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Metabolic biomarkers following a short and long bout of high-intensity functional training in recreationally trained men
Abstract
Glucose regulation is a fundamental process of metabolic function, and is acutely altered by physical activity. High-Intensity Functional Training (HIFT) is a form of exercise performed using combinations of various modalities and durations. It is unknown if the metabolic responses to HIFT are similar to more commonly studied modalities (e.g., cycling and treadmill exercise), or if exercise duration will influence glucose regulation. The purpose of this study was to determine the effect of a Short (< 5-min) and Long (15-min) bout of HIFT on plasma metabolic biomarkers. Ten apparently healthy males (28.11 ± 5.09yrs) participated in this study. Two HIFT sessions (SHORT and LONG) were performed in a crossover fashion. Blood plasma was collected at four time points: PRE, POST, 1HR, and 3HR in order to examine glucose (GLU), insulin (INS), epinephrine (E), and norepinephrine (NE) responses. No trial dependent difference between the SHORT and LONG bouts in GLU (p=0.054), INS (p=0.671), E (p=0.078), and NE (p=0.194). A time effect was observed in both bouts only at POST for GLU (p<0.001), INS (p=0.011), E (p<0.001), and NE (p<0.001). All times returned to baseline values (p>0.05), except for lowered 3HR E (p=0.007). This study demonstrated that both SHORT and LONG bouts of HIFT elicited GLU, INS, E, and NE responses similar to those reported in response to high-intensity treadmill and cycling exercise, and that duration of the HIFT bouts may not be a determining factor in glucose regulation in healthy individuals.
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References
Adams, P. (2013). The Impact of Brief High-Intensity Exercise on Blood Glucose Levels. Diabetes Metab Syndr and Obes: Targets and Therapy,6, 113–22. https://doi.org/10.2147/DMSO.S29222
Babraj, J.A., Vollaard, N.B.J., Keast, C., Guppy, F.M., Cottrell, G., Timmons, J.A. (2009). Extremely Short Duration High Intensity Interval Training Substantially Improves Insulin Action in Young Healthy Males. BMC Endocr Disord, 9, 3. https://doi.org/10.1186/1472-6823-9-3
Gillen, J.B., Little, J.P., Punthakee, Z., Tarnopolsky, M.A., Riddell, M.C., Gibala, M.J. (2012). Acute High-Intensity Interval Exercise Reduces the Postprandial Glucose Response and Prevalence of Hyperglycaemia in Patients with Type 2 Diabetes. Diabetes Obes Metab.,14(6), 575–77. https://doi.org/10.1111/j.1463-1326.2012.01564.x
Gillen, J.B., Gibala, M.J. (2013). Is High-Intensity Interval Training a Time-Efficient Exercise Strategy to Improve Health and Fitness? Appl Physiol Nutr Metab.,39(3), 409–12. https://doi.org/10.1139/apnm-2013-0187
Heinrich, K.M., Patel, P.M., O'Neal, J.L., Heinrich, B.S., (2014). High-Intensity Compared to Moderate-Intensity Training for Exercise Initiation, Enjoyment, Adherence, and Intentions: An Intervention Study. BMC Public Health.,14, 789. https://doi.org/10.1186/1471-2458-14-789
Henriksson, J. (1995). Influence of Exercise on Insulin Sensitivity. J Cardiovasc Risk.,2(4), 303–9. https://doi.org/10.1097/00043798-199508000-00004
Karstoft, K., Winding, K., Knudsen, S.H., James, N.G., Scheel, M.M., Olesen, J., Holst, J.J., Pedersen, B.K., Solomon, T.P.J. (2014). Mechanisms behind the Superior Effects of Interval vs Continuous Training on Glycaemic Control in Individuals with Type 2 Diabetes: A Randomised Controlled Trial. Diabetologia, 57(10), 2081–93. https://doi.org/10.1007/s00125-014-3334-5
Little, J.P., Gillen, J.B., Percival, M.E., Safdar, A., Tarnopolsky, M.A., Punthakee, Z., Jung, M.E., Gibala, M.J. (2011). Low-Volume High-Intensity Interval Training Reduces Hyperglycemia and Increases Muscle Mitochondrial Capacity in Patients with Type 2 Diabetes. J Appl Physiol., 111(6), 1554–60. https://doi.org/10.1152/japplphysiol.00921.2011
Marliss, E.B., Mladen, V. (2002). Intense Exercise Has Unique Effects on Both Insulin Release and Its Roles in Glucoregulation." Diabetes, 51 (suppl 1), S271–83. https://doi.org/10.2337/diabetes.51.2007.S271
Mitranun, W., Deerochanawong, C., Tanaka, H., Suksom, D. (2014). Continuous vs Interval Training on Glycemic Control and Macro- and Microvascular Reactivity in Type 2 Diabetic Patients. Scan J Med Sci Sports., 24(2), e69–76. https://doi.org/10.1111/sms.12112
Samaan, M.C., Marcinko, K., Sikkema, S., Fullerton, M.D., Ziafazeli, T., Khan, M.I., Steinberg, G.R. (2014). Endurance Interval Training in Obese Mice Reduces Muscle Inflammation and Macrophage Content Independently of Weight Loss. Physiol Reports, 2(5), e12012. https://doi.org/10.14814/phy2.12012
Schenk, S., Horowitz, J.F. (2007). Acute Exercise Increases Triglyceride Synthesis in Skeletal Muscle and Prevents Fatty Acid–induced Insulin Resistance. J Clin Invest.,117(6), 1690–98. https://doi.org/10.1172/JCI30566
Shaban, N., Kenno, K.A., Milne, K.J. (2014). The Effects of a 2 Week Modified High Intensity Interval Training Program on the Homeostatic Model of Insulin Resistance (HOMA-IR) in Adults with Type 2 Diabetes. J Sports Med Phys Fitness.,54(2), 203–9.
Sibley, B.A. (2012). Using Sport Education to Implement a CrossFit Unit. J Phys Educ Recreat Dance., 83(8), 42–48. https://doi.org/10.1080/07303084.2012.10598829
Thompson, W. Worldwide Survey of Fitness Trends for 2017: ACSM's Health & Fitness Journal, 2016. Available at: http://journals.lww.com/acsm-healthfitness/Fulltext/2016/11000/WORLDWIDE_SURVEY_OF_FITNESS_TRENDS_FOR_2017.6.aspx; Accessed 11.21.2016
Whyte, L.J., Ferguson, C., Wilson, J., Scott, R.A., Gill, J.M.R. (2013). Effects of Single Bout of Very High-Intensity Exercise on Metabolic Health Biomarkers in Overweight/Obese Sedentary Men. Metabolism, 62(2), 212–19. https://doi.org/10.1016/j.metabol.2012.07.019
DOI: https://doi.org/10.14198/jhse.2017.123.15
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