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Faria VS, Egan B. Effects of 3 days of citrulline malate supplementation on short-duration repeated sprint running performance in male team sport athletes. Eur J Sport Sci 2024; 24:758-765. [PMID: 38874989 PMCID: PMC11235799 DOI: 10.1002/ejsc.12090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 06/15/2024]
Abstract
Citrulline malate (CM) is purported to be an ergogenic aid during various types of exercise performance. However, the effects of CM on repeated sprint performance (RSP) are under-explored. In a placebo-controlled, double-blind, counterbalanced cross-over design, male university-level team sport athletes (n = 13) performed two familiarization trials, after which CM or placebo (PLA) (8 × 1 g tablets each day) were taken on the 2 days prior to, and with breakfast on the morning of, each main experimental trial. The main experimental trials employed a RSP protocol consisting of 10 repetitions of 40 m maximal shuttle run test (MST) with a 30 s interval between the start of each sprint. Sprint times and heart rate were recorded throughout the MST, and blood lactate concentrations were measured before, immediately after, and 5 min after completing the MST. CM resulted in better RSP compared to PLA, as indicated by a lower sprint performance decrement (Sdec: CM, 4.68% ± 1.82% vs. PLA, 6.10% ± 1.83%; p = 0.03; ES = 0.77), which was possibly influenced by the fastest sprint time being faster in CM (CM, 8.16 ± 0.34 s vs. PLA, 8.29 ± 0.39 s; p = 0.011; ES = 0.34). There were no differences between CM and PLA in average sprint time (p = 0.54), slowest sprint time (p = 0.48), blood lactate concentrations (p = 0.73) or heart rate (p = 0.18), nor was there a condition × time interaction effect across the 10 sprints (p = 0.166). Three days of CM supplementation (8 g daily) attenuated the sprint performance decrement during short-duration high-intensity exercise in the form of running RSP in male university-level team sport athletes.
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Affiliation(s)
- Vinicius S. Faria
- School of Health and Human PerformanceDublin City UniversityDublinIreland
| | - Brendan Egan
- School of Health and Human PerformanceDublin City UniversityDublinIreland
- Florida Institute of Human and Machine CognitionPensacolaFloridaUSA
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Martín-Rodríguez A, Belinchón-deMiguel P, Rubio-Zarapuz A, Tornero-Aguilera JF, Martínez-Guardado I, Villanueva-Tobaldo CV, Clemente-Suárez VJ. Advances in Understanding the Interplay between Dietary Practices, Body Composition, and Sports Performance in Athletes. Nutrients 2024; 16:571. [PMID: 38398895 PMCID: PMC10892519 DOI: 10.3390/nu16040571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
The dietary practices of athletes play a crucial role in shaping their body composition, influencing sports performance, training adaptations, and overall health. However, despite the widely acknowledged significance of dietary intake in athletic success, there exists a gap in our understanding of the intricate relationships between nutrition, body composition, and performance. Furthermore, emerging evidence suggests that many athletes fail to adopt optimal nutritional practices, which can impede their potential achievements. In response, this Special Issue seeks to gather research papers that delve into athletes' dietary practices and their potential impacts on body composition and sports performance. Additionally, studies focusing on interventions aimed at optimizing dietary habits are encouraged. This paper outlines the key aspects and points that will be developed in the ensuing articles of this Special Issue.
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Affiliation(s)
- Alexandra Martín-Rodríguez
- Faculty of Sports Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain; (A.M.-R.); (A.R.-Z.); (V.J.C.-S.)
| | - Pedro Belinchón-deMiguel
- Faculty of Biomedical and Health Sciences, Department of Nursing and Nutrition, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain;
| | - Alejandro Rubio-Zarapuz
- Faculty of Sports Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain; (A.M.-R.); (A.R.-Z.); (V.J.C.-S.)
| | - Jose Francisco Tornero-Aguilera
- Faculty of Sports Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain; (A.M.-R.); (A.R.-Z.); (V.J.C.-S.)
| | - Ismael Martínez-Guardado
- Faculty of Health Sciences, Camilo José Cela University, C. Castillo de Alarcón, 49, Villafranca del Castillo, 28692 Madrid, Spain;
| | | | - Vicente Javier Clemente-Suárez
- Faculty of Sports Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain; (A.M.-R.); (A.R.-Z.); (V.J.C.-S.)
- Grupo de Investigación en Cultura, Educación y Sociedad, Universidad de la Costa, Barranquilla 080002, Colombia
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Harrington RN. Effects of branched chain amino acids, l-citrulline, and alpha-glycerylphosphorylcholine supplementation on exercise performance in trained cyclists: a randomized crossover trial. J Int Soc Sports Nutr 2023; 20:2214112. [PMID: 37229544 DOI: 10.1080/15502783.2023.2214112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Nutrition plays a key role in training and athletic performance and dietary supplements can make a small, but potentially valuable, contribution to achieving peak athletic performance. This study is the first to investigate the effects of supplementation from the combination of BCAAs, L-citrulline, and A-GPC on exercise performance. METHODS In this randomized, double-blind, crossover study 30 male trained cyclists (age: 43.7 ± 8.5 years) completed a 20 km cycling time trial (TT) test and a high intensity endurance cycling (HIEC) test following a 7-day supplementation period with either a supplement containing 8 g BCAAs, 6 g L-citrulline, and 300 mg A-GPC or a placebo (15 g maltodextrin). For each trial, mean values for time to completion, peak and average power output, OMNI rating of perceived exertion, and visual analogue scale (VAS) responses on perceived exertion were computed for the 20 km TT test. Mean values for time to fatigue and VAS responses on perceived exertion were computed for the HIEC test. Procedures for dietary intake and exercise patterns were implemented to achieve consistency throughout the study period. RESULTS There was a significant increase (p = .003) in peak power in the 20 km TT (354.27 ± 87.88 and 321.67 ± 63.65, for supplement and placebo trials, respectively) and a significant increase (p = .001) in time to fatigue in the HIEC test (0:19:49 ± 0:11:13 min and 0:14:33 ± 0:09:59 min, for supplement and placebo trials, respectively) with the test supplement compared to the placebo. With the test supplement, there was an average increase in TT peak power of 11% and an average increase in time to fatigue of 36.2% in the HIEC test compared to the placebo. There was no significant improvement in time to completion, average power, OMNI rating of perceived exertion, or VAS responses on perceived exertion in the TT test and no significant improvement in VAS measures of perceived exertion in the HIEC test. CONCLUSIONS The combination of BCAAs, L-citrulline, and A-GPC used in this study improves cycling performance and may be useful for individuals seeking to improve athletic performance, particularly in disciplines requiring lower body muscular strength and endurance.
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Affiliation(s)
- Renee Nicole Harrington
- Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
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Harnden CS, Agu J, Gascoyne T. Effects of citrulline on endurance performance in young healthy adults: a systematic review and meta-analysis. J Int Soc Sports Nutr 2023; 20:2209056. [PMID: 37155582 PMCID: PMC10167868 DOI: 10.1080/15502783.2023.2209056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Citrulline is a popular dietary supplement, primarily thought to exert ergogenic effects on exercise performance through the enhancement of nitric oxide (NO) synthesis and ammonia buffering. However, recent findings surrounding citrulline's effect on endurance performance have been inconsistent. A systematic review and meta-analysis of the relevant literature have yet to be undertaken. AIM To determine if acute ingestion of citrulline has an ergogenic effect on endurance performance in young healthy adults. METHODS A systematic search of three databases was undertaken to find peer-reviewed randomized controlled trials (RCTs) published in English investigating the effects of citrulline supplementation on endurance performance in young healthy adults. Two independent investigators completed a three-phased screening procedure against pre-determined eligibility criteria. Included studies evaluated loading or bolus dosage regimes of citrulline in participants aged 18 or over that were at least recreationally active. Outcome measures focused on time-to-completion (TTC) or time-to-exhaustion (TTE) in continuous submaximal intensity exercise. Cochrane's Risk of Bias 2 (RoB 2) tool was used to assess the risk of bias in individual studies. Meta-analysis was conducted using a fixed-effects model to pool the weighted estimate of standardized mean differences (SMD) across studies. A chi-squared test assessed heterogeneity between studies. This review was conducted and reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. RESULTS Nine studies (n = 158 participants) met the eligibility criteria; five reported TTE outcomes (I2 = 0%, χ2 = 0.37, df = 4, P = 0.99) and four reported TTC outcomes (I2 = 0%, χ2 = 0.46, df = 3, P = 0.93), both with a low between-study heterogeneity. The results of the meta-analyses showed no significant difference in the endurance performance measures, TTE (pooled SMD = 0.03 [-0.27, 0.33]) and TTC (pooled SMD = -0.07 [-0.50, 0.15]), after acute ingestion of citrulline supplementation or a control in young healthy adults. DISCUSSION The current evidence suggests no significant benefit of citrulline supplementation for endurance performance. However, the small evidence base requires further research to fully evaluate this topic. Recommendations include a focus on female populations; higher continuous doses of citrulline over seven days; and TTC outcome measures over longer distances to simulate competition.
