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1.
Nutrients ; 13(5)2021 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-34068512

RESUMO

Athletes often experience sleep disturbances and poor sleep as a consequence of extended travel, the timing of training and competition (i.e., early morning or evening), and muscle soreness. Nutrition plays a vital role in sports performance and recovery, and a variety of foods, beverages, and supplements purportedly have the capacity to improve sleep quality and quantity. Here, we review and discuss relevant studies regarding nutrition, foods, supplements, and beverages that may improve sleep quality and quantity. Our narrative review was supported by a semi-systematic approach to article searching, and specific inclusion and exclusion criteria, such that articles reviewed were relevant to athletes and sporting environments. Six databases-PubMed, Scopus, CINAHL, EMBASE, SPORTDiscus, and Google Scholar-were searched for initial studies of interest from inception to November 2020. Given the paucity of sleep nutrition research in the athlete population, we expanded our inclusion criteria to include studies that reported the outcomes of nutritional interventions to improve sleep in otherwise healthy adults. Carbohydrate ingestion to improve sleep parameters is inconclusive, although high glycemic index foods appear to have small benefits. Tart cherry juice can promote sleep quantity, herbal supplements can enhance sleep quality, while kiwifruit and protein interventions have been shown to improve both sleep quality and quantity. Nutritional interventions are an effective way to improve sleep quality and quantity, although further research is needed to determine the appropriate dose, source, and timing in relation to training, travel, and competition requirements.


Assuntos
Atletas , Dieta , Sono , Desempenho Atlético , Bases de Dados Factuais , Carboidratos da Dieta/administração & dosagem , Proteínas Alimentares/administração & dosagem , Suplementos Nutricionais , Frutas , Sucos de Frutas e Vegetais , Humanos , Mialgia/dietoterapia , Estudos Observacionais como Assunto , Ensaios Clínicos Controlados Aleatórios como Assunto
2.
Int J Med Sci ; 18(12): 2641-2652, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34104096

RESUMO

Excessive exercise load can cause muscle soreness and fatigue, as well as inflammation and oxidative stress. Lemon verbena (Aloysia triphylla; Lippia citriodora) is often used as a spice in tea or beverages. Its leaves are rich in polyphenols, which have antioxidant and anti-inflammatory bioactivities. In the present study, we investigated whether supplementation with Planox® lemon verbena extract (LVE) could improve muscle damage and biochemical indicators after exhaustive exercise challenge. All subjects (30 males and 30 females) underwent a double-blind trial and were randomly divided into a placebo group (0 mg/human/day) and an LVE supplement group (400 mg/human/day), with gender-equal distribution. All subjects started supplementation 10 days before exhaustive exercise and continued it until all tests were completed. Before the intervention, after the exhaustive exercise, and on the following 3 days, the participants underwent 12-minute Cooper running/walking; blood collection; assessments of pain, muscle stiffness, maximum jump heights, and isometric maximum muscle strength. The results showed that supplementation with LVE effectively increased GPx and reduced CK, IL-6, 8-OHdG and muscle pain after the exhaustive exercise, but it had significant effect on strength recovery. In summary, LVE is a safe and edible natural plant extract that can reduce muscle damage and soreness after exercise. This trial was registered at clinicaltrials.gov as NCT04742244.


Assuntos
Antioxidantes/administração & dosagem , Suplementos Nutricionais , Mialgia/dietoterapia , Extratos Vegetais/administração & dosagem , Verbenaceae/química , Administração Oral , Adulto , Antioxidantes/efeitos adversos , Método Duplo-Cego , Exercício Físico/efeitos adversos , Feminino , Humanos , Contração Isométrica/fisiologia , Masculino , Músculo Esquelético/fisiopatologia , Mialgia/diagnóstico , Mialgia/etiologia , Mialgia/fisiopatologia , Estresse Oxidativo , Placebos/administração & dosagem , Placebos/efeitos adversos , Extratos Vegetais/efeitos adversos , Adulto Jovem
3.
Int J Mol Sci ; 22(7)2021 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-33808079

