Change in maximal fat oxidation in response to different regimes of periodized high-intensity interval training (HIIT)

2018 ◽  
Vol 118 (9) ◽  
pp. 2033-2034
Author(s):  
Todd Anthony Astorino ◽  
Ross M. Edmunds ◽  
Amy Clark ◽  
Rachael Gallant ◽  
Leesa King ◽  
...  
Keyword(s):  
High Intensity ◽  
Interval Training ◽  
Fat Oxidation ◽  
High Intensity Interval Training ◽  
Maximal Fat Oxidation ◽  
High Intensity Interval

scholarly journals Effect of Ethnicity on Changes in Fat and Carbohydrate Oxidation in Response to Short-Term High Intensity Interval Training (HIIT): A Pilot Study

2021 ◽  
Vol 18 (8) ◽  
pp. 4314
Author(s):  
Todd A. Astorino ◽  
Jamie L. De Revere
Keyword(s):  
High Intensity ◽  
Intraclass Correlation ◽  
Training Session ◽  
Interval Training ◽  
Fat Oxidation ◽  
Carbohydrate Oxidation ◽  
Peak Power Output ◽  
High Intensity Interval Training ◽  
Maximal Fat Oxidation ◽  
High Intensity Interval

This study compared changes in substrate metabolism with high intensity interval training (HIIT) in women of different ethnicities. Twelve Caucasian (C) and ten Hispanic women (H) (age = 24 ± 5 yr) who were inactive completed nine sessions of HIIT at 85 percent peak power output (%PPO). Pre-training, changes in fat oxidation (FOx) and carbohydrate oxidation (CHOOx) during progressive cycling were measured on two days to compute the minimum difference (MD). This test was repeated after the last training session. Between baseline tests, estimates of FOx and CHOOx were not different (p > 0.05) and were highly related (intraclass correlation coefficient equal to 0.72 to 0.88), although the coefficient of variation of maximal fat oxidation (MFO) was equal to 30%. Training significantly increased MFO (p = 0.03) in C (0.19 ± 0.06 g/min to 0.21 ± 0.06 g/min, d = 0.66) and H (0.16 ± 0.03 g/min to 0.19 ± 0.03 g/min, d = 1.3) that was similar (p = 0.92) between groups. There was a significant interaction for FOx (p = 0.003) as it was only increased in H versus C, although both groups exhibited reduced CHO oxidation (p = 0.002) with training. Use of MD revealed that only 3 of 22 women show meaningful increases in MFO (>0.08 g/min). The preliminary data reveals that a small dose of low-volume HIIT does not alter fat and CHO oxidation and there is little effect of ethnicity on the response to training.

Change in maximal fat oxidation in response to different regimes of periodized high-intensity interval training (HIIT)

2017 ◽  
Vol 117 (4) ◽  
pp. 745-755 ◽  
Author(s):  
Todd A. Astorino ◽  
Ross M. Edmunds ◽  
Amy Clark ◽  
Rachael Gallant ◽  
Leesa King ◽  
...  
Keyword(s):  
High Intensity ◽  
Interval Training ◽  
Fat Oxidation ◽  
High Intensity Interval Training ◽  
Maximal Fat Oxidation ◽  
High Intensity Interval

scholarly journals Effects of Two Workload-Matched High-Intensity Interval Training Protocols on Regional Body Composition and Fat Oxidation in Obese Men

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1096
Author(s):  
Spyridon Tsirigkakis ◽  
George Mastorakos ◽  
Yiannis Koutedakis ◽  
Vassilis Mougios ◽  
Alan M. Nevill ◽  
...  
Keyword(s):  
Body Composition ◽  
High Intensity ◽  
Interval Training ◽  
Fat Oxidation ◽  
Peak Oxygen Uptake ◽  
High Intensity Interval Training ◽  
Randomized Design ◽  
Wide Range ◽  
Regional Body Composition ◽  
High Intensity Interval

The effects of two high-intensity interval training (HIIT) protocols on regional body composition and fat oxidation in men with obesity were compared using a parallel randomized design. Sixteen inactive males (age, 38.9 ± 7.3 years; body fat, 31.8 ± 3.9%; peak oxygen uptake, VO2peak, 30.9 ± 4.1 mL/kg/min; all mean ± SD) were randomly assigned to either HIIT10 (48 × 10 s bouts at 100% of peak power [Wpeak] with 15 s of recovery) or HIIT60 group (8 × 60 s bouts at 100% Wpeak with 90 s of recovery), and subsequently completed eight weeks of training, while maintaining the same diet. Analyses of variance (ANOVA) showed only a main effect of time (p < 0.01) and no group or interaction effects (p > 0.05) in the examined parameters. Total and trunk fat mass decreased by 1.81 kg (90%CI: −2.63 to −0.99 kg; p = 0.002) and 1.45 kg (90%CI: −1.95 to −0.94 kg; p < 0.001), respectively, while leg lean mass increased by 0.86 kg (90%CI: 0.63 to 1.08 kg; p < 0.001), following both HIIT protocols. HIIT increased peak fat oxidation (PFO) (from 0.20 ± 0.05 to 0.33 ± 0.08 g/min, p = 0.001), as well as fat oxidation over a wide range of submaximal exercise intensities, and shifted PFO to higher intensity (from 33.6 ± 4.6 to 37.6 ± 6.7% VO2peak, p = 0.039). HIIT, irrespective of protocol, improved VO2peak by 20.0 ± 7.2% (p < 0.001), while blood lactate at various submaximal intensities decreased by 20.6% (p = 0.001). In conclusion, both HIIT protocols were equally effective in improving regional body composition and fat oxidation during exercise in obese men.

Improvements in insulin sensitivity and whole-body fat oxidation after a period of high-intensity interval training

2010 ◽  
Vol 44 (14) ◽  
pp. i11-i11 ◽  
Author(s):  
S. O. Shepherd ◽  
M. Cocks ◽  
K. D. Tipton ◽  
A. J. M. Wagenmakers ◽  
C. S. Shaw
Keyword(s):  
Insulin Sensitivity ◽  
Body Fat ◽  
High Intensity ◽  
Interval Training ◽  
Fat Oxidation ◽  
Whole Body ◽  
High Intensity Interval Training ◽  
High Intensity Interval
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