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Affiliation(s)
- Callum S Harnden
- University of Nottingham, Department of Sports and Exercise Medicine, Faculty of Medicine and Health Sciences, Nottingham, UK
| | - Joseph Agu
- University of Nottingham, Department of Sports and Exercise Medicine, Faculty of Medicine and Health Sciences, Nottingham, UK
| | - Tom Gascoyne
- University of Nottingham, Department of Sports and Exercise Medicine, Faculty of Medicine and Health Sciences, Nottingham, UK
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Gonzalez AM, Yang Y, Mangine GT, Pinzone AG, Ghigiarelli JJ, Sell KM. Acute Effect of L-Citrulline Supplementation on Resistance Exercise Performance and Muscle Oxygenation in Recreationally Resistance Trained Men and Women. J Funct Morphol Kinesiol 2023; 8:88. [PMID: 37489301 PMCID: PMC10366749 DOI: 10.3390/jfmk8030088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/01/2023] [Accepted: 06/19/2023] [Indexed: 07/26/2023] Open
Abstract
L-citrulline serves as a nitric oxide precursor with the potential to increase blood flow and improve resistance exercise performance, yet more research is needed to examine its ergogenic potential. To examine the effect of L-citrulline supplementation on resistance exercise performance, muscle oxygenation, and the subjective perception of effort, energy, focus, fatigue, and muscle pump, eighteen resistance-trained men (n = 11) and women (n = 7) (21.4 ± 1.8 years; 172.3 ± 7.5 cm; 76.9 ± 10.8 kg) were randomly assigned for supplementation with 8 g of L-citrulline (CIT) or a placebo (PL) in a cross-over fashion one hour prior to testing. Participants completed an isometric mid-thigh pull test (IMTP), a ballistic bench press protocol [two sets of two repetitions at 75% 1-repetition maximum (1 RM) with maximum ballistic intent], and a strength-endurance bench press protocol [five repetition-maximum sets at 75% 1RM]. Barbell velocity and power were measured via a linear position transducer during the ballistic protocol, while the repetitions completed, volume load and muscle oxygenation were quantified during the strength-endurance protocol. Subjective measures were assessed at the baseline and immediately pre- and post-exercise. Repeated measures of the analysis of variance and Bayesian equivalents revealed no significant interactions, providing evidence favoring the null hypothesis (BF10 < 1) for IMTP (PL 497.5 ± 133.6 vs. CIT 492.5 ± 129.4 N), barbell velocity, and power, and repetitions completed (PL 36.7 ± 7.2 vs. CIT 36.9 ± 8.1 repetitions). There were also no significant interactions for muscle oxygenation parameters or subjective measures except perceived fatigue. Women reported greater fatigue across all time points compared to men (~1.88 au, p = 0.045, BF10 = 0.2). The results indicate that a single 8 g dose of L-citrulline did not enhance isometric force production, muscle endurance, or muscle oxygenation parameters during the protocol implemented in this study.
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Affiliation(s)
- Adam M Gonzalez
- Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA
| | - Yang Yang
- Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA
| | - Gerald T Mangine
- Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA 30144, USA
| | - Anthony G Pinzone
- Program in Exercise Science and Exercise Physiology, Kent State University, Kent, OH 44242, USA
| | - Jamie J Ghigiarelli
- Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA
| | - Katie M Sell
- Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA
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Park HY, Kim SW, Seo J, Jung YP, Kim H, Kim AJ, Kim S, Lim K. Dietary Arginine and Citrulline Supplements for Cardiovascular Health and Athletic Performance: A Narrative Review. Nutrients 2023; 15:1268. [PMID: 36904267 PMCID: PMC10005484 DOI: 10.3390/nu15051268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
The global market for nutritional supplements (NS) is growing rapidly, and the use of L-arginine (Arg), L-citrulline (Cit), and citrulline malate (CitMal) supplements has been shown to enhance cardiovascular health and athletic performance. Over the past decade, Arg, Cit, and CitMal supplements have received considerable attention from researchers in the field of exercise nutrition, who have investigated their potential effects on hemodynamic function, endothelial function, aerobic and anaerobic capacity, strength, power, and endurance. Previous studies were reviewed to determine the potential impact of Arg, Cit, and CitMal supplements on cardiovascular health and exercise performance. By synthesizing the existing literature, the study aimed to provide insight into the possible uses and limitations of these supplements for these purposes. The results showed that both recreational and trained athletes did not see improved physical performance or increased nitric oxide (NO) synthesis with 0.075 g or 6 g doses of Arg supplement per body weight. However, 2.4 to 6 g of Cit per day for 7 to 16 days of various NSs had a positive impact, increasing NO synthesis, enhancing athletic performance indicators, and reducing feelings of exertion. The effects of an 8 g acute dose of CitMal supplement were inconsistent, and more research is needed to determine its impact on muscle endurance performance. Based on the positive effects reported in previous studies, further testing is warranted in various populations that may benefit from nutritional supplements, including aerobic and anaerobic athletes, resistance-trained individuals, elderly people, and clinical populations, to determine the impact of different doses, timing of ingestion, and long-term and acute effects of Arg, Cit, and CitMal supplements on cardiovascular health and athletic performance.
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Affiliation(s)
- Hun-Young Park
- Physical Activity and Performance Institute, Konkuk University, Seoul 05029, Republic of Korea
- Department of Sports Medicine and Science, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
| | - Sung-Woo Kim
- Physical Activity and Performance Institute, Konkuk University, Seoul 05029, Republic of Korea
- Department of Sports Medicine and Science, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
| | - Jisoo Seo
- Department of Sports Medicine and Science, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
| | - Yanghoon P. Jung
- CJ CheilJedang Food & Nutrition Tech, Jung-gu, Seoul 04527, Republic of Korea
| | - Hyunji Kim
- CJ CheilJedang Food & Nutrition Tech, Jung-gu, Seoul 04527, Republic of Korea
| | - Ah-Jin Kim
- CJ CheilJedang Food & Nutrition Tech, Jung-gu, Seoul 04527, Republic of Korea
| | - Sonwoo Kim
- CJ CheilJedang Food & Nutrition Tech, Jung-gu, Seoul 04527, Republic of Korea
| | - Kiwon Lim
- Physical Activity and Performance Institute, Konkuk University, Seoul 05029, Republic of Korea
- Department of Sports Medicine and Science, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
- Department of Physical Education, Konkuk University, Seoul 05029, Republic of Korea
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Supplementation with Nitric Oxide Precursors for Strength Performance: A Review of the Current Literature. Nutrients 2023; 15:nu15030660. [PMID: 36771366 PMCID: PMC9921013 DOI: 10.3390/nu15030660] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 02/03/2023] Open
Abstract
Nitric-oxide-stimulating dietary supplements are widely available and marketed to strength athletes and weightlifters seeking to increase muscle performance and augment training adaptations. These supplements contain ingredients classified as nitric oxide (NO) precursors (i.e., "NO boosters"). Endogenous NO is generated via a nitric oxide synthase (NOS)-dependent pathway and a NOS-independent pathway that rely on precursors including L-arginine and nitrates, with L-citrulline serving as an effective precursor of L-arginine. Nitric oxide plays a critical role in endothelial function, promoting relaxation of vascular smooth muscle and subsequent dilation which may favorably impact blood flow and augment mechanisms contributing to skeletal muscle performance, hypertrophy, and strength adaptations. The aim of this review is to describe the NO production pathways and summarize the current literature on the effects of supplementation with NO precursors for strength and power performance. The information will allow for an informed decision when considering the use of L-arginine, L-citrulline, and nitrates to improve muscular function by increasing NO bioavailability.
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The Effect of a Single Dose of Citrulline on the Physical Performance of Soccer-Specific Exercise in Adult Elite Soccer Players (A Pilot Randomized Double-Blind Trial). Nutrients 2022; 14:nu14235036. [PMID: 36501066 PMCID: PMC9739774 DOI: 10.3390/nu14235036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/19/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the effect of a single intake of citrulline at 3 g and 6 g doses in adult elite soccer players performing sport-specific exercise. MATERIALS AND METHODS This randomized double-blind placebo-controlled study analyzed 18 soccer players from the top divisions of three European countries. Participants were randomized into three groups of six each and performed a field-based soccer-specific test for 18 min. Comparative analysis of heart rate, fatigue and post-exercise recovery was conducted. RESULTS There were no statistically significant differences in most of the analyzed parameters, nor at any of the time points for lactate concentration. Players' RPE exercise test score did not reveal any differences. CONCLUSIONS Neither a single intake of 3 g nor of 6 g of citrulline malate affected physical performance, subjective feelings of fatigue or post-exercise recovery in adult elite soccer players who performed a soccer-specific test.
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Meimoun L, Pecchi É, Vilmen C, Bendahan D, Giannesini B. Effect of citrulline malate supplementation on muscle function and bioenergetics during short-term repeated bouts of fatiguing exercise. J Sports Sci 2022; 40:1981-1990. [PMID: 36251983 DOI: 10.1080/02640414.2022.2123527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2022] [Indexed: 10/24/2022]
Abstract
Citrulline malate (CM) has been shown to improve muscle performance in healthy participants during a single exercise session. Yet, within the framework of exercises repeated at close time interval, the consequences of CM ingestion on mechanical performance are controversial and the bioenergetics side remains undocumented. The aim of this double-blind placebo-controlled study was to evaluate in vivo the effect of short-term (7 doses in 48 h) oral administration of CM upon gastrocnemius muscle function and bioenergetics using non-invasive multimodal NMR techniques in healthy rats. The experimental protocol consisted of two 6-min bouts of fatiguing exercise spaced by an 8-min recovery period. CM treatment did not affect the basal bioenergetics status and increased the half-fatigue time during the first exercise bout. With exercise repetition, it prevented PCr cost alteration and decreased both the glycolytic ATP production and the contractile ATP cost in working muscle, but these changes were not associated to any improvement in mechanical performance. In addition, CM did not influence the replenishment of high-energy phosphorylated compounds during the post-exercise recovery periods. Therefore, short-term CM administration enhances muscle bioenergetics throughout fatiguing bouts of exercise repeated at close time interval but this enhancement does not benefit to mechanical performance.
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The Effects of Consuming Amino Acids L-Arginine, L-Citrulline (and Their Combination) as a Beverage or Powder, on Athletic and Physical Performance: A Systematic Review. BEVERAGES 2022. [DOI: 10.3390/beverages8030048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Consumption of amino acids L-arginine (L-Arg) and L-citrulline (L-Cit) are purported to increase nitric oxide (NO) production and improve physical performance. Clinical trials have shown relatively more favorable outcomes than not after supplementing with L-Cit and combined L-Arg and L-Cit. However, in most studies, other active ingredients such as malate were included in the supplement. Therefore, the aim of this study was to determine the efficacy of consuming standalone L-Arg, L-Cit, and their combination (in the form of powder or beverage) on blood NO level and physical performance markers. A systematic review was undertaken following PRISMA 2020 guidelines (PROSPERO: CRD42021287530). Four electronic databases (PubMed, Ebscohost, Science Direct, and Google scholar) were used. An acute dose of 0.075 g/kg of L-Arg or 6 g L-Arg had no significant increase in NO biomarkers and physical performance markers (p > 0.05). Consumption of 2.4 to 6 g/day of L-Cit over 7 to 16 days significantly increased NO level and physical performance markers (p < 0.05). Combined L-Arg and L-Cit supplementation significantly increased circulating NO, improved performance, and reduced feelings of exertion (p < 0.05). Standalone L-Cit and combined L-Arg with L-Cit consumed over several days effectively increases circulating NO and improves physical performance and feelings of exertion in recreationally active and well-trained athletes.
