Short‐term sprint interval versus traditional endurance training: similar initial adaptations in human skeletal muscle and exercise performance
Martin J. Gibala,Jonathan P. Little,Martin Van Essen,Geoffrey Wilkin,Kirsten A. Burgomaster,Adeel Safdar,Sandeep Raha,Mark A. Tarnopolsky +7 more
TLDR
Data demonstrate that SIT is a time‐efficient strategy to induce rapid adaptations in skeletal muscle and exercise performance that are comparable to ET in young active men.Abstract:
Brief, intense exercise training may induce metabolic and performance adaptations comparable to traditional endurance training. However, no study has directly compared these diverse training strategies in a standardized manner. We therefore examined changes in exercise capacity and molecular and cellular adaptations in skeletal muscle after low volume sprint-interval training (SIT) and high volume endurance training (ET). Sixteen active men (21 +/- 1 years, ) were assigned to a SIT or ET group (n = 8 each) and performed six training sessions over 14 days. Each session consisted of either four to six repeats of 30 s 'all out' cycling at approximately 250% with 4 min recovery (SIT) or 90-120 min continuous cycling at approximately 65% (ET). Training time commitment over 2 weeks was approximately 2.5 h for SIT and approximately 10.5 h for ET, and total training volume was approximately 90% lower for SIT versus ET ( approximately 630 versus approximately 6500 kJ). Training decreased the time required to complete 50 and 750 kJ cycling time trials, with no difference between groups (main effects, P </= 0.05). Biopsy samples obtained before and after training revealed similar increases in muscle oxidative capacity, as reflected by the maximal activity of cytochrome c oxidase (COX) and COX subunits II and IV protein content (main effects, P </= 0.05), but COX II and IV mRNAs were unchanged. Training-induced increases in muscle buffering capacity and glycogen content were also similar between groups (main effects, P </= 0.05). Given the large difference in training volume, these data demonstrate that SIT is a time-efficient strategy to induce rapid adaptations in skeletal muscle and exercise performance that are comparable to ET in young active men.read more
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High intensity interval training and molecular adaptive response of skeletal muscle
TL;DR: The present review summarizes the current knowledge of the adaptive response of HIIT and can induce activation of AMPK, PGC-1α, SIRT1 and ROS pathway as well as by the modulation of Ca2+ homeostasis, leading to enhanced mitochondrial biogenesis, and angiogenesis.
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Effect of speed endurance and strength training on performance, running economy and muscular adaptations in endurance-trained runners
TL;DR: Adding strength and speed endurance training, along with a reduced training volume, can improve short-term exercise capacity and induce muscular adaptations related to anaerobic capacity in endurance-trained runners.
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Utilizing small nutrient compounds as enhancers of exercise-induced mitochondrial biogenesis.
Daniel M. Craig,Stephen P. Ashcroft,Micah Y. Belew,Ben Stocks,Kevin Currell,Keith Baar,Andrew Philp +6 more
TL;DR: This review will examine proposed modes of action, discuss evidence of application in skeletal muscle in vivo and comment on the feasibility of such approaches to support endurance-training applications in humans.
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Acute Effects of Three Different Circuit Weight Training Protocols on Blood Lactate, Heart Rate, and Rating of Perceived Exertion in Recreationally Active Women
TL;DR: Comparing acute effects of three circuit weight training protocols on blood lactate (BLA), heart rate (HR), and ratings of perceived exertion (RPE) found combined circuit weight-interval training (CWIT) elicited greater RPE than traditional circuit weightTraining (TRAD) at all measures.
Journal ArticleDOI
Sprint Interval Training and Continuous Aerobic Exercise Training Have Similar Effects on Exercise Motivation and Affective Responses to Exercise in Patients With Major Depressive Disorders: A Randomized Controlled Trial
TL;DR: From a motivational point of view, SIT seems just as suited as CAT in the treatment of patients with major depressive disorders (MDD), and significant increases were observed in self-reported physical activity from baseline to post-intervention.
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