scholarly journals Post-exercise Effects and Long-Term Training Adaptations of Hormone Sensitive Lipase Lipolysis Induced by High-Intensity Interval Training in Adipose Tissue of Mice

2020 ◽  
Vol 11 ◽  
Author(s):  
Yang Liu ◽  
Gaofang Dong ◽  
Xiaobo Zhao ◽  
Zerong Huang ◽  
Peng Li ◽  
...  
Keyword(s):  
Acute Exercise ◽  
Subcutaneous Fat ◽  
Interval Training ◽  
Hormone Sensitive Lipase ◽  
High Intensity Interval Training ◽  
Post Exercise ◽  
Hormone Sensitive ◽  
High Intensity Interval

Although studies have proven that high-intensity interval training (HIIT) shows a comparable effect to moderate-intensity continuous training (MICT) on reducing body fat, especially visceral fat, the mechanism is still unclear. Since MICT consumes more fat during exercise, the mechanism of HIIT weight loss may be related to post-exercise effects, long-term adaptive changes, and hormone sensitive lipase (HSL). The objective of this study was to compare the post-effects of acute exercise, long-term adaptive changes on HSL activity, and catecholamine-induced lipolysis between HIIT and MICT. Following a 14-week high-fat diet (HFD), obese female C57Bl/6 mice were divided into acute exercise groups (one time training, sacrificed at rest and 0, 1, and 12 h after exercise, n = 49), -L groups (12-week long-term training, 12-h fasting, n = 21), and -C groups (12-week training, primary adipocytes were isolated and stimulated by catecholamine in vitro, n = 18). MICT or HIIT treadmill protocols (running distance matched) were carried out during training. Comparison of acute exercise effects by two-way ANOVA showed no time × group interaction effect, however, a significant increase in HSL-Ser563 (at 0 and 1 h) and Ser660 phosphorylation (at 0, 1, and 12 h) in inguinal (subcutaneous) fat was only observed in HIIT mice (p < 0.05 vs. rest), but not in MICT mice. The periuterine (visceral) fat HSL expression and phosphorylation of HIIT mice was similar to or lower than MICT mice. After long-term training, 12-h fasting significantly increased periuterine fat Ser563 phosphorylation in HIIT mice (p < 0.05), but there was no change in MICT mice. Under stimulation of catecholamine in vitro, isolated primary adipocytes from periuterine fat of long-term HIIT mice showed a higher Ser563 increase than that found in MICT mice (p < 0.05). The quantity of triglyceride (TG) lipid bonds (representing lipolysis level) was significantly lower after HIIT than MICT (p < 0.05). The results indicate that (1) acute HIIT can induce an increase of HSL phosphorylation in subcutaneous fat lasting at least 12 h, implying longer post-exercise lipolysis than MICT and (2) long-time HIIT has a better effect on improving catecholamine resistance of visceral adipocytes caused by a HFD, which allows fat to be mobilized more easily when stimulated.

scholarly journals Decrease in regional body fat after long-term high-intensity interval training

2017 ◽  
Vol 6 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Koichiro Azuma ◽  
Yusuke Osawa ◽  
Shogo Tabata ◽  
Fuminori Katsukawa ◽  
Hiroyuki Ishida ◽  
...  
Keyword(s):  
Body Fat ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Regional Body Fat ◽  
High Intensity Interval

scholarly journals Post-Exercise Appetite and Ad Libitum Energy Intake in Response to High-Intensity Interval Training versus Moderate- or Vigorous-Intensity Continuous Training among Physically Inactive Middle-Aged Adults

Nutrients ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1408 ◽  
Author(s):  
Eric Poon ◽  
Feng-Hua Sun ◽  
Anthony Chung ◽  
Stephen Wong
Keyword(s):  
Energy Intake ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Middle Aged ◽  
Continuous Training ◽  
Post Exercise ◽  
Ad Libitum ◽  
High Intensity Interval ◽  
Middle Aged Adults ◽  
Physically Inactive

High-intensity interval training (HIIT) is considered a time-efficient exercise strategy for weight management. However, data regarding the acute appetite and energy intake responses to HIIT versus continuous training remain inconclusive. This study investigated the ad libitum energy intake and appetite responses to a single session of HIIT versus moderate-intensity continuous training (MICT) and vigorous-intensity continuous training (VICT). Using a randomized crossover design, 11 middle-aged physically inactive men (45.7 ± 7.4 years, 23.5 ± 2.1 kg m−2) participated in three treadmill trials at 7-day intervals. HIIT comprised 10 1-min periods at 100% VO2max interspersed with 1-min periods of active recovery. MICT comprised a 40-min session at 65% VO2max, while VICT comprised a 20-min session at 80% VO2max. After each trial, the participants consumed an ad libitum buffet meal for which the energy intake was recorded. The participants’ perceived appetite was assessed before and after exercise sessions using the Visual Analogue Scale (VAS). No significant differences in post-exercise ad libitum energy intake were observed between trials (HIIT: 645 ± 262.9 kcal; MICT: 614.7 ± 271.2 kcal; VICT: 623.1 ± 249.0 kcal, p > 0.05). Although the perceived appetite responses exhibited a significant main effect of time (p < 0.01), no group differences were observed (p > 0.05). In summary, these findings suggest that the interval or continuous nature of exercise has no significant effect on appetite responses in physically inactive middle-aged adults, at least during the short-term post-exercise period.

scholarly journals Comparison of Effects of High-Intensity Interval Training and Continuous Training on Memory and Correlation with Antioxidant Enzyme Activity in the Rat Brain

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Hossein Taheri Chadorneshin ◽  
Shila Nayebifar ◽  
Seyed-Hosein Abtahi-Eivary ◽  
Hossein Nakhaei
Keyword(s):  
High Intensity ◽  
Wistar Rats ◽  
Interval Training ◽  
Long Term Memory ◽  
High Intensity Interval Training ◽  
Continuous Training ◽  
Sod Activity ◽  
Term Memory ◽  
High Intensity Interval

Objectives: This study aimed to investigate the effects of six-week continuous training (CT) and high-intensity interval training (HIIT) protocols on brain superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) activities and their associations with short-, mid-, and long-term memory in albino Wistar rats. Methods: In this study, 18 male albino Wistar rats (5 months old) were randomly assigned to three equal (n = 6) groups of sedentary control (SC), CT, and HIIT. Both CT and HIIT regimens were performed for 6 consecutive days per week for 6 weeks. Results: Both HIIT and CT regimens increased short-, mid-, and long-term memory, and the alterations were greater following HIIT than CT. In addition, both HIIT and CT regimens significantly increased SOD activity, with a higher elevation following HIIT than CT. Moreover, brain SOD activity positively correlated with short-, mid-, and long-term memory. However, neither CT nor HIIT had a significant effect on brain GPX and CAT activities. Conclusions: The HIIT regimen is highly potential, as opposed to the CT regimen, to improve memory function through a greater increase in the SOD activity of the brain.

scholarly journals Short-term and Long-term Feasibility, Safety, and Efficacy of High-Intensity Interval Training in Cardiac Rehabilitation

2020 ◽  
Vol 5 (12) ◽  
pp. 1382
Author(s):  
Jenna L. Taylor ◽  
David J. Holland ◽  
Shelley E. Keating ◽  
Michael D. Leveritt ◽  
Sjaan R. Gomersall ◽  
...  
Keyword(s):  
Cardiac Rehabilitation ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Short Term ◽  
Safety And Efficacy ◽  
High Intensity Interval
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