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López-Martínez MI, Miguel M, Garcés-Rimón M. Protein and Sport: Alternative Sources and Strategies for Bioactive and Sustainable Sports Nutrition. Front Nutr 2022; 9:926043. [PMID: 35782926 PMCID: PMC9247391 DOI: 10.3389/fnut.2022.926043] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/17/2022] [Indexed: 11/13/2022] Open
Abstract
Nutrition and sport play an important role in achieving a healthy lifestyle. In addition to the intake of nutrients derived from the normal diet, some sport disciplines require the consumption of supplements that contribute positively to improved athletic performance. Protein intake is important for many aspects related to health, and current evidence suggests that some athletes require increased amounts of this nutrient. On the other hand, society's demand for more environmentally friendly products, focus on the search for alternative food sources more sustainable. This review aims to summarize the latest research on novel strategies and sources for greener and functional supplementation in sport nutrition. Alternative protein sources such as insects, plants or mycoproteins have proven to be an interesting substrate due to their high added value in terms of bioactivity and sustainability. Protein hydrolysis has proven to be a very useful technology to revalue by-products, such as collagen, by producing bioactive peptides beneficial on athletes performance and sport-related complications. In addition, it has been observed that certain amino acids from plant sources, as citrulline or theanine, can have an ergogenic effect for this target population. Finally, the future perspectives of protein supplementation in sports nutrition are discussed. In summary, protein supplementation in sports nutrition is a very promising field of research, whose future perspective lies with the search for alternatives with greater bioactive potential and more sustainable than conventional sources.
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Affiliation(s)
- Manuel I. López-Martínez
- Departamento de Bioactividad y Análisis de Alimenos, Instituto de Investigación en Ciencias de la Alimentación (CIAL, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid), Madrid, Spain
| | - Marta Miguel
- Departamento de Bioactividad y Análisis de Alimenos, Instituto de Investigación en Ciencias de la Alimentación (CIAL, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid), Madrid, Spain
- *Correspondence: Marta Miguel
| | - Marta Garcés-Rimón
- Grupo de Investigación en Biotecnología Alimentaria, Universidad Francisco de Vitoria, Madrid, Spain
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Gonzalez AM, Pinzone AG, Lipes SE, Mangine GT, Townsend JR, Allerton TD, Sell KM, Ghigiarelli JJ. Effect of watermelon supplementation on exercise performance, muscle oxygenation, and vessel diameter in resistance-trained men. Eur J Appl Physiol 2022; 122:1627-1638. [DOI: 10.1007/s00421-022-04940-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/23/2022] [Indexed: 11/25/2022]
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Stratton MT, Siedler MR, Harty PS, Rodriguez C, Boykin JR, Green JJ, Keith DS, White SJ, DeHaven B, Williams AD, Tinsley GM. The influence of caffeinated and non-caffeinated multi-ingredient pre-workout supplements on resistance exercise performance and subjective outcomes. J Int Soc Sports Nutr 2022; 19:126-149. [PMID: 35599920 PMCID: PMC9116396 DOI: 10.1080/15502783.2022.2060048] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background There is substantial consumer and practitioner interest in an emerging supplement class known as multi-ingredient pre-workout supplements (MIPS), largely due to their prevalence in resistance training communities as well as research findings demonstrating the ergogenic impact of caffeine on muscular performance. However, limited research has examined the potential efficacy of non-caffeinated MIPS, despite their growing popularity among those who are caffeine-sensitive or who train later in the day. Methods Twenty-four resistance-trained college-aged males (n = 12) and females (n = 12) completed three visits in which they ingested either a caffeinated MIPS (C), an otherwise identical non-caffeinated MIPS (NC), or placebo in a double-blind, counterbalanced, crossover fashion. Squat isometric peak force (PFiso), rate of force development (RFD), and isokinetic performance were assessed. Upper and lower body maximal muscular strength and endurance were evaluated using the bench press and leg press, respectively. Visual analog scales for energy, focus, and fatigue were completed five times throughout the testing protocol. The effects of supplementation and biological sex on all variables were examined using linear mixed effects models. Results Significantly greater PFiso was observed in both C (b: 0.36 transformed units [0.09, 0.62]) and NC (b: 0.32 transformed units [95% CI: 0.05, 0.58]) conditions, relative to placebo. Early RFD (RFD50) may have been higher with supplementation, particularly in females, with no effects for late RFD (RFD200) or peak RFD. In addition, increases in subjective energy after supplement ingestion were noted for C, but not NC. No effects of supplementation on traditional resistance exercise performance or isokinetic squat performance were observed, other than a lower leg press one-repetition maximum for males in the NC condition. Conclusions These data indicate that acute ingestion of either a caffeinated or non-caffeinated pre-workout formulation improved maximal force production during an isometric squat test but did not provide additional benefit to leg press, bench press, or isokinetic squat performance over placebo, within the context of a laboratory environment. The consumption of a caffeinated, but not non-caffeinated, MIPS increased subjective ratings of energy over placebo when assessed as part of a testing battery.
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Affiliation(s)
- Matthew T. Stratton
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Madelin R. Siedler
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Patrick S. Harty
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Christian Rodriguez
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Jake R. Boykin
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Jacob J. Green
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Dale S. Keith
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Sarah J. White
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Brielle DeHaven
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Abegale D. Williams
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Grant M. Tinsley
- Energy Balance & Body Composition Laboratory; Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
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Burgos J, Viribay A, Calleja-González J, Fernández-Lázaro D, Olasagasti-Ibargoien J, Seco-Calvo J, Mielgo-Ayuso J. Long-Term Combined Effects of Citrulline and Nitrate-Rich Beetroot Extract Supplementation on Recovery Status in Trained Male Triathletes: A Randomized, Double-Blind, Placebo-Controlled Trial. BIOLOGY 2022; 11:75. [PMID: 35053073 PMCID: PMC8772988 DOI: 10.3390/biology11010075] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/18/2021] [Accepted: 12/31/2021] [Indexed: 12/16/2022]
Abstract
Citrulline (CIT) and nitrate-rich beetroot extract (BR) are widely studied ergogenic aids. Nevertheless, both supplements have been studied in short-term trials and separately. To the best of the authors' knowledge, the effects of combining CIT and BR supplementation on recovery status observed by distance covered in the Cooper test, exercise-induced muscle damage (EIMD) and anabolic/catabolic hormone status have not been investigated to date. Therefore, the main purpose of this research was to assess the effect of the long-term (9 weeks) mixture of 3 g/day of CIT plus 2.1 g/day of BR (300 mg/day of nitrates (NO3-)) supplementation on recovery by distance covered in the Cooper test, EIMD markers (urea, creatinine, AST, ALT, GGT, LDH and CK) and anabolic/catabolic hormones (testosterone, cortisol and testosterone/cortisol ratio (T/C)) in male trained triathletes. Thirty-two triathletes were randomized into four different groups of eight triathletes in this double-blind, placebo-controlled trial: placebo group (PLG), CIT group (CITG; 3 g/day of CIT), BR group (BRG; 2.1 g/day of BR (300 mg/day of NO3-)) and CIT-BR group (CIT-BRG; 3 g/day of CIT plus 2.1 g/day of BR (300 mg/day of NO3-)). Distance covered in the Cooper test and blood samples were collected from all participants at baseline (T1) and after 9 weeks of supplementation (T2). There were no significant differences in the interaction between group and time in EIMD markers (urea, creatinine, AST, ALT, GGT, LDH and CK) (p > 0.05). However, significant differences were observed in the group-by-time interaction in distance covered in the Cooper test (p = 0.002; η2p = 0.418), cortisol (p = 0.044; η2p = 0.247) and T/C (p = 0.005; η2p = 0.359). Concretely, significant differences were observed in distance covered in the Cooper test percentage of change (p = 0.002; η2p = 0.418) between CIT-BRG and PLG and CITG, in cortisol percentage change (p = 0.049; η2p = 0.257) and in T/C percentage change (p = 0.018; η2p = 0.297) between CIT-BRG and PLG. In conclusion, the combination of 3 g/day of CIT plus 2.1 g/day of BR (300 mg/day of NO3-) supplementation for 9 weeks did not present any benefit for EIMD. However, CIT + BR improved recovery status by preventing an increase in cortisol and showing an increase in distance covered in the Cooper test and T/C.
