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Passos MEP, Borges L, dos Santos-Oliveira LC, Alecrim-Zeza AL, Lobato TB, de Oliveira HH, Santos CMM, Diniz VLS, Iser-Bem PN, Manoel R, Murata GM, Hirabara SM, Curi R, Pithon-Curi TC, Hatanaka E, Gorjao R. Recreational Dance Practice Modulates Lymphocyte Profile and Function in Diabetic Women. Int J Sports Med 2020; 42:749-759. [DOI: 10.1055/a-1309-2037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AbstractThis study aimed to investigate the impact of a 16-week dance-based aerobic exercise program on lymphocyte function in healthy and type 2 diabetes mellitus (T2DM) women. We enrolled 23 women: 11 with T2DM and 12 non-diabetic controls. Initially, we performed anthropometry and body composition measurements, afterwards, plasma levels of C-reactive protein, lipids, and glucose were determined. We used flow cytometry to measure the CD25 and CD28 expression in circulating lymphocytes, T-regulatory (Treg) cell percentage, lymphocyte proliferation, and cytokines released by cultured lymphocytes. The T2DM group had a lower proportion of CD28+ cells and a higher percentage of Treg lymphocytes and proliferative capacity at the baseline compared with the control group. After 16 weeks of the program, differences in lymphocytes between the T2DM and the control groups disappeared. The dance program promoted IL-10 increase in both groups. We found decreased IL-4, IL-2, and IL-6 secretion in lymphocytes from the control group and increased IL-17 secretion and IL-10/IL-17 ratio in the T2DM group after the program. The program promoted marked changes in lymphocytes in diabetic women, leading to a balance between the different profiles.
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Affiliation(s)
- Maria Elizabeth Pereira Passos
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
- Department of Laboratory Medicine, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - Leandro Borges
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | | | | | - Tiago Bertola Lobato
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | | | | | | | | | - Richelieau Manoel
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Gilson Masahiro Murata
- Department of Medical Clinic, Sao Paulo University Faculty of Medicine, Sao Paulo, Brazil
| | - Sandro Massao Hirabara
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Rui Curi
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
- Butantan Institute, Sao Paulo, Brazil
| | | | - Elaine Hatanaka
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Renata Gorjao
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
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Silva BS, Gobatto CA, Manchado-Gobatto FDB, Sulinski LMP, Belli T. Influence of Adventure Race Disciplines on the Overall Performance during 35 to 50-km Races. MOTRIZ: REVISTA DE EDUCACAO FISICA 2020. [DOI: 10.1590/s1980-6574202000030165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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3
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Increased nuclear DNA damage precedes mitochondrial dysfunction in peripheral blood mononuclear cells from Huntington's disease patients. Sci Rep 2018; 8:9817. [PMID: 29959348 PMCID: PMC6026140 DOI: 10.1038/s41598-018-27985-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/12/2018] [Indexed: 01/08/2023] Open
Abstract
Huntington’s disease (HD) is a progressive neurodegenerative disorder primarily affecting the basal ganglia and is caused by expanded CAG repeats in the huntingtin gene. Except for CAG sizing, mitochondrial and nuclear DNA (mtDNA and nDNA) parameters have not yet proven to be representative biomarkers for disease and future therapy. Here, we identified a general suppression of genes associated with aerobic metabolism in peripheral blood mononuclear cells (PBMCs) from HD patients compared to controls. In HD, the complex II subunit SDHB was lowered although not sufficiently to affect complex II activity. Nevertheless, we found decreased level of factors associated with mitochondrial biogenesis and an associated dampening of the mitochondrial DNA damage frequency in HD, implying an early defect in mitochondrial activity. In contrast to mtDNA, nDNA from HD patients was four-fold more modified than controls and demonstrated that nDNA integrity is severely reduced in HD. Interestingly, the level of nDNA damage correlated inversely with the total functional capacity (TFC) score; an established functional score of HD. Our data show that PBMCs are a promising source to monitor HD progression and highlights nDNA damage and diverging mitochondrial and nuclear genome responses representing early cellular impairments in HD.
