Persistent effect of acute sprint interval cycling and energy replacement on postprandial lipemia
Freese, Eric Christopher
MetadataShow full item record
The purpose of this study was to determine the influence of sprint interval cycling (SIC) on postprandial lipemia (PPL) and whether the replacement of the energy deficit created by SIC influences the reduction in PPL. Twelve healthy subjects, 6 men and 6 women, participated in 3 trials each taking place over 2 days. On the evening of the first day of each trial, the subjects either did SIC without replacing the energy deficit (Ex-Def), did SIC and replaced the energy deficit (Ex-Bal), or did not exercise (Con). In the morning of the second day, subjects ate a high-fat meal. Venous blood samples were collected in the fasted state and then at 0, 30, 60, 120, and 180 minutes postprandial. There was no significant difference in fasting TG concentrations (P > 0.05). The postprandial area under the curve (AUC) (mmol·l-1·3 h-1) TG response was significantly lower in Ex-Def (21%, P = 0.006) and Ex-Bal (10%, P = 0.044) compared to Con. Ex-Def was significantly lower (12%, P = 0.032) compared to Ex-Bal in postprandial AUC TG response. Incremental TG AUC response did not differ among the treatments, suggesting the reduction in TG AUC was associated with lower fasting TG concentrations. The results indicate that SIC reduces PPL, in part, because of the energy deficit created.