Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license


1 MSc, Department of Sport Sciences, Shiraz University, Shiraz, Iran

2 Assistant Professor of Exercise Physiology, Department of Sport Sciences, Shiraz University, Shiraz, Iran


Sprint interval training (SIT) includes repeated bouts of maximal intensity less than 30 seconds, which can improve fat oxidation rate post exercise recovery. Therefore, this study compared the effect of two sprint interval training protocols on fat oxidation rate in recovery in active women. 10 active women (mean age, 23.8 ± 2.82 years, weight, 57.2 ± 6.97 kg) voluntarily participated in this study. Participants completed 2 SIT protocols in a cross-over design with a 6-day interval: the first protocol (24 × 5-sec. bouts, 40-sec. recovery) and the second protocol (4 × 30-sec. bouts, 240-sec. recovery). Protocols matched for the duration of work (2 min.) and recovery (16 min.), as well as the work/recovery ratio (1:8). Energy expenditure (EE) and fat oxidation rate in recovery were calculated by gas exchange collected during 90 minutes. Results showed that fat oxidation was significantly lower during recovery 5:40 (0.082 g/min.) than training 30:240 (0.098 g/min.) (P<0.05). But, EE during training (160.11 kcal) and EE during recovery (100.31 kcal) were significantly higher than EE during training 30:240 (127.48 kcal) and EE during recovery 30:240 (88.26 kcal) (P<0.05). The present results showed that despite the higher EE during training 5:40 compared with training 30:240, SIT with longer work/recovery ratio had a greater effect on using fat during recovery after training.