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Affiliation(s)
- José Burgos
- Department of Nursing and Physiotherapy, University of León, 24071 León, Spain;
- Burgos Nutrition, Physiology, Nutrition and Sport, 26007 Logroño, Spain
| | - Aitor Viribay
- Glut4Science, Physiology, Nutrition and Sport, 01004 Vitoria-Gasteiz, Spain;
| | - Julio Calleja-González
- Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country, 01007 Vitoria-Gasteiz, Spain;
| | - Diego Fernández-Lázaro
- Department of Cellular Biology, Histology and Pharmacology, Faculty of Health Sciences, University of Valladolid, 42003 Soria, Spain;
- Neurobiology Research Group, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
| | - Jurgi Olasagasti-Ibargoien
- Faculty of Education and Sports, University of Deusto, 20012 Donostia-San Sebastian, Spain;
- Health, Physical Activity and Sports Science Laboratory (HealthPASS), Departament of Physical Activity and Sport, Faculty of Education and Sport, University of Deusto, 48007 Bilbao, Spain
| | - Jesús Seco-Calvo
- Physiotherapy Department, Institute of Biomedicine (IBIOMED), University of Leon, Campus de Vegazana, 24071 Leon, Spain;
| | - Juan Mielgo-Ayuso
- Department of Health Sciences, Faculty of Health Sciences, University of Burgos, 09001 Burgos, Spain
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15
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Burgos J, Viribay A, Fernández-Lázaro D, Calleja-González J, González-Santos J, Mielgo-Ayuso J. Combined Effects of Citrulline Plus Nitrate-Rich Beetroot Extract Co-Supplementation on Maximal and Endurance-Strength and Aerobic Power in Trained Male Triathletes: A Randomized Double-Blind, Placebo-Controlled Trial. Nutrients 2021; 14:40. [PMID: 35010917 PMCID: PMC8746866 DOI: 10.3390/nu14010040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/19/2021] [Accepted: 12/21/2021] [Indexed: 11/24/2022] Open
Abstract
Citrulline (CIT) and nitrate-rich beetroot extract (BR) are ergogenic aids and nitric oxide (NO) precursors. In addition, both supplements seem to have other actions at the level of muscle metabolism that can benefit strength and aerobic power performance. Both supplements have been studied in numerous investigations in isolation. However, scientific evidence combining both supplements is scarce, and to the best of the authors' knowledge, there is no current study of endurance athletes. Therefore, the main purpose of this study was to determine the effect of 9 weeks of CIT plus BR supplementation on maximal and endurance-strength performance and aerobic power in male triathletes. This study was a randomized double-blind, placebo-controlled trial where participants (n = 32) were randomized into four different groups: placebo group (PLG; n = 8), CIT plus BR group (CIT- BRG; 3 g/kg/day of CIT plus 3 mg/kg/day of nitrates (NO3-); n = 8), CIT group (CITG; 3 g/kg/day; n = 8) and BR group (BRG; 3 mg/kg/day of NO3-; n = 8). Before (T1) and after 9 weeks (T2), four physical condition tests were carried out in order to assess sport performance: the horizontal jump test (HJUMP), handgrip dynamometer test, 1-min abdominal tests (1-MAT) and finally, the Cooper test. Although, no significant interactions (time × supplementation groups) were found for the strength tests (p > 0.05), the CIT- BRG supplementation presented a trend on HJUMP and 1-MAT tests confirmed by significant increase between two study moments in CIT-BRG. Likewise, CIT-BRG presented significant interactions in the aerobic power test confirmed by this group's improve estimated VO2max during the study with respect to the other study groups (p = 0.002; η2p = 0.418). In summary, supplementing with 3 g/day of CIT and 2.1 g/day of BR (300 mg/day of NO3-) for 9 weeks could increase maximal and endurance strength. Furthermore, when compared to CIT or BR supplementation alone, this combination improved performance in tests related to aerobic power.
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Affiliation(s)
- José Burgos
- Department of Nursing and Physiotherapy, University of León, 24071 León, Spain
- Burgos Nutrition, Physiology, Nutrition and Sport, 26007 Logroño, Spain;
| | - Aitor Viribay
- Glut4Science, Physiology, Nutrition and Sport, 01004 Vitoria-Gasteiz, Spain;
| | - Diego Fernández-Lázaro
- Department of Cellular Biology, Histology and Pharmacology, Faculty of Health Sciences, University of Valladolid, Campus of Soria, 42003 Soria, Spain;
- Neurobiology Research Group, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
| | - Julio Calleja-González
- Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country, 01007 Vitoria, Spain;
| | - Josefa González-Santos
- Department of Health Sciences, Faculty of Health Sciences, University of Burgos, 09001 Burgos, Spain;
| | - Juan Mielgo-Ayuso
- Department of Health Sciences, Faculty of Health Sciences, University of Burgos, 09001 Burgos, Spain;
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Acute and Chronic Citrulline Malate Supplementation on Muscle Contractile Properties and Fatigue Rate of the Quadriceps. Int J Sport Nutr Exerc Metab 2021; 31:490-496. [PMID: 34470906 DOI: 10.1123/ijsnem.2021-0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 11/18/2022]
Abstract
This study compared the acute and chronic impact of citrulline malate (CM) supplementation on muscle contractile properties and fatigue rate of the quadriceps. Eighteen recreationally trained males consumed both a placebo (PL) and CM treatment for two separate dosing periods. The first experimental testing session for each dosing period was considered the baseline day, the second session the acute day, and the third session the chronic day, which followed seven consecutive days of supplementation. All testing sessions included exercising on a cycle ergometer at 50%-60% of their max power output for 30 min followed by performing the Thorstensson test on an isokinetic dynamometer. A two-way (Supplement × Time) analysis of variance with repeated measures resulted in no significant interactions (p > .05) (PL: baseline day, acute day, chronic day vs. CM: baseline day, acute day, chronic day) for peak power (in watts) (469 ± 81, 490 ± 97, 502 ± 99 vs. 464 ± 85, 480 ± 103, 501 ± 81); peak torque (in newton meters) (150 ± 26, 157 ± 32, 161 ± 31 vs. 149 ± 27, 156 ± 33, 161 ± 26); fatigue rate (in percentage) (57 ± 9, 57 ± 10, 58 ± 9 vs. 57 ± 10, 56 ± 9, 58 ± 9); and heart rate (in beats per minute) (156 ± 17, 146 ± 13, 146 ± 9 vs. 155 ± 11, 146 ± 11, 146 ± 9). The results of this study suggest that neither acute nor chronic supplementation of CM had an effect on recovery or fatigue rate of the quadriceps.
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Gough LA, Sparks SA, McNaughton LR, Higgins MF, Newbury JW, Trexler E, Faghy MA, Bridge CA. A critical review of citrulline malate supplementation and exercise performance. Eur J Appl Physiol 2021; 121:3283-3295. [PMID: 34417881 PMCID: PMC8571142 DOI: 10.1007/s00421-021-04774-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/20/2021] [Indexed: 01/03/2023]
Abstract
As a nitric oxide (NO) enhancer, citrulline malate (CM) has recently been touted as a potential ergogenic aid to both resistance and high-intensity exercise performance, as well as the recovery of muscular performance. The mechanism has been associated with enhanced blood flow to active musculature, however, it might be more far-reaching as either ammonia homeostasis could be improved, or ATP production could be increased via greater availability of malate. Moreover, CM might improve muscle recovery via increased nutrient delivery and/or removal of waste products. To date, a single acute 8 g dose of CM on either resistance exercise performance or cycling has been the most common approach, which has produced equivocal results. This makes the effectiveness of CM to improve exercise performance difficult to determine. Reasons for the disparity in conclusions seem to be due to methodological discrepancies such as the testing protocols and the associated test–retest reliability, dosing strategy (i.e., amount and timing), and the recent discovery of quality control issues with some manufacturers stated (i.e., citrulline:malate ratios). Further exploration of the optimal dose is therefore required including quantification of the bioavailability of NO, citrulline, and malate following ingestion of a range of CM doses. Similarly, further well-controlled studies using highly repeatable exercise protocols with a large aerobic component are required to assess the mechanisms associated with this supplement appropriately. Until such studies are completed, the efficacy of CM supplementation to improve exercise performance remains ambiguous.
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Affiliation(s)
- Lewis A Gough
- Research Centre for Life and Sport Science (CLaSS), Human Performance and Health Research Group, Birmingham City University, Birmingham, UK.
| | - S Andy Sparks
- Sports Nutrition and Performance Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | - Lars R McNaughton
- Sports Nutrition and Performance Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | | | - Josh W Newbury
- Research Centre for Life and Sport Science (CLaSS), Human Performance and Health Research Group, Birmingham City University, Birmingham, UK
| | | | - Mark A Faghy
- Human Sciences Research Centre, University of Derby, Derby, UK
| | - Craig A Bridge
- Sports Nutrition and Performance Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
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18
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Aguiar AF, Casonatto J. Effects of Citrulline Malate Supplementation on Muscle Strength in Resistance-Trained Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Diet Suppl 2021; 19:772-790. [PMID: 34176406 DOI: 10.1080/19390211.2021.1939473] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Although the ergogenic mechanisms of supplementation with citrulline malate are well known, unclear findings regarding variables of muscle strength have been recorded. Such misleading findings in the literature illustrate the need for well-conducted meta-analysis research to elucidate the possible ergogenic impact, which could have major practical consequences for athletes and recreational practitioners seeking to optimize gains in muscle strength. The objective of this systematic review was to summarize the existing literature that evaluated the effects of citrulline malate supplementation on muscle strength outcomes from resistance exercise in resistance-trained individuals. A systematic electronic search in Medline and Scientific Electronic Library Online (SciELO) was completed in August 2020 identifying randomized controlled trials investigating the effect of citrulline malate supplementation on muscle strength in resistance-trained adults. A subsequent meta-analysis was performed. The meta-analysis involved four studies and 138 assessments (69 in citrulline-malate and 69 in placebo groups). We did not observe an overall effect favoring citrulline-malate supplementation (SMD95% = 0.13 [-0.21; 0.46]). Considering the lower (SMD95% = 0.06 [-0.47; 0.60]) and upper (SMD95% = 0.17 [-0.26; 0.60]) limbs, a non-significant overall effect was identified. The mean effects were similar for "limbs" (upper vs lower) [p = 0.763]. Accordingly, our findings suggest that citrulline malate supplementation does not improve muscle strength in healthy and resistance-trained individuals (PROSPERO registration number: CRD42020159338).
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Affiliation(s)
- Andreo F Aguiar
- Research Laboratory in Muscular System and Physical Exercise, University of Northern Paraná, Londrina, Brazil
| | - Juliano Casonatto
- Research Group in Physiology and Physical Activity, University of Northern Paraná, Londrina, Brazil
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Acute Effect of Citrulline Malate on Repetition Performance During Strength Training: A Systematic Review and Meta-Analysis. Int J Sport Nutr Exerc Metab 2021; 31:350-358. [PMID: 34010809 DOI: 10.1123/ijsnem.2020-0295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/25/2020] [Accepted: 01/31/2021] [Indexed: 11/18/2022]
Abstract
Citrulline malate (CitMal) is a dietary supplement that is suggested to enhance strength training performance. However, there is conflicting evidence on this matter. Thus, the purpose of this meta-analysis was to determine whether supplementing with CitMal prior to strength training could increase the total number of repetitions performed before reaching voluntary muscular failure. A systematic search was conducted wherein the inclusion criteria were double-blind, placebo-controlled studies in healthy participants that examined the effect of CitMal on repetitions to failure during upper body and lower body resistance exercises. The Hedges's g standardized mean differences (SMD) between the placebo and CitMal trials were calculated and used in a random effect model. Two separate subanalyses were performed for upper body and lower body exercises. Eight studies, including 137 participants who consisted of strength-trained men (n = 101) and women (n = 26) in addition to untrained men (n = 9), fulfilled the inclusion criteria. Across the studies, 14 single-joint and multijoint exercises were performed with an average of 51 ± 23 total repetitions during 5 ± 3 sets per exercise at ∼70% of one-repetition maximum. Supplementing with 6-8 g of CitMal 40-60 min before exercise increased repetitions by 3 ± 5 (6.4 ± 7.9%) compared with placebo (p = .022) with a small SMD (0.196). The subanalysis for the lower body resulted in a tendency for an effect of the supplement (8.1 ± 8.4%, SMD: 0.27, p = .051) with no significant effect for the upper body (5.7 ± 8.4%, SMD: 0.16, p = .131). The current analysis observed a small ergogenic effect of CitMal compared with placebo. Acute CitMal supplementation may, therefore, delay fatigue and enhance muscle endurance during high-intensity strength training.
