title: Multiple bouts of resistance exercise and postprandial triacylglycerol and serum C-reactive-protein concentrations.
abstract: The present study examined how multiple bouts of resistance exercise, performed over 1 d, influence 2 risk factors--postprandial triacylglycerol (TAG) and serum C-reactive-protein (CRP) concentrations--associated with coronary heart disease. Twenty-four men age 23.5 (SD 3.4) y completed two 2-d trials, exercise and control, at least 1 wk apart in a counterbalanced randomized design. On day 1 of the exercise trials participants completed 20 sets of 15 repetitions of 5 different resistance exercises divided into five 45-min bouts of exercise--100 sets and 1500 repetitions in total for all exercises. Exercises were performed at 30-40% of 1-repetition maximum. Blood samples were taken before and after exercise. On day 1 of the control trial participants were inactive, with blood samples taken at time points corresponding to the exercise trial. On day 2 of both trials participants consumed a test meal (0.89 g fat, 1.23 g carbohydrate, 0.4 g protein, 60 kJ per kg body mass). Blood samples were obtained fasted and for 6 h postprandially. Total area under the postprandial TAG concentration versus time curve was 12% lower in the exercise than in the control trial (8.76 [3.54] vs. 9.94 [4.31] mmol.L(-1).6 h-1, respectively; P = 0.037). Serum CRP concentrations did not change over the 2 d in the control trial but increased in the exercise trial: trial x time interaction (P = 0.028). Multiple bouts of resistance exercise reduce postprandial TAG concentrations but increase serum CRP concentrations. The extent to which these findings are clinically relevant requires further study.
authors.affiliation: School of Sport and Exercise Sciences, Longborough University, Longborough, Leicestershire, LE11 3TU, UK.
authors.forename: Stephen F
authors.initials: SF
authors.lastname: Burns
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyashita
authors.forename: Chihoko
authors.initials: C
authors.lastname: Ueda
authors.forename: David J
authors.initials: DJ
authors.lastname: Stensel
mesh_terms: D000328:Adult; D019540:Area Under Curve; D002097:C-Reactive Protein / Q000378:metabolism*; D018592:Cross-Over Studies; D004041:Dietary Fats / Q000378:metabolism; D004734:Energy Metabolism / Q000502:physiology; D005215:Fasting; D006801:Humans; D008297:Male; D019518:Postprandial Period / Q000502:physiology; D013997:Time Factors; D014280:Triglycerides / Q000097:blood*; D014891:Weight Lifting / Q000502:physiology*
chemical_list: D004041:Dietary Fats; D014280:Triglycerides; D002097:C-Reactive Protein