RESUMO

Spirulina plantensis is a popular supplement which has been shown to have antioxidant and performance enhancing properties. The purpose of this study was to evaluate the effects of spirulina supplementation on (a) redox status (b) muscle performance and (c) muscle damage following an eccentric bout of exercise that would induce muscle damage. Twenty-four healthy, recreationally trained males participated in the study and were randomly separated into two groups: a spirulina supplementation (6 g per day) and a placebo group. Both groups performed an eccentric bout of exercise consisting of 5 sets and 15 maximum reps per set. Blood was collected at 24, 48, 72 and 96 h after the bout and total antioxidant capacity (TAC) and protein carbonyls (PC) were assessed in plasma. Delayed onset muscle soreness (DOMS) was also assessed at the same aforementioned time points. Eccentric peak torque (EPT) was evaluated immediately after exercise, as well as at 24, 48, 72 and 96 h post exercise. Redox status indices (TAC and PC) did not change significantly at any time point post exercise. DOMS increased significantly 24 h post exercise and remained elevated until 72 h and 96 h post exercise for the placebo and spirulina group, respectively. EPT decreased significantly and immediately post exercise and remained significantly lower compared to baseline until 72 h post exercise. No significant differences between groups were found for DOMS and EPT. These results indicate that spirulina supplementation following a muscle damaging protocol does not confer beneficial effects on redox status, muscle performance or damage.


Assuntos
Suplementos Nutricionais , Exercício Físico/fisiologia , Músculo Esquelético/fisiologia , Mialgia/dietoterapia , Spirulina , Adulto , Humanos , Masculino , Músculo Esquelético/efeitos dos fármacos , Oxirredução , Adulto Jovem
4.
J Clin Endocrinol Metab ; 106(7): 2057-2076, 2021 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-33710344

RESUMO

CONTEXT: The early events regulating the remodeling program following skeletal muscle damage are poorly understood. OBJECTIVE: The objective of this study was to determine the association between myofibrillar protein synthesis (myoPS) and nuclear factor-kappa B (NF-κB) signaling by nutritionally accelerating the recovery of muscle function following damage. DESIGN, SETTING, PARTICIPANTS, AND INTERVENTIONS: Healthy males and females consumed daily postexercise and prebed protein-polyphenol (PP; n = 9; 4 females) or isocaloric maltodextrin placebo (PLA; n = 9; 3 females) drinks (parallel design) 6 days before and 3 days after 300 unilateral eccentric contractions of the quadriceps during complete dietary control. MAIN OUTCOME MEASURES: Muscle function was assessed daily, and skeletal muscle biopsies were taken after 24, 27, and 36 hours for measurements of myoPS rates using deuterated water, and gene ontology and NF-κB signaling analysis using a quantitative reverse transcription PCR (RT-qPCR) gene array. RESULTS: Eccentric contractions impaired muscle function for 48 hours in PLA intervention, but just for 24 hours in PP intervention (P = 0.047). Eccentric quadricep contractions increased myoPS compared with the control leg during postexercise (24-27 hours; 0.14 ± 0.01 vs 0.11 ± 0.01%·h-1, respectively; P = 0.075) and overnight periods (27-36 hours; 0.10 ± 0.01 vs 0.07 ± 0.01%·h-1, respectively; P = 0.020), but was not further increased by PP drinks (P > 0.05). Protein-polyphenol drinks decreased postexercise and overnight muscle IL1R1 (PLA = 2.8 ± 0.4, PP = 1.1 ± 0.4 and PLA = 1.9 ± 0.4, PP = 0.3 ± 0.4 log2 fold-change, respectively) and IL1RL1 (PLA = 4.9 ± 0.7, PP = 1.6 ± 0.8 and PLA = 3.7 ± 0.6, PP = 0.7 ± 0.7 log2 fold-change, respectively) messenger RNA expression (P < 0.05) and downstream NF-κB signaling compared with PLA. CONCLUSION: Protein-polyphenol drink ingestion likely accelerates recovery of muscle function by attenuating inflammatory NF-κB transcriptional signaling, possibly to reduce aberrant tissue degradation rather than increase myoPS rates.


Assuntos
Bebidas , Mialgia/dietoterapia , Recuperação de Função Fisiológica/efeitos dos fármacos , Transdução de Sinais/efeitos dos fármacos , Fenômenos Fisiológicos da Nutrição Esportiva/efeitos dos fármacos , Proteínas Alimentares/administração & dosagem , Feminino , Voluntários Saudáveis , Humanos , Masculino , Contração Muscular/efeitos dos fármacos , Proteínas Musculares/efeitos dos fármacos , Músculo Esquelético/fisiopatologia , Mialgia/fisiopatologia , NF-kappa B/metabolismo , Polifenóis/administração & dosagem , Biossíntese de Proteínas/efeitos dos fármacos , Músculo Quadríceps/fisiopatologia , Treinamento Resistido/efeitos adversos , Adulto Jovem
5.
Eur J Appl Physiol ; 121(4): 969-992, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33420603