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20
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Rhim HC, Kim SJ, Park J, Jang KM. Effect of citrulline on post-exercise rating of perceived exertion, muscle soreness, and blood lactate levels: A systematic review and meta-analysis. JOURNAL OF SPORT AND HEALTH SCIENCE 2020; 9:553-561. [PMID: 33308806 PMCID: PMC7749242 DOI: 10.1016/j.jshs.2020.02.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/04/2019] [Accepted: 12/30/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND Citrulline is one of the non-essential amino acids that is thought to improve exercise performance and reduce post-exercise muscle soreness. We conducted a systematic review and meta-analysis to determine the effect of citrulline supplements on the post-exercise rating of perceived exertion (RPE), muscle soreness, and blood lactate levels. METHODS A random effects model was used to calculate the effect sizes due to the high variability in the study design and study populations of the articles included. A systematic search of PubMed, Web of Science, and ClinicalTrials.gov was performed. Eligibility for study inclusion was limited to studies that were randomized controlled trials involving healthy individuals and that investigated the acute effect of citrulline supplements on RPE, muscle soreness, and blood lactate levels. The supplementation time frame was limited to 2 h before exercise. The types and number of participants, types of exercise tests performed, supplementation protocols for L-citrulline or citrulline malate, and primary (RPE and muscle soreness) and secondary (blood lactate level) study outcomes were extracted from the identified studies. RESULTS The analysis included 13 eligible articles including a total of 206 participants. The most frequent dosage used in the studies was 8 g of citrulline malate. Citrulline supplementation significantly reduced RPE (n = 7, p = 0.03) and muscle soreness 24-h and 48-h after post-exercise (n = 7, p = 0.04; n = 6, p = 0.25, respectively). However, citrulline supplementation did not significantly reduce muscle soreness 72-h post-exercise (n = 4, p = 0.62) or lower blood lactate levels (n = 8, p = 0.17). CONCLUSION Citrulline supplements significantly reduced post-exercise RPE and muscle soreness without affecting blood lactate levels.
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Affiliation(s)
- Hye Chang Rhim
- College of Medicine, Korea University, Seoul 02842, Republic of Korea
| | - Sung Jong Kim
- College of Medicine, Korea University, Seoul 02842, Republic of Korea
| | - Jewel Park
- College of Medicine, Korea University, Seoul 02842, Republic of Korea
| | - Ki-Mo Jang
- College of Medicine, Korea University, Seoul 02842, Republic of Korea; Department of Orthopaedic Surgery, Anam Hospital, Korea University College of Medicine, Seoul 02841, Republic of Korea.
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21
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[The effect of supplementation with L-arginine and L-citrulline on physical performance: a systematic review]. NUTR HOSP 2020; 36:1389-1402. [PMID: 31682459 DOI: 10.20960/nh.02478] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Introduction Introduction: the amino acids L-arginine (L-arg) and L-citrulline (L-citr) have been used in sports nutrition, and it is believed that they have an effect on physical performance. However, current information is varied and inconclusive. Objective: to review and analyze the scientific evidence in the last ten years, which reflects a connection between the effect of L-arg and L-citr supplementation and physical performance. Material and method: this study is a systematic review of articles previously published, following the PRISMA model. Those articles published between 2008 and 2018 that connected the effect of L-arg and L-citr supplementation with physical performance were analyzed. The electronic search was performed on Web of Science, Scopus, Sport Discus, PubMed, and Medline. All articles using a supplementation protocol with these amino acids, separately or in groups, were selected. Results: a total of 38 articles were found, which were stratified according to the established protocol: a) supplementation with L-arg (n = 19); b) supplementation with L-arg and L-citr (n = 1); and c) supplementation with L-citr (n = 18), whether of short or prolonged duration. Conclusion: there is evidence that L-citr works better as ergogenic than L-arg does on physical performance, since L-citr showed a positive effect on the rate of perceived exertion and muscular pain, in addition to a decrease in lactate concentrations and time in maximum tests. However, there is not enough evidence to establish a beneficial L-citr dosage for physical performance.
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22
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Gonzalez AM, Church DD, Townsend JR, Bagheri R. Emerging Nutritional Supplements for Strength and Hypertrophy: An Update of the Current Literature. Strength Cond J 2020. [DOI: 10.1519/ssc.0000000000000552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Rogers JM, Gills J, Gray M. Acute effects of Nitrosigine® and citrulline malate on vasodilation in young adults. J Int Soc Sports Nutr 2020; 17:12. [PMID: 32093766 PMCID: PMC7041093 DOI: 10.1186/s12970-020-00343-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/14/2020] [Indexed: 01/22/2023] Open
Abstract
Background Athletes are increasingly exploring ways to enhance their physical performance. Increasing blood flow to the working tissues through endothelium-dependent vasodilation is one factor athletes use to realize these results. Sports supplements such as pre-workouts tout this benefit; however, many have not been tested under laboratory conditions to examine the effects of commonly used supplements on vasodilation. Two popular supplements are Nitrosigine® and citrulline malate (CM). Thus, the purpose of this experiment was to determine the effects of Nitrosigine and CM on vasodilation using ultrasound and flow mediated dilation (FMD). Methods Healthy, normotensive, and physically active male (n = 16) and female (n = 8) young adults participated in the present investigation. We utilized a randomized, double-blind, within-subjects design where participants reported for three trials, each preceded by a 7-day washout period. Baseline FMD measurement was obtained for each visit, followed by consumption of one clinical dose CM (8 g), Nitrosigine (1.5 g), or dextrose placebo (8 g). Following a 60-min digestion period, FMD was repeated. Supplementation order was randomized controlling for potential order effects. Results Repeated measures ANOVA yielded a significant supplement (3) x time (2) effect (p < .001), such that Nitrosigine and CM yielded a greater improvement in FMD response than placebo. After supplementation, Nitrosigine and CM increased FMD by 31 and 34%, respectively, compared to a decrease of 2% during the placebo trial. After allometric scaling of the FMD values, supplement x time effect remained significant (p = .001) and changes were similar to non-scaled results. Nitrosigine (23%) and CM (25%) generated significantly greater allometric scaled FMD values when compared to the placebo trial (0.60%). Discussion Both Nitrisigine and CM increased endothelial-dependent vasodilation as measured by a change in FMD. Increased vasodilation leads to an increase in skeletal muscle blood flow resulting in potential improvements in exercise performance.
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Affiliation(s)
- Jeffrey M Rogers
- Exercise Science Research Center, University of Arkansas, 1 University of Arkansas, HPER 321-E, Fayetteville, AR, 72701, USA
| | - Joshua Gills
- Exercise Science Research Center, University of Arkansas, 1 University of Arkansas, HPER 321-E, Fayetteville, AR, 72701, USA
| | - Michelle Gray
- Exercise Science Research Center, University of Arkansas, 1 University of Arkansas, HPER 321-E, Fayetteville, AR, 72701, USA.
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Gonzalez AM, Trexler ET. Effects of Citrulline Supplementation on Exercise Performance in Humans: A Review of the Current Literature. J Strength Cond Res 2020; 34:1480-1495. [DOI: 10.1519/jsc.0000000000003426] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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25
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Yang JA, Lee KE, Park JH, Yee J, Kim JY, Gwak HS. Effects of Citrulline Supplementation on Body Weight in Patients With Hepatobiliary Pancreatic Surgery. Nutr Clin Pract 2019; 35:323-330. [PMID: 31606911 DOI: 10.1002/ncp.10395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Many health benefits have been proposed for citrulline, but they lack evidence based on human research. This study was to evaluate whether an oral citrulline supplement affects body weight changes and laboratory values in patients with hepatobiliary and pancreatic surgery. METHODS Patients who underwent hepatobiliary and pancreatic surgery during January to June 2015 were screened for analysis. Patients using citrulline during hospital stay and at discharge were classified as the citrulline group, whereas those without any records of citrulline were designated as the control group. The primary efficacy outcome was the change in body weight at discharge and at first outpatient visit. Other outcomes included change in laboratory values. RESULTS A total of 138 patients were included in analysis. Citrulline group and control group did not differ with respect to baseline characteristics except for white blood cell count. Percent in change of body weight and body mass index from discharge to first outpatient visit was significantly different between the 2 groups, showing less weight loss in citrulline group than in controls (-0.8 ± 2.7% vs -2.5 ± 3.8%, P < 0.05). Especially in men, citrulline use significantly affected weight loss from the multivariate analysis (P < 0.05); percent change in weight in citrulline group was predicted to increase by 2.1 units. During hospital stay, significant differences between the 2 groups were found in changes of cholesterol and protein levels. CONCLUSION Citrulline supplement reduced weight loss in surgical patients during recovery.
