Jeppe Panduro1, Jeppe F Vigh-Larsen2, Georgios Ermidis1, Susana Póvoas1,3, Jakob Friis Schmidt4, Karen Søgaard5,6, Peter Krustrup1,7,8, Magni Mohr1,9, Morten Bredsgaard Randers10,11. 1. Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark. 2. Department of Public Health, Research Unit in Exercise Biology, Aarhus University, Aarhus, Denmark. 3. Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia, ISMAI, Maia, Portugal. 4. Section for Anaesthesia for ENT, Head Neck & Maxillofacial Surgery and Ortopedi, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. 5. Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark. 6. Department of Clinical Research, University of Southern Denmark, Odense, Denmark. 7. Sport and Health Sciences, University of Exeter, Exeter, UK. 8. Danish Institute for Advanced Study (DIAS), University of Southern Denmark, Odense, Denmark. 9. Faculty of Health, Centre of Health Sciences, University of the Faroe Islands, Tórshavn, Faroe Islands. 10. Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark. mranders@health.sdu.dk. 11. School of Sport Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsö, Norway. mranders@health.sdu.dk.
Abstract
PURPOSE: Studies have indicated upper body involvement during football, provoking long-term muscular adaptations. This study aimed at examining the acute metabolic response in upper and lower body skeletal muscle to football training organized as small-sided games (SSG). METHODS: Ten healthy male recreational football players [age 24 ± 1 (± SD) yrs; height 183 ± 4 cm; body mass 83.1 ± 9.7 kg; body fat 15.5 ± 5.4%] completed 1-h 5v5 SSG (4 × 12 min interspersed with 4-min recovery periods). Muscle biopsies were obtained from m. vastus lateralis (VL) and m. deltoideus (DE) pre- and post-SSG for muscle glycogen and metabolite analyses. Blood lactate samples were obtained at rest, middle and end of the SSG. RESULTS: Muscle glycogen in VL decreased (P < 0.01) by 21% and tended (P = 0.08) to decrease in DE by 13%. Muscle lactate increased in VL (117%; P < 0.001) and DE (81%; P < 0.001) during the game, while blood lactate rose threefold. Muscle ATP and PCr were unaltered, but intermuscular differences were detected for ATP at both time points (P < 0.001) and for PCr at pre-SSG (P < 0.05) with VL demonstrating higher values than DE, while muscle creatine rose in VL (P < 0.001) by 41% and by 22% in DE (P = 0.02). Baseline citrate synthase maximal activity was higher (P < 0.05) in VL compared to DE, whereas baseline muscle lactate concentration was higher (P < 0.05) in DE than VL. CONCLUSION: The upper body may be extensively involved during football play, but besides a rise in muscle lactate in the deltoideus muscle similar to the leg muscles, the present study did not demonstrate acute metabolic changes of an order that may explain the previously reported training effect of football play in the upper extremities.
PURPOSE: Studies have indicated upper body involvement during football, provoking long-term muscular adaptations. This study aimed at examining the acute metabolic response in upper and lower body skeletal muscle to football training organized as small-sided games (SSG). METHODS: Ten healthy male recreational football players [age 24 ± 1 (± SD) yrs; height 183 ± 4 cm; body mass 83.1 ± 9.7 kg; body fat 15.5 ± 5.4%] completed 1-h 5v5 SSG (4 × 12 min interspersed with 4-min recovery periods). Muscle biopsies were obtained from m. vastus lateralis (VL) and m. deltoideus (DE) pre- and post-SSG for muscle glycogen and metabolite analyses. Blood lactate samples were obtained at rest, middle and end of the SSG. RESULTS: Muscle glycogen in VL decreased (P < 0.01) by 21% and tended (P = 0.08) to decrease in DE by 13%. Muscle lactate increased in VL (117%; P < 0.001) and DE (81%; P < 0.001) during the game, while blood lactate rose threefold. Muscle ATP and PCr were unaltered, but intermuscular differences were detected for ATP at both time points (P < 0.001) and for PCr at pre-SSG (P < 0.05) with VL demonstrating higher values than DE, while muscle creatine rose in VL (P < 0.001) by 41% and by 22% in DE (P = 0.02). Baseline citrate synthase maximal activity was higher (P < 0.05) in VL compared to DE, whereas baseline muscle lactate concentration was higher (P < 0.05) in DE than VL. CONCLUSION: The upper body may be extensively involved during football play, but besides a rise in muscle lactate in the deltoideus muscle similar to the leg muscles, the present study did not demonstrate acute metabolic changes of an order that may explain the previously reported training effect of football play in the upper extremities.
Authors: Mads Bendiksen; Rasmus Bischoff; Morten B Randers; Magni Mohr; Ian Rollo; Charlotte Suetta; Jens Bangsbo; Peter Krustrup Journal: Med Sci Sports Exerc Date: 2012-08 Impact factor: 5.411
Authors: Dan Fransson; Jeppe Foged Vigh-Larsen; Ioannis G Fatouros; Peter Krustrup; Magni Mohr Journal: J Hum Kinet Date: 2018-03-23 Impact factor: 2.193
Authors: Dan Fransson; Tobias Schmidt Nielsen; Karl Olsson; Tobias Christensson; Paul S Bradley; Ioannis G Fatouros; Peter Krustrup; Nikolai Baastrup Nordsborg; Magni Mohr Journal: Eur J Appl Physiol Date: 2017-11-08 Impact factor: 3.078