High-Intensity Interval Training as an Efficacious Alternative to Moderate-Intensity Continuous Training for Adults with Prediabetes

Abstract

Aims. High-intensity interval training (HIIT) leads to improvements in various markers of cardiometabolic health but adherence to HIIT following a supervised laboratory intervention has yet to be tested. We compared self-report and objective measures of physical activity after one month of independent exercise in individuals with prediabetes who were randomized to HIIT (n = 15) or traditional moderate-intensity continuous training (MICT, n = 17). Method. After completing 10 sessions of supervised training participants were asked to perform HIIT or MICT three times per week for four weeks. Results. Individuals in HIIT (89 ± 11%) adhered to their prescribed protocol to a greater extent than individuals in MICT (71 ± 31%) as determined by training logs completed over one-month follow-up (P = 0.05, Cohen's d = 0.75). Minutes spent in vigorous physical activity per week measured by accelerometer were higher in HIIT (24 ± 18) as compared to MICT (11 ± 10) at one-month follow-up (P = 0.049, Cohen's d = 0.92). Cardiorespiratory fitness and systolic blood pressure assessed at one-month follow-up were equally improved (P's < 0.05). Conclusions. This study provides preliminary evidence that individuals with prediabetes can adhere to HIIT over the short-term and do so at a level that is greater than MICT.

Is interval training the magic bullet for fat loss? A systematic review and meta-analysis comparing moderate-intensity continuous training with high-intensity interval training (HIIT)

“…HIIT programmes, when compared with MOD, promote greater increases in $true0\dot{V}$ O 2 max,13 ventricular and endothelial function,14 greater or comparable improvements in insulin sensitivity15 and blood pressure,16 lower ratings of perceived exertion,17 similar6 or higher levels of enjoyment,17 18 and similar6 or higher adherence18 than MOD, depending on how the programme is designed. In addition, despite lower training volume in SIT programmes, SIT may promote increases in skeletal muscle oxidative capacity,19 specific metabolic adaptations during exercise19 and exercise performance similar to MOD 20…”

Dynamic cerebral autoregulation across the cardiac cycle during 8 hr of recovery from acute exercise

“…The HIIT protocol was broken down into a warm-up, exercise, and cool-down phase, lasting a combined 25 min. A 3-min warmup was followed by ten 1-min intervals of exercise to obtain a peak heart rate within 85%-90% of predicted heart rate reserve (HRR) with 1-min active recovery periods between each minute of work at roughly 15% of the power output, consistent with previous literature (Jung, Bourne, Beauchamp, Robinson, & Little, 2015). Each individual's HRR was calculated using the Karvonen formula (Miller, Wallace, & Eggert, 1993):…”

High‐intensity interval and moderate‐intensity continuous training elicit similar enjoyment and adherence levels in overweight and obese adults

“…Research has yet to adequately evaluate HIIT as an exercise strategy that can be sustained independently, over a meaningful period of time. To our knowledge only one study to date has investigated the adherence to HIIT using multiple modes of exercise and during unsupervised conditions (Jung, Bourne, Beauchamp, Robinson, & Little, 2015). This intervention study was six weeks in duration, with two weeks of supervised conditions, in participants with prediabetes.…”