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Fagundes ADO, Monteiro EP, Franzoni LT, Fraga BS, Pantoja PD, Fischer G, Peyré-Tartaruga LA. Effects of load carriage on physiological determinants in adventure racers. PLoS One 2017; 12:e0189516. [PMID: 29216289 PMCID: PMC5720778 DOI: 10.1371/journal.pone.0189516] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 11/28/2017] [Indexed: 11/29/2022] Open
Abstract
Adventure racing athletes need run carrying loads during the race. A better understanding of how different loads influence physiological determinants in adventure racers could provide useful insights to gauge training interventions to improve running performance. We compare the maximum oxygen uptake (VO2max), the cost of transport (C) and ventilatory thresholds of twelve adventure running athletes at three load conditions: unloaded, 7 and 15% of body mass. Twelve healthy men experienced athletes of Adventure Racing (age 31.3 ± 7.7 years, height 1.81 ± 0.05 m, body mass 75.5 ± 9.1 kg) carried out three maximal progressive (VO2max protocol) and three submaximal constant-load (running cost protocol) tests, defined in the following quasi-randomized conditions: unloaded, 7% and, 15% of body mass. The VO2max (unload: 59.7 ± 5.9; 7%: 61.7 ± 6.6 and 15%: 64.6 ± 5.4 ml kg-1 min-1) did not change among the conditions. While the 7% condition does neither modify the C nor the ventilatory thresholds, the 15% condition resulted in a higher C (5.2 ± 0.9 J kg-1 m-1; P = 0.001; d = 1.48) than the unloaded condition (4.0 ± 0.7 J kg-1 m-1). First ventilatory threshold was greater at 15% than control condition (+15.5%; P = 0.003; d = 1.44). Interestingly, the velocities on the severe-intensity domain (between second ventilatory threshold and VO2max) were reduced 1% equivalently to 1% increasing load (relative to body mass). The loading until 15% of body mass seems to affect partially the crucial metabolic and ventilatory parameters, specifically the C but not the VO2max. These findings are compatible with the concept that interventions that enhance running economy with loads may improve the running performance of adventure racing’s athletes.
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Affiliation(s)
- Alex de O. Fagundes
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Elren P. Monteiro
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Neurosciences and Rehabilitation Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Leandro T. Franzoni
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruna S. Fraga
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patrícia D. Pantoja
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Gabriela Fischer
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Leonardo A. Peyré-Tartaruga
- Exercise Research Laboratory, Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Post-Graduation in Pulmonology Science, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Brazil
- * E-mail:
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Kuwabara WMT, Curi R, Alba-Loureiro TC. Autophagy Is Impaired in Neutrophils from Streptozotocin-Induced Diabetic Rats. Front Immunol 2017; 8:24. [PMID: 28163707 PMCID: PMC5247474 DOI: 10.3389/fimmu.2017.00024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 01/06/2017] [Indexed: 01/14/2023] Open
Abstract
We tested the hypothesis that changes reported on functions of neutrophils from streptozotocin-induced diabetic rats involve autophagy impairment. Wistar rats were rendered diabetic by streptozotocin injection (65 mg/kg, i.v.), and the measurements were carried out 2 weeks afterward. Neutrophils were collected through intraperitoneal cavity lavage after 4 h of i.p. oyster glycogen type 2 injection. Neutrophils cultured with PMA (20 nM) for 1 h were used for analysis of plasma membrane integrity, DNA fragmentation, and mitochondrial depolarization by flow cytometry; expression of Atg5, Atg14, Beclin1, LC3BII, and Rab9 by RT-PCR; the contents of caspase 3, LC3BII/LC3BI, and pS6 by western blotting; ATP content by fluorescence essay; reactive oxygen species production by chemiluminescence (Luminol), and autophagy by immunofluorescence tracking LC3B cleavage. Herein, neutrophils from diabetic rats had high DNA fragmentation, depolarization of mitochondrial membrane, low content of ATP, and high content of cleaved caspase 3 after PMA stimulation. Neutrophils from diabetic rats also had low expression of LC3B, failed to increase the expression of Rab9 and Atg14 induced by PMA stimulation. Neutrophils from diabetic animals also had low cleavage of LC3BI to LC3BII and do not present punctate structures that label autophagosomal membranes after stimulus. The changes of neutrophil function reported in diabetic rats do involve impaired autophagy. The suppression of autophagy in neutrophils from diabetic rats may be associated with the activation of the mTOR signaling as indicated by the high content of pS6.