RESUMO

There have been a multitude of reviews written on exercise-induced muscle damage (EIMD) and recovery. EIMD is a complex area of study as there are a host of factors such as sex, age, nutrition, fitness level, genetics and familiarity with exercise task, which influence the magnitude of performance decrement and the time course of recovery following EIMD. In addition, many reviews on recovery from exercise have ranged from the impact of nutritional strategies and recovery modalities, to complex mechanistic examination of various immune and endocrine signaling molecules. No one review can adequately address this broad array of study. Thus, in this present review, we aim to examine EIMD emanating from both endurance exercise and resistance exercise training in recreational and competitive athletes and shed light on nutritional strategies that can enhance and accelerate recovery following EIMD. In addition, the evaluation of EIMD and recovery from exercise is often complicated and conclusions often depend of the specific mode of assessment. As such, the focus of this review is also directed at the available techniques used to assess EIMD.


Assuntos
Dieta/métodos , Treino Aeróbico/efeitos adversos , Mialgia/fisiopatologia , Treinamento Resistido/efeitos adversos , Dietoterapia/métodos , Humanos , Mialgia/dietoterapia , Mialgia/etiologia
6.
J Nutr Sci Vitaminol (Tokyo) ; 65(1): 82-89, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30814417

RESUMO

Curcumin is known to have potent anti-inflammatory effects. We have reported that acute curcumin ingestion attenuates eccentric exercise-induced muscle damage. This study aimed to examine the effect of curcumin ingestion timing (before or after exercise) on the changes in muscle damage markers after eccentric exercise. In this randomized, single-blind, parallel design study, 24 healthy young men performed 30 maximal isokinetic (120º/s) eccentric contractions of the elbow flexors using an isokinetic dynamometer. Subjects were randomly assigned to ingest 180 mg/d of oral curcumin either 7 d before (PRE) or 4 d after exercise (POST) or 180 mg/d of oral placebo 4 d after exercise (CON). The maximal voluntary contraction (MVC) torque of the elbow flexors, elbow joint range of motion (ROM), muscle soreness, and serum creatine kinase (CK) activity were measured before, immediately after, and 1-4 d after exercise. Changes in these variables were compared over time. In the POST group, ROM were higher at 3-4 d and muscle soreness was lower at 3 d after exercise compared with the CON group (p<0.05). However, in the PRE group, there were no significant differences compared with the CON group in changes in ROM and muscle soreness. Meanwhile, there were no significant differences among the groups in terms of changes in MVC torque and serum CK activity. Our results suggest that curcumin ingestion after exercise had a more beneficial effect in attenuating muscle soreness.


Assuntos
Curcumina/administração & dosagem , Ingestão de Alimentos/fisiologia , Exercícios de Alongamento Muscular/efeitos adversos , Mialgia/dietoterapia , Fatores de Tempo , Adulto , Anti-Inflamatórios não Esteroides/administração & dosagem , Creatina Quinase/sangue , Cotovelo/fisiopatologia , Articulação do Cotovelo/fisiopatologia , Exercício Físico/fisiologia , Voluntários Saudáveis , Humanos , Cinética , Masculino , Dinamômetro de Força Muscular , Mialgia/etiologia , Mialgia/fisiopatologia , Amplitude de Movimento Articular , Método Simples-Cego , Fenômenos Fisiológicos da Nutrição Esportiva , Torque , Adulto Jovem
7.
Biomed Pharmacother ; 103: 531-538, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29677539

RESUMO

Fibromyalgia (FM) is a complex chronic condition of unknown etiology, characterized by deep and widespread pain, sleep problems, cognitive impairment, fatigue, and other well-known functional symptoms. Recently, it has been proposed that an imbalance of nutritive components, including essential metal ions and vitamins, might play a critical role in the development of FM. Muscle pain has been associated with deficiencies in amino acids, magnesium, selenium, vitamins B and D, as well as with the harmful effects of heavy metals, such as mercury, cadmium, and lead. Research indicates that patients deficient in certain essential nutrients may develop dysfunction of pain inhibitory mechanisms together with fatigue and other FM symptoms. Additionally, mercury and other toxic elements may interfere with the bioavailability of essential nutrients. This review examines the many effects of metals and vitamins in pain evaluation of FM patients. Dietary guidance is therefore critical for FM patients to help them in correcting a suboptimal or deficient intake of essential nutrients. When optimal levels of nutrition are achieved, pain levels are usually lowered. Additional research is recommended in the field of FM and nutrition to disclose further possible relationships.


