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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Effects of four weeks of repeated sprint training on physiological indices in futsal players
Paulo Cesar do Nascimento,Ricardo Dantas de Lucas,Juliano Dal Pupo,Francimara Budal Arins,Carlo Castagna,Luiz Guilherme Antonacci Guglielmo +5 more
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Effect of Moderate- Versus High-Intensity Interval Exercise Training on Heart Rate Variability Parameters in Inactive Latin-American Adults: A Randomized Clinical Trial.
Robinson Ramírez-Vélez,Alejandra Tordecilla-Sanders,Luis Andrés Téllez-T,Diana Camelo-Prieto,Paula Andrea Hernández-Quiñonez,Jorge Enrique Correa-Bautista,Antonio García-Hermoso,Rodrigo Ramirez-Campillo,Mikel Izquierdo +8 more
TL;DR: In inactive adults, this study showed that a 12-week HIT training program could increase short-term HRV, mostly in vagally mediated indices such as SDNN and HF/LFLn ratio power.
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TL;DR: It is concluded that the metabolic stress produced by prolonged exercise is reversed by 1 day of recovery and adaptations which are expressed at variable recovery durations are expressed.
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Mixed martial arts: a comprehensive review
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TACI-Deficient Macrophages Protect Mice Against Metaflammation and Obesity-Induced Dysregulation of Glucose Homeostasis.
Lunhua Liu,Karen Inouye,Windy R. Allman,Adam S. Coleman,Shafiuddin Siddiqui,Gökhan S. Hotamisligil,Mustafa Akkoyunlu +6 more
TL;DR: It is demonstrated that TACI-deficient mice subjected to high-fat diet (HFD) are protected from weight gain and dysregulated glucose homeostasis and protect against metaflammation and obesity-associated dysregulation of glucose metabolism.
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