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Affiliation(s)
| | - Rui Curi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo , São Paulo , Brazil
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Greater muscle damage in athletes with ACTN3 R577X (RS1815739) gene polymorphism after an ultra-endurance race: a pilot study. Biol Sport 2017; 34:105-110. [PMID: 28566803 PMCID: PMC5424449 DOI: 10.5114/biolsport.2017.64583] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 09/17/2016] [Accepted: 10/26/2016] [Indexed: 11/26/2022] Open
Abstract
In this study, we aimed to investigate the influence of ACTN3 R577X gene polymorphism on muscle damage responses in athletes competing in an ultra-endurance race. Twenty moderate to well-trained ultra-runners who had entered in an official 37.1 km adventure race (22.1 km mountain biking, 10.9 km trekking, 4.1 km water trekking, 30 m rope course, and orienteering) volunteered for the study. Blood samples were collected for genotyping and analysis of muscle protein levels before and after the race. Percentage changes (pre- to post-race) of serum myoglobin [XX = 5,377% vs. RX/RR = 1,666%; P = 0.005, effect size (ES) = 1.73], creatine kinase (XX = 836.5% vs. RX/RR = 455%; P = 0.04, ES = 1.29), lactate dehydrogenase (XX = 82% vs. RX/RR = 65%; P = 0.002, ES = 1.61), and aspartate aminotransferase (XX = 148% vs. RX/RR = 75%; P = 0.02, ES = 1.77) were significantly greater for XX than RX/RR genotypes. ES analysis confirmed a large magnitude of muscle damage in XX genotype ultra-runners. Therefore, athletes with the ACTN3 577XX genotype experienced more muscle damage after an adventure race. This suggests that ultra-runners with alpha-actinin-3 deficiency may be more susceptible to rhabdomyolysis and associated health complications during ultra-endurance competitions.
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7
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Braz GR, Ferreira DS, Pedroza AA, da Silva AI, Sousa SM, Pithon-Curi TC, Lagranha C. Effect of moderate exercise on peritoneal neutrophils from juvenile rats. Appl Physiol Nutr Metab 2015; 40:959-62. [DOI: 10.1139/apnm-2015-0056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Previous studies showed that moderate exercise in adult rats enhances neutrophil function, although no studies were performed in juvenile rats. We evaluated the effects of moderate exercise on the neutrophil function in juvenile rats. Viability and neutrophils function were evaluated. Moderate exercise did not impair the viability and mitochondrial transmembrane potential of neutrophils, whereas there was greater reactive oxygen species production (164%; p < 0.001) and phagocytic capacity (29%; p < 0.05). Our results suggest that moderate exercise in juvenile rats improves neutrophil function, similar to adults.
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Affiliation(s)
- Glauber Ruda Braz
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
| | - Diorginis Soares Ferreira
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
| | - Anderson Apolonio Pedroza
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
| | - Aline Isabel da Silva
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
| | - Shirley Maria Sousa
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
| | - Tania Cristina Pithon-Curi
- Post-Graduate Program in Human Movement Sciences, Institute of Physical Activity Sciences and Sports, Cruzeiro do Sul University, São Paulo, Brazil
| | - Claudia Lagranha
- Laboratory of Biochemistry and Exercise Biochemistry, CAV-Federal University of Pernambuco, Pernambuco 55608-680, Brazil
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Tossige-Gomes R, Ottone VO, Oliveira PN, Viana DJS, Araújo TL, Gripp FJ, Rocha-Vieira E. Leukocytosis, muscle damage and increased lymphocyte proliferative response after an adventure sprint race. ACTA ACUST UNITED AC 2014; 47:492-8. [PMID: 24676476 PMCID: PMC4086176 DOI: 10.1590/1414-431x20143187] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 01/22/2014] [Indexed: 12/23/2022]
Abstract
The effect of an adventure sprint race (ASR) on T-cell proliferation, leukocyte count
and muscle damage was evaluated. Seven young male runners completed an ASR in the
region of Serra do Espinhaço, Brazil. The race induced a strong leukocytosis
(6.22±2.04×103 cells/mm3 before vs
14.81±3.53×103 cells/mm3 after the race), marked by a
significant increase of neutrophils and monocytes (P<0.05), but not total
lymphocytes, CD3+CD4+ or CD3+CD8+ cells.
