Abstract
To describe and compare the acute heart rate changes during an incremental exercise test and high-intensity interval training (HIIT) in subjects of different glucose control. Seventy-five adults were allocated into three groups: Normoglycaemic (NG, n= 32), Pre- (PreT2D, n= 30) and Type 2 diabetic (T2D, n= 13) subjects. Subjects performed an incremental cycling test to determine cardiorespiratory fitness (VO (2) max), maximum heart rate (HRmax) and HR recovery post maximal effort, as well as a HIIT cycling session. HR variations are reported as HR pre (HR-pre (INT) ), and post interval (HR-post (INT) ), percentage of maximum HR (%HRmax), delta of HR increased ( increment HR (INT) ), and delta HR recovery after each interval ( increment HRR). By groups, there was a significant difference for the %HRmax in 1 (st) and 2 (nd) , but not in intervals 3 (rd) to 10 (th) between Pre-T2D and T2D groups. There were significant differences for the %HRmax in 1 (st) to 2 (nd) intervals between Pre-T2D and T2D groups. Significant ( P< 0.05) differences at some intervals were found for Delta HR (INT) , and Delta HRR. These findings suggest that the HR during an incremental exercise test, and from a typical 10-intervals based HIIT protocol could be used as an intensity marker for individuals independent of their glycaemic control.
Original language | English |
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Pages (from-to) | 365-372 |
Number of pages | 8 |
Journal | International Journal of Sports Medicine |
Volume | 41 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jun 2020 |
Keywords
- capacity
- cardiometabolic disease
- chronotropic incompetence
- diabetes mellitus type 2
- exercise
- fat
- heart rate
- high-intensity interval training
- increases
- low-volume
- physiological adaptations
- prediabetes
- CAPACITY
- INCREASES
- PHYSIOLOGICAL ADAPTATIONS
- CHRONOTROPIC INCOMPETENCE
- FAT
- LOW-VOLUME
- CARDIOMETABOLIC DISEASE