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Affiliation(s)
- Jin A Yang
- Graduate School of Converging Clinical & Public Health, Ewha Womans University, Seoul, Republic of Korea.,Department of Pharmacy, Asan Medical Center, Songpa-gu, Seoul, Republic of Korea
| | - Kyung Eun Lee
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Ji Hyun Park
- College of Pharmacy & Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea.,College of Pharmacy, Korea University, Sejong-si, Republic of Korea
| | - Jeong Yee
- College of Pharmacy & Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Jae Youn Kim
- Department of Pharmacy, Asan Medical Center, Songpa-gu, Seoul, Republic of Korea
| | - Hye Sun Gwak
- Graduate School of Converging Clinical & Public Health, Ewha Womans University, Seoul, Republic of Korea.,College of Pharmacy & Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
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Blohm K, Beidler J, Rosen P, Kressler J, Hong MY. Effect of acute watermelon juice supplementation on post-submaximal exercise heart rate recovery, blood lactate, blood pressure, blood glucose and muscle soreness in healthy non-athletic men and women. Int J Food Sci Nutr 2019; 71:482-489. [PMID: 31597484 DOI: 10.1080/09637486.2019.1675604] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The objective of this study was to determine the effects of a single pre-exercise dose of watermelon juice on submaximal post-exercise heart rate (HR) recovery, blood lactate (BL), blood pressure (BP), blood glucose (BG), and muscle soreness in healthy adults. In a randomised crossover design, 27 healthy non-athletic participants (13 males/14 females) consumed 355 mL of watermelon juice, Gatorade, sugar water, or water. HR and BL were significantly higher post-exercise, and both watermelon juice and sugar water increased postprandial BG. However, there were no significant differences among the supplements in HR recovery, BL, or post-exercise muscle soreness. Watermelon juice prevented increased post-exercise systolic and diastolic BP in females, but not in males. More research is warranted to examine the effect of sex on the efficacy of watermelon consumption for controlling BP.
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Affiliation(s)
- Kara Blohm
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Joshua Beidler
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Phil Rosen
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Jochen Kressler
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Mee Young Hong
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
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Citrulline malate supplementation might potentiate post-exercise hypotension in hypertensives: A 24-hour analysis. Sci Sports 2019. [DOI: 10.1016/j.scispo.2019.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Trexler ET, Keith DS, Schwartz TA, Ryan ED, Stoner L, Persky AM, Smith-Ryan AE. Effects of Citrulline Malate and Beetroot Juice Supplementation on Blood Flow, Energy Metabolism, and Performance During Maximum Effort Leg Extension Exercise. J Strength Cond Res 2019; 33:2321-2329. [DOI: 10.1519/jsc.0000000000003286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Trexler ET, Keith DS, Lucero AA, Stoner L, Schwartz TA, Persky AM, Ryan ED, Smith-Ryan AE. Effects of Citrulline Malate and Beetroot Juice Supplementation on Energy Metabolism and Blood Flow During Submaximal Resistance Exercise. J Diet Suppl 2019; 17:698-717. [DOI: 10.1080/19390211.2019.1650866] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Eric T. Trexler
- Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina, Chapel Hill, NC, USA
- Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
| | - Dale S. Keith
- Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
| | - Adam A. Lucero
- School of Sport, Exercise and Nutrition, Massey University, Wellington, NZ
| | - Lee Stoner
- Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina, Chapel Hill, NC, USA
- Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
| | - Todd A. Schwartz
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Adam M. Persky
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | - Eric D. Ryan
- Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina, Chapel Hill, NC, USA
- Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
| | - Abbie E. Smith-Ryan
- Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina, Chapel Hill, NC, USA
- Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
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Iraki J, Fitschen P, Espinar S, Helms E. Nutrition Recommendations for Bodybuilders in the Off-Season: A Narrative Review. Sports (Basel) 2019; 7:E154. [PMID: 31247944 PMCID: PMC6680710 DOI: 10.3390/sports7070154] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 01/26/2023] Open
Abstract
Many nutrition practices often used by bodybuilders lack scientific support and can be detrimental to health. Recommendations during the dieting phase are provided in the scientific literature, but little attention has been devoted to bodybuilders during the off-season phase. During the off-season phase, the goal is to increase muscle mass without adding unnecessary body fat. This review evaluated the scientific literature and provides nutrition and dietary supplement recommendations for natural bodybuilders during the off-season phase. A hyper-energetic diet (~10-20%) should be consumed with a target weight gain of ~0.25-0.5% of bodyweight/week for novice/intermediate bodybuilders. Advanced bodybuilders should be more conservative with the caloric surplus and weekly weight gain. Sufficient protein (1.6-2.2 g/kg/day) should be consumed with optimal amounts 0.40-0.55 g/kg per meal and distributed evenly throughout the day (3-6 meals) including within 1-2 hours pre- and post-training. Fat should be consumed in moderate amounts (0.5-1.5 g/kg/day). Remaining calories should come from carbohydrates with focus on consuming sufficient amounts (≥3-5 g/kg/day) to support energy demands from resistance exercise. Creatine monohydrate (3-5 g/day), caffeine (5-6 mg/kg), beta-alanine (3-5 g/day) and citrulline malate (8 g/day) might yield ergogenic effects that can be beneficial for bodybuilders.
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Affiliation(s)
- Juma Iraki
- Iraki Nutrition AS, 2008 Fjerdingby, Norway.
| | | | | | - Eric Helms
- Sport Performance Research Institute New Zealand (SPRINZ) at AUT Millennium, Auckland University of Technology, Auckland 0632, New Zealand
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The Effect of Watermelon Beverage Ingestion on Fatigue Index in Young-Male, Recreational Football Players. Asian J Sports Med 2019. [DOI: 10.5812/asjsm.86555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Effects of dietary sports supplements on metabolite accumulation, vasodilation and cellular swelling in relation to muscle hypertrophy: A focus on “secondary” physiological determinants. Nutrition 2019; 60:241-251. [DOI: 10.1016/j.nut.2018.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/29/2018] [Accepted: 10/07/2018] [Indexed: 01/10/2023]
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Trexler ET, Persky AM, Ryan ED, Schwartz TA, Stoner L, Smith-Ryan AE. Acute Effects of Citrulline Supplementation on High-Intensity Strength and Power Performance: A Systematic Review and Meta-Analysis. Sports Med 2019; 49:707-718. [DOI: 10.1007/s40279-019-01091-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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GRANDOLFI K, CAVALARI JV, GÓES RC, POLITO MD, CASONATTO J. Acute citrulline oral supplementation induces greater post-exercise hypotension response in hypertensive than normotensive individuals. REV NUTR 2018. [DOI: 10.1590/1678-98652018000600001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT Objective To investigate whether acute citrulline supplementation might influence post-exercise hypotension in normotensive and hypertensive individuals. Methods Following a randomized double-blind design, twenty normotensive (28±7 years, 74±17kg, 1.7±0.09m) and 20 hypertensive individuals (55±12 years, 76±15kg, 1.59±0.09m) were randomly assigned to one of the four experimental groups (Normotensive-Placebo; Normotensive-Citrulline; Hypertensive-Placebo; Hypertensive-Citrulline). The placebo groups ingested 6g of corn starch and the citrulline groups ingested 6g of citrulline dissolved in water. The participants performed 40 minutes of walking/running on a treadmill at 60-70% heart rate reserve. Blood pressure was measured immediately after a 60-min exercise session using an oscillometric device and 24-h ambulatory monitoring. Results The post-exercise hypotension was more pronounced in hypertensives and the Hypertensive-Citrulline group showed a consistent systolic blood pressure reduction during the laboratorial phase, which can be seen by looking at the mean of 60 minutes (-15.01mmHg vs -3.14mmHg [P=0.005]; -4.16mmHg [P=0.009]; -6.30mmHg [P=0.033] in comparison with the Normotensive-Placebo, Normotensive-Citrulline, and Hypertensive-Placebo groups, respectively). During ambulatory blood pressure monitoring, the Hypertensive-Citrulline group showed a significant reduction in systolic blood pressure (-21.05mmHg) in the awake period compared with the Normotensive-Citrulline group (-3.17mmHg [P=0.010]). Conclusion Acute citrulline oral supplementation can induce greater post-exercise hypotension response in hypertensive than normotensive individuals.
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Kandinasti S, Farapti F. Obesitas: Pentingkah Memperhatikan Konsumsi Makanan di Akhir Pekan? AMERTA NUTRITION 2018. [DOI: 10.20473/amnt.v2i4.2018.307-316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: The prevalence of obesity in all age groups has increased in some countries. Epidemiological studies indicated that the intake of energy and macronutrient over the weekend were increasing rather than on weekdays and contributed to the incidence of obesity. Objectives: The aim of this literature review is to analyze the different between intake of energy and macronutrients in weekdays compared to weekend and how it contributes to obesity . Methode: The literature review method used international journal article that was searched using the electronic database such as Medline NCBI (National Center for Biotechnology Information), embases, and google scholar.Result: The results showed that energy and macronutrient intake were increasing over the weekend than on weekdays. Consumption of unhealthy food on weekend such as foods and beverages with high sugar, high fat and alcohol increase the energy and play a role in the incidence of obesity. Conclusion: The health promotion concerning food intake on weekdays and weekend both in terms of quantity and quality is needed for obesity prevention.ABSTRAKLatar belakang: Prevalensi obesitas pada semua kelompok umur meningkat di hampir seluruh negara di dunia. Studi epidemiologi menunjukkan bahwa asupan energi dan zat gizi makro diakhir pekan meningkat dibandingkan hari biasa dan berperan pada kejadian obesitas.Tujuan: Tujuan dari literatur review ini adalah untuk menganalisis perbedaan asupan energi dan zat gizi makro diakhir pekan dibandingkan hari biasa dan bagaimana kontribusinya terhadap obesitas.Metode: Metode yang digunakan adalah metode penelusuran artikel jurnal internasional yang ditelusuri menggunakan electronic database seperti medline NCBI (National Center for Biotechnology Information), embase, dan penelusuran dengan google schoolar.Hasil: Hasil telaah beberapa artikel menunjukan bahwa rata-rata asupan energi dan zat gizi makro mengalami peningkatan saat akhir pekan dibandingkan hari biasa. Konsumsi unhealthy food di akhir pekan seperti makanan dan minuman dengan kandungan tinggi gula, tinggi lemak, dan alkohol tampaknya menyebabkan peningkatan kalori dan berperan pada insiden obesitas.Kesimpulan: Diperlukan upaya pencegahan obesitas melalui promosi kesehatan masyarakat dengan memperhatikan asupan makanan saat hari libur baik dari segi kuantitas maupun kualitasnya.