However, the T-cell proliferative response to mitogenic stimulation was increased
(P=0.025) after the race, which contradicted our hypothesis that ASR, as a
high-demand competition, would inhibit T-cell proliferation. A positive correlation
(P=0.03, r=0.79) was observed between the proliferative response of lymphocytes after
the race and the time to complete the race, suggesting that the proliferative
response was dependent on exercise intensity. Muscle damage was evident after the
race by increased serum levels of aspartate amino transferase (24.99±8.30
vs 50.61±15.76 U/L, P=0.003). The results suggest that humoral
factors and substances released by damaged muscle may be responsible for lymphocyte
activation, which may be involved in muscle recovery and repair.
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Affiliation(s)
- R Tossige-Gomes
- Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - V O Ottone
- Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - P N Oliveira
- Departamento de Educação Física, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - D J S Viana
- Departamento de Educação Física, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - T L Araújo
- Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - F J Gripp
- Departamento de Educação Física, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - E Rocha-Vieira
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
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Chronic inflammation and neutrophil activation as possible causes of joint diseases in ballet dancers. Mediators Inflamm 2014; 2014:846021. [PMID: 24701035 PMCID: PMC3950498 DOI: 10.1155/2014/846021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/31/2013] [Accepted: 01/13/2014] [Indexed: 01/18/2023] Open
Abstract
Herein, we investigated the effects of a ballet class on the kinetic profiles of creatine kinase (CK) and lactate dehydrogenase (LDH) activities, cytokines, complement component 3 (C3), and the concentrations of immunoglobulin (Ig), IgA and IgM, in ballerinas. We also verified neutrophil death and ROS release. Blood samples were taken from 13 dancers before, immediately after, and 18 hours after a ballet class. The ballet class increased the plasma activities of CK-total (2.0-fold) immediately after class, while the activities of CK-cardiac muscle (1.0-fold) and LDH (3.0-fold) were observed to increase 18 hours after the class. Levels of the TNF-α, IL-1β, IgG, and IgA were not affected under the study conditions. The exercise was found to induce neutrophil apoptosis (6.0-fold) 18 hours after the ballet class. Additionally, immediately after the ballet class, the neutrophils from the ballerinas were found to be less responsive to PMA stimulus. Conclusion. Ballet class was found to result in inflammation in dancers. The inflammation caused by the ballet class remained for 18 hours after the exercise. These findings are important in preventing the development of chronic lesions that are commonly observed in dancers, such as those with arthritis and synovitis.
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Abstract
Adventure racing requires competitors to perform various disciplines ranging from, but not limited to, mountain biking, running, kayaking, climbing, mountaineering, flat- and white-water boating and orienteering over a rugged, often remote and wilderness terrain. Races can vary from 6 hours to expedition-length events that can last up to 10-consecutive days or more. The purpose of this article is to provide evidence-based nutritional recommendations for adventure racing competitors. Energy expenditures of 365-750 kcal/hour have been reported with total energy expenditures of 18 000-80 000 kcal required to complete adventure races, and large negative energy balances during competitions have been reported. Nutrition, therefore, plays a major role in the successful completion of such ultra-endurance events. Conducting research in these events is challenging and the limited studies investigating dietary surveys and nutritional status of adventure racers indicate that competitors do not meet nutrition recommendations for ultra-endurance exercise. Carbohydrate intakes of 7-12 g/kg are needed during periods of prolonged training to meet requirements and replenish glycogen stores. Protein intakes of 1.4-1.7 g/kg are recommended to build and repair tissue. Adequate replacement of fluid and electrolytes are crucial, particularly during extreme temperatures; however, sweat rates can vary greatly between competitors. There is considerable evidence to support the use of sports drinks, gels and bars, as they are a convenient and portable source of carbohydrate that can be consumed during exercise, in training and in competition. Similarly, protein and amino acid supplements can be useful to help meet periods of increased protein requirements. Caffeine can be used as an ergogenic aid to help competitors stay awake during prolonged periods, enhance glycogen resynthesis and enhance endurance performance.
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Affiliation(s)
- Mayur K Ranchordas
- Sheffield Hallam University, Academy of Sport and Physical Activity, Collegiate Crescent Campus, Sheffield, UK.
