title: Postprandial lipemia 16 and 40 hours after low-volume eccentric resistance exercise.
abstract: OBJECTIVE
  There is evidence to suggest that muscle damage caused by resistance exercise (RE) may increase postprandial lipemia (PPL). This study examined PPL for two consecutive days after a protocol of low-volume eccentric RE that caused muscle damage.
  
  
  METHODS
  Nine healthy, untrained male volunteers aged 27.2 +/- 1.1 yr performed a session of eccentric RE consisting of eight sets of inclined leg presses at six repetition maximum with 3-min rest intervals. A high-fat meal (1.2 g fat, 1.2 g carbohydrate, 0.22 g protein, and 68.6 kJ kg(-1) body mass) was administered 16 h (day 1) and 40 h (day 2) after exercise as well as after an overnight fast with no prior exercise (control condition [C]). Venous blood samples were obtained before and hourly for 6 h after each meal.
  
  
  RESULTS
  The duration of the exercise session (including rest intervals) was 25.6 +/- 0.2 min, whereas net exercise time was 4.6 +/- 0.2 min. Total energy expenditure was 0.64 +/- 0.04 MJ. Serum creatine kinase and ratings of perceived muscle soreness were significantly elevated on day 1 and peaked on day 2. Triacylglycerol total area under the curve was 12.1% lower on day 1 compared with C (7.51 +/- 0.99 vs. 8.54 +/- 1.07 mmol L(-1) 6h(-1), P < 0.02), whereas no difference existed between C and day 2. Serum insulin incremental area under the curve was significantly elevated on day 2 compared with C, indicating transient insulin resistance.
  
  
  CONCLUSIONS
  These results show that low-volume eccentric RE is effective in reducing postprandial triacylglycerol concentration despite the low energy expenditure. Muscle damage does not have a detrimental effect on PPL.
authors.affiliation: Department of Sports Medicine and Biology of Physical Activity, Faculty of Physical Education and Sports Sciences, University of Athens, Athens, Greece. zpafili@phed.uoa.gr
authors.forename: Zoe K
authors.initials: ZK
authors.lastname: Pafili
authors.forename: Gregory C
authors.initials: GC
authors.lastname: Bogdanis
authors.forename: Natassa V
authors.initials: NV
authors.lastname: Tsetsonis
authors.forename: Maria
authors.initials: M
authors.lastname: Maridaki
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000378:metabolism; D016022:Case-Control Studies; D003402:Creatine Kinase / Q000097:blood; D004041:Dietary Fats / Q000008:administration & dosage; D004734:Energy Metabolism; D015444:Exercise / Q000502:physiology; D006801:Humans; D007328:Insulin / Q000097:blood; D007770:L-Lactate Dehydrogenase / Q000097:blood; D008297:Male; D018482:Muscle, Skeletal / Q000378:metabolism; D019518:Postprandial Period / Q000502:physiology*; D055070:Resistance Training / Q000009:adverse effects*; D014280:Triglycerides / Q000097:blood*
chemical_list: D001786:Blood Glucose; D004041:Dietary Fats; D007328:Insulin; D014280:Triglycerides; D007770:L-Lactate Dehydrogenase; D003402:Creatine Kinase