title: Effect of acute caffeine ingestion on EPOC after intense resistance training.
abstract: OBJECTIVE
  This study investigated the effect of acute caffeine (CAF) intake on postexercise oxygen consumption (EPOC) after intense resistance training.
  
  
  METHODS
  Fourteen strength-trained men (mean ± SD age and mass =23.1 ± 4.2 yr and 83.4 ± 13.2 kg, respectively) who were caffeine users initially completed one-repetition maximum testing (1-RM) of four exercises: bench press, leg press, lat row, and shoulder press. On each of two days separated by one week, they completed four sets of each exercise to fatigue at 70-80% 1-RM, which was preceded by ingestion of CAF (6 mg/kg) or placebo. Pre-exercise, indirect calorimetry was used to assess energy expenditure for 35 min; this was repeated for 75 min postexercise while subjects remained seated in a quiet lab. Two-way analysis of variance with repeated measures was used to examine differences in gas exchange variables across time and treatment.
  
  
  RESULTS
  Results revealed that EPOC was significantly higher (P<0.05) with CAF (26.7 ± 4.1 L) compared to placebo (22.8 ± 3.8 L). With CAF ingestion, oxygen uptake was significantly higher (P<0.05) from 10 min pre-exercise to 70 min postexercise. Respiratory exchange ratio was significantly different (P<0.05) with CAF versus placebo. Caffeine intake increased total energy expenditure by 15% (P<0.05), but the additional calories burned was minimal (+27 kcal).
  
  
  CONCLUSIONS
  Caffeine ingestion in individuals regularly completing rigorous resistance training significantly increases EPOC and energy expenditure pre-and post-exercise, yet the magnitude of this effect is relatively small.
authors.affiliation: Department of Kinesiology, California State University, San Marcos, CA, USA. astorino@csusm.edu
authors.forename: T A
authors.initials: TA
authors.lastname: Astorino
authors.forename: B J
authors.initials: BJ
authors.lastname: Martin
authors.forename: K
authors.initials: K
authors.lastname: Wong
authors.forename: L
authors.initials: L
authors.lastname: Schachtsiek
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001628:Beverages; D002110:Caffeine / Q000008:administration & dosage*; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D055070:Resistance Training; D055815:Young Adult
chemical_list: D002110:Caffeine