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Rizal M, Segalita C. Peran Asam Amino Sitrulin dalam Meningkatkan Performa Olahraga Pada Atlet. AMERTA NUTRITION 2018. [DOI: 10.20473/amnt.v2i4.2018.299-306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Citrulline is an ergogenic non-essential amino acid which is able to increase production, efficiency, and use of energy, as well as performance in sport. Purpose: The objective of this literature review was to explain the role of citrulline in improving exercise performance through both aerobic and anaerobic metabolic pathways. Discussion: The results showed evidence that citrulline has role in improving exercise performance. Several articles indicate that the consumption of citrulline either supplement or watermelon given during certain period or acute before the test might increase VO2max, retard muscle fatigue, and decrease delayed onset muscle soreness. Some studies used 6-8 g citrulline before exercise, but lower dose was used in some other studies. Conclusion: Amino acids citrulline either supplement or watermelon is believed to have role in improving exercise performance in athletes although there is no recommendation dose has been found. ABSTRAKLatar Belakang: Sitrulin merupakan asam amino non esensial yang bersifat ergogenik yaitu dapat meningkatkan produksi, efisiensi, dan penggunaan energi serta performa olahraga.Tujuan: Tujuan penulisan kajian pustaka ini adalah untuk menjabarkan peran sitrulin dalam meningkatkan performa olahraga melalui jalur metabolisme baik aerobik maupun anaerobik.Ulasan: Hasil literature review menunjukkan bukti bahwa sitrulin memiliki peran dalam meningkatkan performa olahraga atlet. Beberapa artikel menunjukkan bahwa konsumsi sitrulin baik dalam bentuk suplemen maupun buah semangka yang diberikan selama jangka waktu tertentu maupun sesaat sebelum dilakukan tes latihan fisik mampu meningkatkan VO2max, menunda kelelahan otot, dan mengurangi rasa nyeri otot pasca latihan. Beberapa penelitian menggunakan dosis 6-8 g sitrulin sebelum olahraga, beberapa penelitian lain menggunakan dosis yang lebih rendah.Kesimpulan: Asam amino sitrulin baik dalam bentuk suplemen maupun buah semangka diyakini memiliki peran dalam meningkatkan performa olahraga atlet walaupun rekomendasi dosis baku yang disarankan belum ditemukan.
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Chappell AJ, Allwood DM, Simper TN. Citrulline Malate Fails to Improve German Volume Training Performance in Healthy Young Men and Women. J Diet Suppl 2018; 17:249-260. [DOI: 10.1080/19390211.2018.1513433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Andrew J. Chappell
- Food and Nutrition Group, Sheffield School of Business, Sheffield Hallam University, Sheffield, UK
| | - Daniel M. Allwood
- Department of Biosciences and Chemistry, Sheffield Hallam University, Sheffield, UK
| | - Trevor N. Simper
- Food and Nutrition Group, Sheffield School of Business, Sheffield Hallam University, Sheffield, UK
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Gonzalez AM, Spitz RW, Ghigiarelli JJ, Sell KM, Mangine GT. Acute Effect of Citrulline Malate Supplementation on Upper-Body Resistance Exercise Performance in Recreationally Resistance-Trained Men. J Strength Cond Res 2018; 32:3088-3094. [DOI: 10.1519/jsc.0000000000002373] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Chappell AJ, Allwood DM, Johns R, Brown S, Sultana K, Anand A, Simper T. Citrulline malate supplementation does not improve German Volume Training performance or reduce muscle soreness in moderately trained males and females. J Int Soc Sports Nutr 2018; 15:42. [PMID: 30097067 PMCID: PMC6086018 DOI: 10.1186/s12970-018-0245-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Use of supplements to aid performance is common practice amongst recreationally active individuals, including those without a sufficient evidence base. This investigation sought to assess whether acute supplementation with 8 g of citrulline malate (CM) (1.11: 1 ratio) would improve anaerobic performance. METHODS A randomised double blind placebo control trial was employed, using a counterbalanced design. We recruited recreationally active men and women to take part in an isokinetic chair protocol, based on German Volume Training (GVT) whereby participants attempted to perform 10 sets of 10 repetitions against a force representing 70% of their peak concentric force. RESULTS The number of repetitions achieved over the course of the GVT was 94.0 ± 7.9 and 90.9 ± 13.9 for placebo and CM respectively. There was no significant difference between the placebo and CM treatment for number of repetitions (P = 0.33), isometric (P = 0.60), concentric (P = 0.38), or eccentric (P = 0.65) peak force following the GVT. Total muscle soreness was significantly higher in the CM compared to the placebo treatment following the GVT protocol over 72 h (P = 0.01); although this was not accompanied by a greater workload/number of repetitions in the CM group. CONCLUSIONS We conclude that an acute dose of CM does not significantly affect anaerobic performance using an isokinetic chair in recreational active participants. Practical implications include precaution in recommending CM supplementation. Coaches and athletes should be aware of the disparity between the chemical analyses of the products reviewed in the present investigation versus the manufacturers' claims.
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Affiliation(s)
- Andrew J Chappell
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK.
| | - Daniel M Allwood
- Department of Biosciences and Chemistry, Sheffield Hallam University, Owen Building, City Campus, Sheffield, UK
| | - Rebecca Johns
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK
| | - Samantha Brown
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK
| | - Kiran Sultana
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK
| | - Annie Anand
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK
| | - Trevor Simper
- Food and Nutrition group, Sheffield Business School, Sheffield Hallam University, Stoddard Building, City Campus, Sheffield, UK
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Kerksick CM, Wilborn CD, Roberts MD, Smith-Ryan A, Kleiner SM, Jäger R, Collins R, Cooke M, Davis JN, Galvan E, Greenwood M, Lowery LM, Wildman R, Antonio J, Kreider RB. ISSN exercise & sports nutrition review update: research & recommendations. J Int Soc Sports Nutr 2018; 15:38. [PMID: 30068354 PMCID: PMC6090881 DOI: 10.1186/s12970-018-0242-y] [Citation(s) in RCA: 380] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/17/2018] [Indexed: 12/18/2022] Open
Abstract
Background Sports nutrition is a constantly evolving field with hundreds of research papers published annually. In the year 2017 alone, 2082 articles were published under the key words ‘sport nutrition’. Consequently, staying current with the relevant literature is often difficult. Methods This paper is an ongoing update of the sports nutrition review article originally published as the lead paper to launch the Journal of the International Society of Sports Nutrition in 2004 and updated in 2010. It presents a well-referenced overview of the current state of the science related to optimization of training and performance enhancement through exercise training and nutrition. Notably, due to the accelerated pace and size at which the literature base in this research area grows, the topics discussed will focus on muscle hypertrophy and performance enhancement. As such, this paper provides an overview of: 1.) How ergogenic aids and dietary supplements are defined in terms of governmental regulation and oversight; 2.) How dietary supplements are legally regulated in the United States; 3.) How to evaluate the scientific merit of nutritional supplements; 4.) General nutritional strategies to optimize performance and enhance recovery; and, 5.) An overview of our current understanding of nutritional approaches to augment skeletal muscle hypertrophy and the potential ergogenic value of various dietary and supplemental approaches. Conclusions This updated review is to provide ISSN members and individuals interested in sports nutrition with information that can be implemented in educational, research or practical settings and serve as a foundational basis for determining the efficacy and safety of many common sport nutrition products and their ingredients.
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Affiliation(s)
- Chad M Kerksick
- Exercise and Performance Nutrition Laboratory, School of Health Sciences, Lindenwood University, St. Charles, MO, USA.
| | - Colin D Wilborn
- Exercise & Sport Science Department, University of Mary-Hardin Baylor, Belton, TX, USA
| | | | - Abbie Smith-Ryan
- Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA
| | | | | | - Rick Collins
- Collins Gann McCloskey and Barry PLLC, Mineola, NY, USA
| | - Mathew Cooke
- Department of Health and Medical Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Jaci N Davis
- Exercise & Sport Science Department, University of Mary-Hardin Baylor, Belton, TX, USA
| | - Elfego Galvan
- University of Texas Medical Branch, Galveston, TX, USA
| | - Mike Greenwood
- Exercise & Sports Nutrition Lab, Human Clinical Research Facility, Texas A&M University, College Station, TX, USA
| | - Lonnie M Lowery
- Department of Human Performance & Sport Business, University of Mount Union, Alliance, OH, USA
| | | | - Jose Antonio
- Department of Health and Human Performance, Nova Southeastern University, Davie, FL, USA
| | - Richard B Kreider
- Exercise & Sports Nutrition Lab, Human Clinical Research Facility, Texas A&M University, College Station, TX, USA.
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Hwang P, Morales Marroquín FE, Gann J, Andre T, McKinley-Barnard S, Kim C, Morita M, Willoughby DS. Eight weeks of resistance training in conjunction with glutathione and L-Citrulline supplementation increases lean mass and has no adverse effects on blood clinical safety markers in resistance-trained males. J Int Soc Sports Nutr 2018; 15:30. [PMID: 29945625 PMCID: PMC6020314 DOI: 10.1186/s12970-018-0235-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 06/22/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Supplementation of combined glutathione (GSH) with L-citrulline in response to a single bout of resistance exercise has been shown to increase plasma nitric oxide metabolites, nitrite and nitrate and cyclic guanosine monophosphate (cGMP), which may play a role in muscle protein synthesis. As a result, in response to resistance training (RT) these responses may establish a role for GSH + L-citrulline to increase muscle mass. This study attempted to determine the effects of an 8-week RT program in conjunction with GSH (Setria®) + L-citrulline, L-citrulline-malate, or placebo supplementation on lean mass and its association with muscle strength. The secondary purpose was to assess the safety of such supplementation protocol by assessing clinical chemistry markers. METHODS In a randomized, double-blind, placebo-controlled design, 75 resistance-trained males were randomly assigned to ingest GSH + L-citrulline (GSH + CIT), L-citrulline-malate, or cellulose placebo daily while also participating in 8 weeks of RT. The full dose of each supplement was delivered in capsules that were identical in weight, size, shape, and color. Participants completed testing sessions for body composition and muscle strength before and after 4 and 8 weeks of RT and supplementation. Venous blood samples were obtained before and after 8 weeks. RESULTS Leg press was increased with RT but was not significantly different between groups (p > 0.05); however, bench press strength was not increased with RT (p > 0.05). There were no significant changes in total body mass, fat mass, or total body water during 8 weeks of RT and supplementation. Lean mass increased in both GSH + CIT when compared to PLC; however, the increase was significant only after 4 weeks. Lean mass and strength were positively correlated (p < 0.05) in GSH + CIT, but not CIT-malate or PLC. Neither RT nor supplementation had any significant effects on blood clinical chemistry variables (p > 0.05). CONCLUSION Compared to PLC, supplementation of GSH + CIT during resistance training increased lean mass after 4 weeks of RT and was positively associated with muscle strength. However, after 8 weeks of RT there were no significant differences in any of the measured variables.
