INTRODUCTION: High-intensity intermittent exercise training (HIT) may favourably alter body composition despite low training volumes and predicted energy expenditure (EE). PURPOSE: To characterise the acute impact of two common HIT protocols on EE and post-exercise oxygen consumption (11 h EPOC). METHODS: Oxygen consumption (l min(-1)), respiratory exchange ratio (RER) and EE were measured in nine healthy, lean males over 12 h under three conditions: control (CON), HIT1 (10 × 1 min high-intensity cycling bouts followed by 1 min rest) and HIT2 (10 × 4 min high-intensity cycling bouts followed by 2 min rest). RESULTS: Total exercise period EE during HIT1 (1,151 ± 205 kJ) (mean ± SD) was significantly lower than HIT2 (2,788 ± 322 kJ; p < 0.001). EE within the 60 min after exercise was significantly albeit marginally higher after HIT1 (388 ± 44 kJ; p = 0.02) and HIT2 (389 ± 39 kJ; p = 0.01) compared with CON (329 ± 39 kJ), with no difference between exercise conditions (p = 0.778). RER during this period was significantly lower in HIT1 (0.78 ± 0.06; p = 0.011) and HIT2 (0.76 ± 0.04; p = 0.004) compared with CON (0.87 ± 0.06). During the 'slow phase' of EPOC (1.25-9.75 h), there were no significant differences in EE (p = 0.07) or RER (p = 0.173) between trials. CONCLUSIONS: Single HIT sessions notably increases EE during exertion; however, the influence on metabolic rate post-exercise is transient and relatively minor.
INTRODUCTION: High-intensity intermittent exercise training (HIT) may favourably alter body composition despite low training volumes and predicted energy expenditure (EE). PURPOSE: To characterise the acute impact of two common HIT protocols on EE and post-exercise oxygen consumption (11 h EPOC). METHODS:Oxygen consumption (l min(-1)), respiratory exchange ratio (RER) and EE were measured in nine healthy, lean males over 12 h under three conditions: control (CON), HIT1 (10 × 1 min high-intensity cycling bouts followed by 1 min rest) and HIT2 (10 × 4 min high-intensity cycling bouts followed by 2 min rest). RESULTS: Total exercise period EE during HIT1 (1,151 ± 205 kJ) (mean ± SD) was significantly lower than HIT2 (2,788 ± 322 kJ; p < 0.001). EE within the 60 min after exercise was significantly albeit marginally higher after HIT1 (388 ± 44 kJ; p = 0.02) and HIT2 (389 ± 39 kJ; p = 0.01) compared with CON (329 ± 39 kJ), with no difference between exercise conditions (p = 0.778). RER during this period was significantly lower in HIT1 (0.78 ± 0.06; p = 0.011) and HIT2 (0.76 ± 0.04; p = 0.004) compared with CON (0.87 ± 0.06). During the 'slow phase' of EPOC (1.25-9.75 h), there were no significant differences in EE (p = 0.07) or RER (p = 0.173) between trials. CONCLUSIONS: Single HIT sessions notably increases EE during exertion; however, the influence on metabolic rate post-exercise is transient and relatively minor.
Authors: Jennifer C Richards; Tyler K Johnson; Jessica N Kuzma; Mark C Lonac; Melani M Schweder; Wyatt F Voyles; Christopher Bell Journal: J Physiol Date: 2010-06-14 Impact factor: 5.182
Authors: Márcio A G Sindorf; Moisés D Germano; Wellington G Dias; Danilo R Batista; Tiago V Braz; Marlene A Moreno; Charles R Lopes Journal: Int J Exerc Sci Date: 2021-10-01
Authors: Lindsay N Schleppenbach; Andreas B Ezer; Sarah A Gronemus; Katelyn R Widenski; Saori I Braun; Jeffrey M Janot Journal: Int J Exerc Sci Date: 2017-11-01
Authors: R S Metcalfe; F Koumanov; J S Ruffino; K A Stokes; G D Holman; D Thompson; N B J Vollaard Journal: Eur J Appl Physiol Date: 2015-07-09 Impact factor: 3.078