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11
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Ranchordas MK. Nutrition for adventure racing. Sports Med 2012. [PMID: 23006142 DOI: 10.2165/11635130-000000000-00000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Adventure racing requires competitors to perform various disciplines ranging from, but not limited to, mountain biking, running, kayaking, climbing, mountaineering, flat- and white-water boating and orienteering over a rugged, often remote and wilderness terrain. Races can vary from 6 hours to expedition-length events that can last up to 10-consecutive days or more. The purpose of this article is to provide evidence-based nutritional recommendations for adventure racing competitors. Energy expenditures of 365-750 kcal/hour have been reported with total energy expenditures of 18 000-80 000 kcal required to complete adventure races, and large negative energy balances during competitions have been reported. Nutrition, therefore, plays a major role in the successful completion of such ultra-endurance events. Conducting research in these events is challenging and the limited studies investigating dietary surveys and nutritional status of adventure racers indicate that competitors do not meet nutrition recommendations for ultra-endurance exercise. Carbohydrate intakes of 7-12 g/kg are needed during periods of prolonged training to meet requirements and replenish glycogen stores. Protein intakes of 1.4-1.7 g/kg are recommended to build and repair tissue. Adequate replacement of fluid and electrolytes are crucial, particularly during extreme temperatures; however, sweat rates can vary greatly between competitors. There is considerable evidence to support the use of sports drinks, gels and bars, as they are a convenient and portable source of carbohydrate that can be consumed during exercise, in training and in competition. Similarly, protein and amino acid supplements can be useful to help meet periods of increased protein requirements. Caffeine can be used as an ergogenic aid to help competitors stay awake during prolonged periods, enhance glycogen resynthesis and enhance endurance performance.
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Affiliation(s)
- Mayur K Ranchordas
- Sheffield Hallam University, Academy of Sport and Physical Activity, Collegiate Crescent Campus, Sheffield, UK.
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de Moura NR, Cury-Boaventura MF, Santos VC, Levada-Pires AC, Bortolon J, Fiamoncini J, Pithon-Curi TC, Curi R, Hatanaka E. Inflammatory Response and Neutrophil Functions in Players After a Futsal Match. J Strength Cond Res 2012; 26:2507-14. [DOI: 10.1519/jsc.0b013e31823f29b5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Goulart-Silva F, Serrano-Nascimento C, Nunes M. Hypothyroidism decreases proinsulin gene expression and the attachment of its mRNA and eEF1A protein to the actin cytoskeleton of INS-1E cells. Braz J Med Biol Res 2011; 44:1060-7. [DOI: 10.1590/s0100-879x2011007500121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 08/31/2011] [Indexed: 11/22/2022] Open
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Masi LN, Portioli-Sanches EP, Lima-Salgado TM, Curi R. Toxicity of fatty acids on ECV-304 endothelial cells. Toxicol In Vitro 2011; 25:2140-6. [PMID: 21723937 DOI: 10.1016/j.tiv.2011.06.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/13/2011] [Accepted: 06/16/2011] [Indexed: 01/26/2023]
Abstract
The effects of stearic (saturated) or oleic (monounsaturated) acids and their combination with ω-3 and ω-6 polyunsaturated fatty acids (PUFA) on death of endothelial cells (ECV-304 cell line) were investigated. We examined: loss of plasma membrane integrity, DNA fragmentation, accumulation of neutral lipids (NL) and release of reactive oxygen species (ROS). The fatty acids studied were: stearic (SA), oleic (OA), docosahexaenoic (DHA), eicosapentaenoic (EPA), linoleic (LA) and gamma-linolenic (γA) acids. SA at 150 μM induced cell death, did not lead to accumulation of NL and raised the release of ROS. ω-3 PUFA decreased ROS production, increased NL content but did not protect against ECV-304 cell death induced by SA. ω-6 PUFA inhibited SA-induced cell death, increased NL content and decreased ROS production. OA caused cell death but did not increase NL content and ROS production even at 300 μM. ω-3 and ω-6 FA associated with OA further increased cell death with no change in ROS production and NL content. Concluding, ω-6 PUFA had a greater protective effect than ω-3 PUFA on the deleterious effects caused by SA whereas OA had low cytotoxicity but, when associated with PUFA, presented marked toxic effects on ECV-304 endothelial cells.
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Affiliation(s)
- Laureane Nunes Masi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1524, 05508-900 São Paulo, Brazil.
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