Assuntos
Suplementos Nutricionais , Fibromialgia/dietoterapia , Fibromialgia/metabolismo , Estado Nutricional/fisiologia , Vitaminas/administração & dosagem , Fadiga/dietoterapia , Fadiga/metabolismo , Humanos , Mialgia/dietoterapia , Mialgia/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologia , Medição da Dor/métodos
8.
Nutrients ; 10(3)2018 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-29534444

RESUMO

The effects of protein supplementation on the ratings of energy/fatigue, muscle soreness [ascending (A) and descending (D) stairs], and serum creatine kinase levels following a marathon run were examined. Variables were compared between recreational male and female runners ingesting carbohydrate + protein (CP) during the run (CPDuring, n = 8) versus those that were consuming carbohydrate (CHODuring,n = 8). In a second study, outcomes were compared between subjects who consumed CP or CHO immediately following exercise [CPPost (n = 4) versus CHOPost (n = 4)]. Magnitude-based inferences revealed no meaningful differences between treatments 24 h post-marathon. At 72 h, recovery [Δ(72 hr-Pre)] was likely improved with CPDuring versus CHODuring, respectively, for Physical Energy (+14 ± 64 vs -74 ± 70 mm), Mental Fatigue (-52 ± 59 vs +1 ± 11 mm), and Soreness-D (+15 ± 9 vs +21 ± 70 mm). In addition, recovery at 72 h was likely-very likely improved with CPPost versus CHOPost for Physical Fatigue, Mental Energy, and Soreness-A. Thus, protein supplementation did not meaningfully alter recovery during the initial 24 h following a marathon. However, ratings of energy/fatigue and muscle soreness were improved over 72 h when CP was consumed during exercise, or immediately following the marathon.


Assuntos
Proteínas Alimentares/uso terapêutico , Suplementos Nutricionais , Fadiga/prevenção & controle , Fadiga Mental/prevenção & controle , Mialgia/prevenção & controle , Corrida , Fenômenos Fisiológicos da Nutrição Esportiva , Adulto , Biomarcadores/sangue , Carboidratos da Dieta/uso terapêutico , Método Duplo-Cego , Bebidas Energéticas , Fadiga/sangue , Fadiga/dietoterapia , Fadiga/etiologia , Feminino , Géis , Humanos , Masculino , Fadiga Mental/sangue , Fadiga Mental/dietoterapia , Fadiga Mental/etiologia , Fadiga Muscular , Mialgia/sangue , Mialgia/dietoterapia , Mialgia/etiologia , Condicionamento Físico Humano , Resistência Física , Esforço Físico , Estudo de Prova de Conceito , Lanches , Fatores de Tempo , Adulto Jovem
9.
Nutrients ; 10(3)2018 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-29534031

RESUMO

Given its pivotal role in fatty acid oxidation and energy metabolism, l-carnitine has been investigated as ergogenic aid for enhancing exercise capacity in the healthy athletic population. Early research indicates its beneficial effects on acute physical performance, such as increased maximum oxygen consumption and higher power output. Later studies point to the positive impact of dietary supplementation with l-carnitine on the recovery process after exercise. It is demonstrated that l-carnitine alleviates muscle injury and reduces markers of cellular damage and free radical formation accompanied by attenuation of muscle soreness. The supplementation-based increase in serum and muscle l-carnitine contents is suggested to enhance blood flow and oxygen supply to the muscle tissue via improved endothelial function thereby reducing hypoxia-induced cellular and biochemical disruptions. Studies in older adults further showed that l-carnitine intake can lead to increased muscle mass accompanied by a decrease in body weight and reduced physical and mental fatigue. Based on current animal studies, a role of l-carnitine in the prevention of age-associated muscle protein degradation and regulation of mitochondrial homeostasis is suggested.