1.   Gibala MJJCsmr. High-intensity interval training: a time-efficient strategy for health promotion? 2007;6(4):211-3.
2.   Weston KS, Wisløff U, Coombes JSJBJSM. High-intensity interval training in patients with lifestyle-induced cardiometabolic disease: a systematic review and meta-analysis. 2014;48(16):1227-34.
3.   Hwang C-L, Wu Y-T, Chou C-HJJocr, prevention. Effect of aerobic interval training on exercise capacity and metabolic risk factors in people with cardiometabolic disorders: a meta-analysis. 2011;31(6):378-85.
4.   Tjonna AE, Leinan IM, Bartnes AT, Jensen BM, Winett R, Wisloff UJAoBM. The Effects Ofa 4-minute Interval Training Protocol On Cardiorespiratoryand Metabolic Risk Factors: paper Session 28 12: 21 Pm-12: 39 Pm 4047. 2011;41(1):s250.
5.   Buchheit M, Laursen PBJSm. High-intensity interval training, solutions to the programming puzzle. 2013;43(10):927-54.
6.   Gibala MJ, Little JP, Van Essen M, Wilkin GP, Burgomaster KA, Safdar A, et al. Short‐term sprint interval versus traditional endurance training: similar initial adaptations in human skeletal muscle and exercise performance. 2006;575(3):901-11.
7.   Macpherson R, Hazell TJ, Olver TD, Paterson DH, Lemon PJM, sports si, et al. Run sprint interval training improves aerobic performance but not maximal cardiac output. 2011;43(1):115-22.
8.   Boer P-H, Meeus M, Terblanche E, Rombaut L, Wandele ID, Hermans L, et al. The influence of sprint interval training on body composition, physical and metabolic fitness in adolescents and young adults with intellectual disability: a randomized controlled trial. 2014;28(3):221-31.
9.   Boutcher SHJJoo. High-intensity intermittent exercise and fat loss. 2010;2011.
10. Stepto NK, Martin DT, Fallon KE, Hawley JAJM, Sports Si, Exercise. Metabolic demands of intense aerobic interval training in competitive cyclists. 2001;33(2):303-10.
11. King J, Broeder C, Browder K, Panton LJM, Sports Si, Exercise. A comparison of interval vs. steady-state exercise on substrate utilization in overweight women. 2002;34(5):S130.
12. Whyte LJ, Gill JM, Cathcart AJJM. Effect of 2 weeks of sprint interval training on health-related outcomes in sedentary overweight/obese men. 2010;59(10):1421-8.
13. Townsend LK, Couture KM, Hazell TJJAP, Nutrition,, Metabolism. Mode of exercise and sex are not important for oxygen consumption during and in recovery from sprint interval training. 2014;39(12):1388-94.
14. Beaulieu K, Olver TD, Abbott KC, Lemon PWJAP, Nutrition,, Metabolism. Energy intake over 2 days is unaffected by acute sprint interval exercise despite increased appetite and energy expenditure. 2014;40(1):79-86.
15. Hazell TJ, Olver TD, Hamilton CD, Lemon PWJIjosn, metabolism e. Two minutes of sprint-interval exercise elicits 24-hr oxygen consumption similar to that of 30 min of continuous endurance exercise. 2012;22(4):276-83.
16. Metcalfe RS, Babraj JA, Fawkner SG, Vollaard NBJEjoap. Towards the minimal amount of exercise for improving metabolic health: beneficial effects of reduced-exertion high-intensity interval training. 2012;112(7):2767-75.
17. Zelt JG, Hankinson PB, Foster WS, Williams CB, Reynolds J, Garneys E, et al. Reducing the volume of sprint interval training does not diminish maximal and submaximal performance gains in healthy men. 2014;114(11):2427-36.
18. Gillen JB, Percival ME, Skelly LE, Martin BJ, Tan RB, Tarnopolsky MA, et al. Three minutes of all-out intermittent exercise per week increases skeletal muscle oxidative capacity and improves cardiometabolic health. 2014;9(11):e111489.
19. Gillen JB, Martin BJ, MacInnis MJ, Skelly LE, Tarnopolsky MA, Gibala MJJPo. Twelve weeks of sprint interval training improves indices of cardiometabolic health similar to traditional endurance training despite a five-fold lower exercise volume and time commitment. 2016;11(4):e0154075.
20. Bogdanis GC, Vangelakoudi A, Maridaki MJJoss, medicine. Peak fat oxidation rate during walking in sedentary overweight men and women. 2008;7(4):525.
21. Venables MC, Achten J, Jeukendrup AEJJoap. Determinants of fat oxidation during exercise in healthy men and women: a cross-sectional study. 2005.
22. Tarnopolsky MAJM, sports si, exercise. Sex differences in exercise metabolism and the role of 17-beta estradiol. 2008;40(4):648-54.
23. Dreher J-C, Schmidt PJ, Kohn P, Furman D, Rubinow D, Berman KFJPotNAoS. Menstrual cycle phase modulates reward-related neural function in women. 2007;104(7):2465-70.
24. Hazell TJ, Hamilton CD, Olver TD, Lemon PWJAP, Nutrition,, Metabolism. Running sprint interval training induces fat loss in women. 2014;39(8):944-50.
25. Jeukendrup A, Wallis GJIjosm. Measurement of substrate oxidation during exercise by means of gas exchange measurements. 2005;26(S 1):S28-S37.
26. Islam H, Townsend LK, Hazell TJJAP, Nutrition,, Metabolism. Modified sprint interval training protocols. Part I. Physiological responses. 2016;42(4):339-46.
27. Deighton K, Barry R, Connon CE, Stensel DJJEjoap. Appetite, gut hormone and energy intake responses to low volume sprint interval and traditional endurance exercise. 2013;113(5):1147-56.
28. Hazell T, Olver T, Macpherson R, Hamilton C, Lemon PJTJosm, fitness p. Sprint interval exercise elicits near maximal peak VO2 during repeated bouts with a rapid recovery within 2 minutes. 2014;54(6):750-6.
29. Oertelt-Prigione S, Regitz-Zagrosek V. Sex and gender aspects in clinical medicine: Springer Science & Business Media; 2011.
30. Chan HH, Burns SFJAP, Nutrition,, Metabolism. Oxygen consumption, substrate oxidation, and blood pressure following sprint interval exercise. 2013;38(2):182-7.
31. Laforgia J, Withers RT, Gore CJJJoss. Effects of exercise intensity and duration on the excess post-exercise oxygen consumption. 2006;24(12):1247-64.
32. Williams CB, Zelt JG, Castellani LN, Little JP, Jung ME, Wright DC, et al. Changes in mechanisms proposed to mediate fat loss following an acute bout of high-intensity interval and endurance exercise. 2013;38(12):1236-44.
33. Skelly LE, Andrews PC, Gillen JB, Martin BJ, Percival ME, Gibala MJJAp, nutrition,, et al. High-intensity interval exercise induces 24-h energy expenditure similar to traditional endurance exercise despite reduced time commitment. 2014;39(7):845-8.