Exercise intensity and postprandial health outcomes in adolescents.
Eur J Appl Physiol
; 115(5): 927-36, 2015 May.
Article
in En
| MEDLINE
| ID: mdl-25501677
ABSTRACT
PURPOSE:
The effect of exercise intensity and sex on postprandial risk factors for cardiovascular disease in adolescents is unknown. We examined the effect of a single bout of work-matched high-intensity interval exercise (HIIE) and moderate-intensity exercise (MIE) on postprandial triacylglycerol (TAG) and systolic blood pressure (SBP) in adolescents.METHOD:
Twenty adolescents (10 male, 14.3 ± 0.3 years) completed three 1-day trials (1) rest (CON); (2) 8 × 1 min cycling at 90 % peak power with 75 s recovery (HIIE); (3) cycling at 90 % of the gas exchange threshold (MIE), 1 h before consuming a high-fat milkshake (1.50 g fat and 80 kJ kg(-1)). Postprandial TAG, SBP and fat oxidation were assessed over 4 hRESULTS:
Compared to CON, the incremental area under the curve for TAG (IAUC-TAG) was not significantly lowered in HIIE [P = 0.22, effect size (ES) = 0.24] or MIE (P = 0.65, ES = 0.04) for boys. For girls, HIIE and MIE lowered IAUC-TAG by 34 % (P = 0.02, ES = 0.58) and 38 % (P = 0.09, ES = 0.73), respectively, with no difference between HIIE and MIE (P = 0.74, ES = 0.14). Changes in TAG were not related to energy expenditure during exercise or postprandial fat oxidation. Postprandial SBP (total-AUC pooled for both sexes) was lower in HIIE compared to CON (P = 0.01, ES = 0.68) and MIE (P = 0.02, ES = 0.60), with no difference between MIE and CON (P = 0.45, ES = 0.14).CONCLUSION:
A single bout of HIIE and MIE, performed 1 h before an HFM, can meaningfully attenuate IAUC-TAG in girls but not boys. Additionally, HIIE, but not MIE, may lower postprandial SBP in normotensive adolescents.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Triglycerides
/
Blood Pressure
/
Cardiovascular Diseases
/
Exercise
/
Postprandial Period
Type of study:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adolescent
/
Female
/
Humans
/
Male
Language:
En
Journal:
Eur J Appl Physiol
Journal subject:
FISIOLOGIA
Year:
2015
Type:
Article
Affiliation country:
United kingdom