Assuntos
Carnitina/uso terapêutico , Suplementos Nutricionais , Medicina Baseada em Evidências , Exercício Físico , Mialgia/prevenção & controle , Substâncias para Melhoria do Desempenho/uso terapêutico , Fenômenos Fisiológicos da Nutrição Esportiva , Adulto , Idoso , Antioxidantes/uso terapêutico , Fenômenos Fisiológicos da Nutrição do Idoso , Humanos , Músculo Esquelético/irrigação sanguínea , Músculo Esquelético/crescimento & desenvolvimento , Músculo Esquelético/fisiologia , Músculo Esquelético/fisiopatologia , Mialgia/dietoterapia , Mialgia/fisiopatologia , Estresse Oxidativo , Sarcopenia/dietoterapia , Sarcopenia/prevenção & controle
10.
Biol Pharm Bull ; 41(4): 504-509, 2018 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-29415906

RESUMO

Neck and shoulder stiffness is a typical subjective symptom in developed countries. This stiffness is caused by factors such as muscle tension and poor blood flow, leading to reduce work efficiency and diminish QOL. NKCP®, a natto-derived dietary food supplement whose main component is bacillopeptidase F, has antithrombotic, fibrinolytic, and blood viscosity-lowering effects. Here, we investigated the effect of NKCP® on neck and shoulder stiffness in a double-blind placebo-controlled randomized crossover study. Thirty subjects with neck and shoulder stiffness were randomly divided into 2 groups and ingested 250 mg of NKCP® or placebo daily for 4 weeks. Headache score significantly improved in the NKCP® group compared to the placebo group. Moreover, NKCP® significantly improved the score of visual analogue scale for neck and shoulder stiffness and pain, reduced muscle stiffness of the neck, and increased the skin surface temperature of neck and shoulders, compared to before ingestion. No adverse effects were observed during this study. These results suggest that NKCP® may alleviate headaches and chronic neck and shoulder stiffness and pain.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Artralgia/dietoterapia , Bacillus subtilis , Alimentos Fermentados , Mialgia/dietoterapia , Alimentos de Soja , Simbióticos/administração & dosagem , Adulto , Anti-Inflamatórios não Esteroides/efeitos adversos , Artralgia/complicações , Artralgia/imunologia , Artralgia/fisiopatologia , Estudos Cross-Over , Países Desenvolvidos , Método Duplo-Cego , Feminino , Alimentos Fermentados/efeitos adversos , Cefaleia/complicações , Cefaleia/imunologia , Cefaleia/fisiopatologia , Cefaleia/prevenção & controle , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Mialgia/complicações , Mialgia/imunologia , Mialgia/fisiopatologia , Pescoço , Medição da Dor , Índice de Gravidade de Doença , Ombro , Temperatura Cutânea , Alimentos de Soja/efeitos adversos , Simbióticos/efeitos adversos
11.
Appl Physiol Nutr Metab ; 42(3): 263-270, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28165768

RESUMO

This study examined whether beetroot juice (BTJ) would attenuate inflammation and muscle damage following a marathon. Using a double blind, independent group design, 34 runners (each having completed ca. ∼16 previous marathons) consumed either BTJ or an isocaloric placebo (PLA) for 3 days following a marathon. Maximal isometric voluntary contractions (MIVC), countermovement jumps (CMJ), muscle soreness, serum cytokines, leucocytosis, creatine kinase (CK), high sensitivity C-reactive protein (hs-CRP), and aspartate aminotransferase (AST) were measured pre, post, and 2 days after the marathon. CMJ and MIVC were reduced after the marathon (P < 0.05), but no group differences were observed (P > 0.05). Muscle soreness was increased in the day after the marathon (BTJ; 45 ± 48 vs. PLA; 46 ± 39 mm) and had returned to baseline by day 2, irrespective of supplementation (P = 0.694). Cytokines (interleukin-6; IL-6, interleukin-8, tumour necrosis factor-α) were increased immediately post-marathon but apart from IL-6 had returned to baseline values by day 1 post. No interaction effects were evident for IL-6 (P = 0.213). Leucocytes increased 1.7-fold after the race and remained elevated 2 days post, irrespective of supplement (P < 0.0001). CK peaked at 1 day post marathon (BTJ: 965 ± 967, and PLA: 1141 ± 979 IU·L-1) and like AST and hs-CRP, was still elevated 2 days after the marathon (P < 0.05); however, no group differences were present for these variables. Beetroot juice did not attenuate inflammation or reduce muscle damage following a marathon, possibly because most of these indices were not markedly different from baseline values in the days after the marathon.


