated volume of oxygen (VO Morning versus late-afternoon variations in FOx (269 ± 110 vs 290 ± 110, In an acute bout of endurance, exercise done by young and healthy male individuals, FOx was significantly higher, while EE tends to be higher in late-afternoon than in the morning.
Sections du résumé
Background
UNASSIGNED
Few studies have reported that circadian rhythm affects fat oxidation (FOx) during exercise. Time-of-day causing greater FOx and energy expenditure (EE) during exercise would be beneficial in the prevention of physical inactivity-related health disorders such as metabolic syndrome. The study aims to compare EE and FOx rate after an endurance exercise session done in the morning and late-afternoon hours by apparently healthy young male participants.
Material and Methods
UNASSIGNED
The present crossover quasi-experimental study involved 10 moderately active but physically untrained male participants of age 18-25 years with normal body mass index. Participants did a steady-state exercise on a motorized treadmill for 30 minutes at a moderate-intensity (50 ± 2% of their heart rate reserve) on two separate occasions at 9:00-10:00 and 15:00-16:00. A similar meal followed by 2 hours of fasting was done before each trial session. During the last 2 minutes of the exercise session, the respiratory gas analysis estimated volume of oxygen (VO
Results
UNASSIGNED
Morning versus late-afternoon variations in FOx (269 ± 110 vs 290 ± 110,
Conclusion
UNASSIGNED
In an acute bout of endurance, exercise done by young and healthy male individuals, FOx was significantly higher, while EE tends to be higher in late-afternoon than in the morning.
Identifiants
pubmed: 35309658
doi: 10.4103/jfmpc.jfmpc_1209_21
pii: JFMPC-11-240
pmc: PMC8930106
doi:
Types de publication
Journal Article
Langues
eng
Pagination
240-244Informations de copyright
Copyright: © 2022 Journal of Family Medicine and Primary Care.
Déclaration de conflit d'intérêts
There are no conflicts of interest.
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