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Santos-Silva PR, Greve JMD, Novillo HNE, Haddad S, Santos CRP, Leme RB, Franco RR, Cominato L, Araújo ATM, Santos FM, Damiani D, Rica RL, Bocalini DS. Futsal improve body composition and cardiorespiratory fitness in overweight and obese children. A pilot study. Motriz: rev educ fis 2018. [DOI: 10.1590/s1980-657420180003e003618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Coratella G, Limonta E, Cé E, Longo S, Bisconti AV, Montaruli A, Schena F, Esposito F. Running fatiguing protocol affects peak torque joint angle and peak torque differently in hamstrings vs. quadriceps. Sport Sci Health 2018. [DOI: 10.1007/s11332-018-0429-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mendham AE, Duffield R, Coutts AJ, Marino FE, Boyko A, McAinch AJ, Bishop DJ. Similar mitochondrial signaling responses to a single bout of continuous or small-sided-games-based exercise in sedentary men. J Appl Physiol (1985) 2016; 121:1326-1334. [DOI: 10.1152/japplphysiol.00289.2016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 10/03/2016] [Accepted: 10/09/2016] [Indexed: 12/14/2022] Open
Abstract
This study assessed the mitochondrial related signaling responses to a single bout of noncontact, modified football (touch rugby), played as small-sided games (SSG), or cycling (CYC) exercise in sedentary, obese, middle-aged men. In a randomized, crossover design, nine middle-aged, sedentary, obese men completed two, 40-min exercise conditions (CYC and SSG) separated by a 21-day recovery period. Heart rate (HR) and ratings of perceived exertion (RPE) were collected during each bout. Needle biopsies from the vastus lateralis muscle were collected at rest and 30 and 240 min postexercise for analysis of protein content and phosphorylation (PGC-1α, SIRT1, p53, p53Ser15, AMPK, AMPKThr172, CAMKII, CAMKIIThr286, p38MAPK, and p38MAPKThr180/Tyr182) and mRNA expression (PGC-1α, p53, NRF1, NRF2, Tfam, and cytochrome c). A main effect of time effect for both conditions was evident for HR, RPE, and blood lactate ( P < 0.05), with no condition by time interaction ( P > 0.05). Both conditions increased PGC1-α protein and mRNA expression at 240 min ( P < 0.05). AMPKThr172 increased 30 min post CYC ( P < 0.05), with no change in SSG ( P > 0.05). CYC increased p53 protein content at 240 min to a greater extent than SSG ( P < 0.05). mRNA expression of NRF2 decreased in both conditions ( P < 0.05). No condition by time interactions were evident for mRNA expression of Tfam, NRF1, cytochrome c, and p53. The similar PGC-1α response between intensity-matched conditions suggests both conditions are of similar benefit for stimulating mitochondrial biogenesis. Differences between conditions regarding fluctuation in exercise intensity and type of muscle contraction may explain the increase of p53 and AMPK within CYC and not SSG (noncontact, modified football).
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Affiliation(s)
- Amy E. Mendham
- Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South Africa
- School of Exercise Science, Sport and Health, Charles Sturt University, Bathurst, New South Wales, Australia
| | - Rob Duffield
- Sport and Exercise Discipline Group, UTS: Health, University of Technology Sydney (UTS), Moore Park, New South Wales, Australia
| | - Aaron J. Coutts
- Sport and Exercise Discipline Group, UTS: Health, University of Technology Sydney (UTS), Moore Park, New South Wales, Australia
| | - Frank E. Marino
- School of Exercise Science, Sport and Health, Charles Sturt University, Bathurst, New South Wales, Australia
| | - Andriy Boyko
- Sport and Exercise Discipline Group, UTS: Health, University of Technology Sydney (UTS), Moore Park, New South Wales, Australia
| | - Andrew J. McAinch
- Centre for Chronic Diseases, College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia; and
| | - David John Bishop
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia; and
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
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Mendham AE, Duffield R, Coutts AJ, Marino F, Boyko A, Bishop DJ. Rugby-specific small-sided games training is an effective alternative to stationary cycling at reducing clinical risk factors associated with the development of type 2 diabetes: a randomized, controlled trial. PLoS One 2015; 10:e0127548. [PMID: 26030423 DOI: 10.1371/journal.pone.0127548] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 04/10/2015] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION The present study investigated whether rugby small-sided games (SSG) could be an effective alternative to continuous stationary cycling (CYC) training at reducing clinical risk factors associated with the development of type 2 diabetes mellitus (T2DM). METHODS Thirty-three middle-aged (48.6±6.6y), inactive men were randomized into a CYC (n=11), SSG (n=11), or control (CON, n=11) group. Participants trained 3d·wk(-1) for 8 weeks, while control participants maintained normal activity and dietary patterns. Exercise duration was matched between groups, which involved CYC or SSG (four quarters, interspersed with 2-min passive recovery). Both training programs were designed to induce similar internal loads of maximal heart rate (~80-85%HRmax) and rating of perceived exertion. Pre- and post-intervention testing included dual-energy x-ray absorptiometry scan, graded exercise test, fasting 2 h oral glucose tolerance test and resting muscle biopsy. Western blotting was used to assess the content of skeletal muscle proteins associated with mitochondrial biogenesis and glucose regulation. RESULTS Both CYC and SSG increased VO2 at 80%HRmax, and reduced glycated haemoglobin, glucose area under the curve (AUC; SSG, -2.3±2.4; CYC -2.2±1.6 mmol·L(1)(120 min)(1); p<0.05), and total body fat-mass (SSG -2.6±0.9%; CYC -2.9±1.1%), compared to no change in CON (p<0.05). SSG reduced insulin AUC (-30.4±40.7 µlU·mL(1)(120 min)(1); p<0.05) and increased total body fat-free mass (1.1±1.2 kg; p<0.05), with no change in CYC or CON (P>0.05). There were no differences within or between conditions for protein content of peroxisome proliferator-activated receptor gamma coactivator-1α, sirtuin-1, p53, glucose transporter-4, protein kinase AKT/PKB, myocyte enhancer factor 2A, mitochondrial transcription factor, nuclear respiratory factor (NRF)-1, NRF-2 or mitochondrial complexes I-V (p>0.05). CONCLUSION Rugby small-sided games is an effective alternative to continuous cycling for improving metabolic risk-factors associated with the prevention of T2DM. Despite such positive adaptations in clinical risk factors, there were no changes in the content of skeletal muscle proteins associated with glucose regulation and mitochondrial biogenesis. TRIAL REGISTRATION Australian New Zealand Clinical Trial Registry ACTRN12613000874718.
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