Assuntos
Beta vulgaris , Sucos de Frutas e Vegetais/análise , Inflamação/dietoterapia , Mialgia/dietoterapia , Corrida , Adulto , Proteína C-Reativa/metabolismo , Creatina Quinase/sangue , Citocinas/sangue , Carboidratos da Dieta/administração & dosagem , Gorduras na Dieta/administração & dosagem , Proteínas Alimentares/administração & dosagem , Método Duplo-Cego , Ingestão de Energia , Feminino , Humanos , Inflamação/sangue , Fígado/metabolismo , Masculino , Pessoa de Meia-Idade , Músculo Esquelético/metabolismo , Mialgia/sangue , Receptores de Quimiocinas/sangue
12.
J Int Soc Sports Nutr ; 13: 41, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27895542

RESUMO

BACKGROUND: Tart Montmorency cherries contain high concentrations of phytochemicals and anthocyanins, which have recently been linked to improved athletic recovery and subsequent performance. To date however, previous work reporting promising results has focused on land-based endurance sports, with any potential benefits to team sports remaining unknown. As such, this investigation set-out to examine the effect of supplemental tart cherry juice (CJ) on recovery and next day athletic performance in highly-trained water-based team sport athletes over seven days. METHODS: In a randomised, double-blind, repeated measures, crossover design, nine male Water Polo athletes were supplemented with CJ or a placebo equivalent (PLA) for six consecutive days. Prior to, and at the completion of the supplementation period, water-based performance testing was conducted. On day 6, participants also undertook a fatiguing simulated team game activity. Venous blood samples were collected (Pre-exercise: day 1, 6 and 7; Post-exercise: day 6) to investigate markers of inflammation [Interleukin-6 (IL-6); C-reactive protein (CRP)] and oxidative stress [Uric Acid (UA); F2-Isoprostane (F2-IsoP)]. A daily diary was also completed (total quality of recovery, delayed onset muscle soreness) as a measure of perceptual recovery. RESULTS: In both conditions, day 6 post-exercise IL-6 was significantly higher than pre-exercise and day 7 (p < 0.05); CRP was greater on day 7 as compared to day 6 pre- and post-exercise (p < 0.05); F2-IsoP was significantly lower on day 7 as compared to day 1 and day 6 (p < 0.05); UA remained unchanged (p > 0.05). No differences were found for any performance or recovery measures. CONCLUSIONS: The lack of difference observed in the blood markers between groups may reflect the intermittent, non-weight bearing demands of Water Polo, with such activity possibly unable to create a substantial inflammatory response or oxidative stress (over 7 days) to impede performance; thereby negating any potential beneficial effects associated with CJ supplementation. TRIAL REGISTRATION: This trial was registered with the Australian and New Zealand Clinical Trials Registry (ANZCTR). Registration number: ACTRN12616001080415. Date registered: 11/08/2016, retrospectively registered.


Assuntos
Desempenho Atlético/fisiologia , Suplementos Nutricionais , Sucos de Frutas e Vegetais , Extratos Vegetais/farmacologia , Prunus avium/química , Esportes , Adulto , Antocianinas/farmacologia , Antioxidantes/análise , Austrália , Biomarcadores/sangue , Comportamento Competitivo , Método Duplo-Cego , Flavonoides/farmacologia , Humanos , Inflamação/sangue , Interleucina-6/sangue , Masculino , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/fisiologia , Mialgia/dietoterapia , Mialgia/metabolismo , Nova Zelândia , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/administração & dosagem , Natação
13.
J Sports Med Phys Fitness ; 56(12): 1511-1517, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26853239

RESUMO

BACKGROUND: This study aimed to investigate the effects of branched-chain amino acid (BCAA) supplementation on recovery of power-producing ability following a strength training (ST) session. METHODS: Eleven resistance-trained males, performed baseline measures of a countermovement jump (CMJ) and a seated shot-put throw (SSPT). In a counterbalanced fashion, participants were provided with either 20-g of BCAA or a placebo. Each dose was divided into two equal quantities and consumed before and after a ST session consisting of various multi-joint barbell exercises. For both conditions, the CMJ and SSPT were repeated at 24-h post-ST, in addition participants attributed their perceived muscle soreness level via a 200-mm visual analogue scale. RESULTS: Following ST there were significant decrements in CMJ (baseline; 55.2±7.4-cm, BCAA; 52.8±5.9-cm placebo; 50.6±7.3-cm) and SSPT (baseline; 4.55±0.56-m, BCAA; 4.37±0.61-m, placebo; 4.22±0.64-m) for both conditions in comparison to baseline values (P<0.05). However, BCAA was shown to attenuate the decrements in CMJ and SSPT performance compared to placebo (P<0.05). Muscle soreness was significantly increased following ST for both conditions, however there were no differences in attributed values following BCAA and placebo ingestion. CONCLUSIONS: BCAA administered acutely before and following intensive ST attenuates a decrease in power-producing ability experienced by resistance-trained males. The apparent small but significant effects on functional power suggest that BCAA is an effective ergogenic aid for athletes who require augmented recovery of power-producing ability following intensive ST.


