Sam N Scott1, Matt Cocks1, Rob C Andrews2, Parth Narendran3, Tejpal S Purewal4, Daniel J Cuthbertson5, Anton J M Wagenmakers1, Sam O Shepherd1. 1. Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom. 2. University of Exeter, Exeter, United Kingdom. 3. University of Birmingham, Birmingham, United Kingdom. 4. Royal Liverpool & Broadgreen University Hospital, Liverpool, United Kingdom. 5. Obesity and Endocrinology Research Group, University of Liverpool, Liverpool, United Kingdom.
Abstract
Context: We investigated whether 6 weeks of high-intensity interval training (HIT) induced improvements in cardiometabolic health markers similar to moderate-intensity continuous training (MICT) in people with type 1 diabetes (T1D), and whether HIT abolished acute reductions in plasma glucose levels observed after MICT sessions. Methods: Two groups of sedentary individuals with T1D (n = 7 per group) completed 6 weeks of thrice weekly HIT or MICT. Pre- and post-training measurements were made of 24-hour interstitial glucose profiles, using continuous glucose monitors, and cardiometabolic health markers [peak oxygen consumption (V˙o2peak), blood lipid profile, and aortic pulse wave velocity (aPWV)]. Capillary blood glucose (BG) concentrations were assessed before and after exercise to investigate changes in BG levels during exercise in the fed state. Results: Six weeks of HIT or MICT increased V˙o2peak by 14% and 15%, respectively (P < 0.001), and aPWV by 12% (P < 0.001), with no difference between groups. There was no difference in incidence or percentage of time spent in hypoglycemia after training in either group (P > 0.05). In the fed state, the mean change (±SEM) in capillary BG concentration during the HIT sessions was -0.2 ± 0.5 mmol/L, and -5.5 ± 0.4 mmol/L during MICT. Conclusions: Six weeks of HIT improved V˙o2peak and aPWV to a similar extent as MICT. That BG levels remained stable during HIT in the fed state but consistently fell during MICT suggests HIT may be the preferred training mode for some people with T1D.
Context: We investigated whether 6 weeks of high-intensity interval training (HIT) induced improvements in cardiometabolic health markers similar to moderate-intensity continuous training (MICT) in people with type 1 diabetes (T1D), and whether HIT abolished acute reductions in plasma glucose levels observed after MICT sessions. Methods: Two groups of sedentary individuals with T1D (n = 7 per group) completed 6 weeks of thrice weekly HIT or MICT. Pre- and post-training measurements were made of 24-hour interstitial glucose profiles, using continuous glucose monitors, and cardiometabolic health markers [peak oxygen consumption (V˙o2peak), blood lipid profile, and aortic pulse wave velocity (aPWV)]. Capillary blood glucose (BG) concentrations were assessed before and after exercise to investigate changes in BG levels during exercise in the fed state. Results: Six weeks of HIT or MICT increased V˙o2peak by 14% and 15%, respectively (P < 0.001), and aPWV by 12% (P < 0.001), with no difference between groups. There was no difference in incidence or percentage of time spent in hypoglycemia after training in either group (P > 0.05). In the fed state, the mean change (±SEM) in capillary BG concentration during the HIT sessions was -0.2 ± 0.5 mmol/L, and -5.5 ± 0.4 mmol/L during MICT. Conclusions: Six weeks of HIT improved V˙o2peak and aPWV to a similar extent as MICT. That BG levels remained stable during HIT in the fed state but consistently fell during MICT suggests HIT may be the preferred training mode for some people with T1D.
Authors: Angela S Lee; Nathan A Johnson; Margaret J McGill; Jane Overland; Connie Luo; Callum J Baker; Sergio Martinez-Huenchullan; Jencia Wong; Jeffrey R Flack; Stephen M Twigg Journal: Diabetes Care Date: 2020-07-09 Impact factor: 19.112
Authors: Jesús Alarcón-Gómez; Joaquín Calatayud; Iván Chulvi-Medrano; Fernando Martín-Rivera Journal: Int J Environ Res Public Health Date: 2021-01-31 Impact factor: 3.390
Authors: Jesús Alarcón-Gómez; Iván Chulvi-Medrano; Fernando Martin-Rivera; Joaquín Calatayud Journal: Int J Environ Res Public Health Date: 2021-11-30 Impact factor: 3.390