Assuntos
Aminoácidos de Cadeia Ramificada/uso terapêutico , Suplementos Nutricionais , Fadiga Muscular/efeitos dos fármacos , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/fisiologia , Mialgia/dietoterapia , Treinamento Resistido , Adaptação Fisiológica/efeitos dos fármacos , Atletas , Desempenho Atlético/fisiologia , Tolerância ao Exercício/efeitos dos fármacos , Tolerância ao Exercício/fisiologia , Humanos , Inflamação/dietoterapia , Masculino , Medição da Dor , Exercício Pliométrico , Adulto Jovem
14.
Eur J Appl Physiol ; 115(6): 1245-61, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25673557

RESUMO

PURPOSE: The consumption of 500 ml milk following muscle damaging exercise can attenuate decreases in muscle functional capacity and increases in markers of muscle damage and soreness in males. There has been no similar research in female participants. Therefore, the aim of this study was to investigate the effects of milk consumption on exercise-induced muscle damage (EIMD) in males and females. METHODS: Thirty-two team sport players (male n = 16; female n = 16) were randomly, but equally divided into four groups: male milk, male carbohydrate, female milk, and female carbohydrate. Immediately following muscle damaging exercise, participants consumed either 500 ml of milk or 500 ml of an energy-matched carbohydrate solution. Skeletal troponin I (sTnI), creatine kinase (CK), peak torque, counter movement jump height, 20 m sprint performance and passive and active soreness were recorded prior to and 24, 48 and 72 h post-EIMD. RESULTS: For females, milk had a likely/very likely beneficial effect on attenuating losses in peak torque at 60°/s from baseline to 24, 48 and 72 h, and a likely beneficial effect in minimising decrements in sprint performance and soreness over 72 h. Milk was unlikely to have a negative effect on serum markers of damage from baseline to 48 and 72 h. For males, milk had an unclear effect on muscle function variables. Milk had a most likely/likely beneficial effect on limiting muscle soreness from baseline to 72 h, and a possible beneficial effect on attenuating increases in CK. The effect on sTnI was unlikely to be negative from baseline-72 h. Overall gender comparisons provided many unclear outcomes. However, female participants demonstrated smaller increases in sprint time, passive soreness, active soreness (non-dominant leg) and sTnI values. CONCLUSION: Consumption of 500 ml of milk post-EIMD can limit decrements in muscle function in females, and limit increases in soreness and serum markers of muscle damage in females and males.


Assuntos
Exercício Físico , Leite , Mialgia/dietoterapia , Adulto , Animais , Creatina Quinase/sangue , Feminino , Humanos , Masculino , Músculo Esquelético/metabolismo , Músculo Esquelético/fisiologia , Mialgia/etiologia , Mialgia/prevenção & controle , Fatores Sexuais , Troponina I/sangue
15.
Rheumatol Int ; 34(7): 1011-3, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23765203

RESUMO

Our aim was to assess the effect of dietary elimination of monosodium glutamate (MSG) and aspartame on perceived pain in fibromyalgia. A total of 72 female patients with fibromyalgia were randomized to discontinuation of dietary MSG and aspartame (n = 36) or waiting list (n = 36). Patients were requested to rate their pain using a seven-point scale. Comparisons between both groups showed no significant differences on pain referred during the baseline or after the elimination of dietary MSG and aspartame. The discontinuation of dietary MSG and aspartame did not improve the symptoms of fibromyalgia.


Assuntos
Aspartame/administração & dosagem , Fibromialgia/dietoterapia , Mialgia/dietoterapia , Glutamato de Sódio/administração & dosagem , Adulto , Idoso , Dieta , Feminino , Humanos , Prontuários Médicos , Pessoa de Meia-Idade , Mialgia/diagnóstico , Medição da Dor , Falha de Tratamento , Adulto Jovem
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