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Affiliation(s)
- Paul Hwang
- Exercise and Biochemical Nutritional Lab, Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX, USA
| | - Flor E Morales Marroquín
- Exercise and Biochemical Nutritional Lab, Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX, USA
| | - Josh Gann
- Department of Kinesiology, University of Louisiana Monroe, Monroe, LA, USA
| | - Tom Andre
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, University, MS, USA
| | | | - Caelin Kim
- Exercise and Biochemical Nutritional Lab, Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX, USA
| | - Masahiko Morita
- Function Research Group, Healthcare Products Development Center, Kyowa Hakko Bio Co., Ltd., 2, Miyukigaoka, Tsukuba, Ibaraki, Japan
| | - Darryn S Willoughby
- Exercise and Biochemical Nutritional Lab, Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX, USA.
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Goron A, Moinard C. Amino acids and sport: a true love story? Amino Acids 2018; 50:969-980. [PMID: 29855718 DOI: 10.1007/s00726-018-2591-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/17/2018] [Indexed: 12/28/2022]
Abstract
Among a plethora of dietary supplements, amino acids are very popular with athletes for several reasons (e.g., to prevent nutritional deficiency, improve muscle function, and decrease muscle damages) whose purpose is to improve performance. However, it is difficult to get a clear idea of which amino acids have real ergogenic impact. Here, we review and analyze the clinical studies evaluating specific amino acids (glutamine, arginine, leucine, etc.) in athletes. Only english-language clinical studies evaluating a specific effect of one amino acid were considered. Despite promising results, many studies have methodological limits or specific flaws that do not allow definitive conclusions. To date, only chronic β-alanine supplementation demonstrated an ergogenic effect in athletes. Much research is still needed to gain evidence-based data before any other specific amino acid can be recommended for use in athletes.
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Affiliation(s)
- Arthur Goron
- Laboratory of Fundamental and Applied Bioenergetics (LBFA), INSERM U 1055 and SFR Environmental and Systems Biology (BEeSy), University Grenoble Alpes, Grenoble, France.
| | - Christophe Moinard
- Laboratory of Fundamental and Applied Bioenergetics (LBFA), INSERM U 1055 and SFR Environmental and Systems Biology (BEeSy), University Grenoble Alpes, Grenoble, France
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da Silva DK, Jacinto JL, de Andrade WB, Roveratti MC, Estoche JM, Balvedi MCW, de Oliveira DB, da Silva RA, Aguiar AF. Citrulline Malate Does Not Improve Muscle Recovery after Resistance Exercise in Untrained Young Adult Men. Nutrients 2017; 9:E1132. [PMID: 29057836 PMCID: PMC5691748 DOI: 10.3390/nu9101132] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/03/2017] [Accepted: 10/10/2017] [Indexed: 01/21/2023] Open
Abstract
The effects of citrulline malate (CM) on muscle recovery from resistance exercise remains unknown. We aimed to determine if citrulline malate supplementation improves muscle recovery after a single session of high-intensity resistance exercise (RE) in untrained young adult men. Nine young adult men (24.0 ± 3.3 years) participated in a double-blind crossover study in which they received 6 g of CM and placebo (PL) on two occasions, separated by a seven-day washout period. Each occasion consisted of a single session of high-intensity RE (0 h) and three subsequent fatigue tests sessions (at 24, 48, and 72 h) to assess the time course of muscle recovery. During the tests sessions, we assessed the following variables: number of maximum repetitions, electromyographic signal (i.e., root mean square (RMS) and median frequency (MF)), muscle soreness and perceived exertion, as well as blood levels of creatine kinase (CK), lactate, insulin, and testosterone:cortisol ratio. CK levels increased at 24 h post-exercise and remained elevate at 48 and 72 h, with no difference between CM and PL conditions. Muscle soreness increased at 24 h post-exercise, which progressively returned to baseline at 72 h in both conditions. Lactate levels increased immediately post-exercise and remained elevated at 24, 48, and 72 h in both conditions. No significant treatment × time interaction was found for all dependents variables (maximum repetitions, perceived exertion, CK, lactate, RMS, MF, and testosterone:cortisol ratio) during the recovery period. In conclusion, our data indicate that CM supplementation (single 6 g dose pre-workout) does not improve the muscle recovery process following a high-intensity RE session in untrained young adult men.
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Affiliation(s)
- Douglas K da Silva
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Jeferson L Jacinto
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Walquiria B de Andrade
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Mirela C Roveratti
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - José M Estoche
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Mario C W Balvedi
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Douglas B de Oliveira
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
| | - Rubens A da Silva
- Laboratory of Functional Evaluation and Human Motor Performance, LAFUP, Center for Research in Health Sciences, North Univeristy of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
- Département des Sciences de la Santé, Programme de Physiothérapie de L'université McGill Offert en Extension à L'UNIVERSITÉ du Québec à Chicoutimi (UQAC), 555 boul. De L'université, ville du Saguenay, Québec, QC G7H 5B8, Canada.
| | - Andreo F Aguiar
- Center for Research in Health Sciences, North University of Paraná (UNOPAR), 675 Paris Ave., Londrina 86041-120, Brazil.
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Kiyici F, Eroğlu H, Kishali NF, Burmaoglu G. The Effect of Citrulline/Malate on Blood Lactate Levels in Intensive Exercise. Biochem Genet 2017; 55:387-394. [PMID: 28664349 DOI: 10.1007/s10528-017-9807-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 06/14/2017] [Indexed: 12/30/2022]
Abstract
The purpose of this study was to examine the effects of Citrulline/Malate supplementation with intensive training on blood lactate level in active handball players. The athletes were subjected to intense training for 4 weeks, 4 days a week, mainly pre-season strength and technique training. In this training period, stimol group (n = 11) athletes were given stimol 3 times a day as 1 g for breakfast, 1 g for lunch, and 1 g for dinner while the placebo group (n = 11) athletes were given only placebo in the same dosage and the same color at the same time. Blood lactate levels in athletes were measured 4 times, prior to and after a 1-month program as follows: rest (R), end effort (EE), recuperation 5 min (R5 m), and recuperation 20 min (R20 m). Blood lactate levels were compared both as intra-group and between the groups. In intra-group comparison, no change was observed in blood lactate levels in placebo group while a significant difference was found in the levels of stimol group as p < 0.05 with a 49.8% decrease in blood lactate level. In the measurements between groups, in the post-test measurements made after the training period, significant differences as p < 0.05 were found with a 60.7% decrease in blood lactate level EE. Considerable decline was seen especially immediately after exercise in blood lactate levels of the athletes being given stimol supplement. In this case, we can say that Citrulline/Malate supplementation may contribute positively to the performance of athletes and may help postpone fatigue at excessive or prolonged activity.
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Affiliation(s)
- Fatih Kiyici
- Faculty of Sport Sciences, Ataturk University, 25240, Erzurum, Turkey.
| | - Hüseyin Eroğlu
- Department of Physical Education and Sport, Kahramanmaraş Sütcü Imam University, Kahramanmaraş, Turkey
| | - N Fazil Kishali
- Faculty of Sport Sciences, Ataturk University, 25240, Erzurum, Turkey
| | - Guleda Burmaoglu
- Faculty of Sport Sciences, Ataturk University, 25240, Erzurum, Turkey
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Martínez-Sánchez A, Ramos-Campo DJ, Fernández-Lobato B, Rubio-Arias JA, Alacid F, Aguayo E. Biochemical, physiological, and performance response of a functional watermelon juice enriched in L-citrulline during a half-marathon race. Food Nutr Res 2017; 61:1330098. [PMID: 28659740 PMCID: PMC5475291 DOI: 10.1080/16546628.2017.1330098] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/09/2017] [Indexed: 01/04/2023] Open
Abstract
Background: Watermelon is a rich natural source of l-citrulline. This non-essential amino acid increases exercise performance. Objective: Evaluate the effect of Fashion watermelon juice enriched in l-citrulline (CWJ) (3.45 g per 500 mL) in physical performance and biochemical markers after a half-marathon race. Design: A randomised, double blind, crossover design where 2 h after drinking 500 mL of CWJ or placebo (PLA, beverage without l-citrulline) amateur male runners performed two half-marathon races. Jump height, heart rate and rating of perceived exertion were evaluated before and after the races. Moreover, muscle soreness and plasma markers of muscle damage and metabolism were evaluated for 72 h after the races. Results: Muscle soreness perception was significantly lower from 24 to 72 h after the race with CWJ beverage. Immediately after the races, runners under CWJ condition showed plasma lactate and glucose concentrations significantly lower and higher lactate dehydrogenase and l-arginine concentration than runners under PLA. A maintenance of jump heights after the races under CWJ supplementation was found, decreasing significantly with PLA. Conclusion: A single Fashion watermelon juice enriched in l-citrulline dose diminished muscle soreness perception from 24 to 72 h after the race and maintained lower concentrations of plasma lactate after an exhausting exercise.
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Affiliation(s)
- Ascensión Martínez-Sánchez
- Food Quality and Health Group, Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar, Cartagena, Spain
| | - Domingo J Ramos-Campo
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM), Murcia, Spain
| | | | - Jacobo A Rubio-Arias
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM), Murcia, Spain
| | - Fernando Alacid
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM), Murcia, Spain
| | - Encarna Aguayo
- Food Quality and Health Group, Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar, Cartagena, Spain
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Martínez-Sánchez A, Alacid F, Rubio-Arias JA, Fernández-Lobato B, Ramos-Campo DJ, Aguayo E. Consumption of Watermelon Juice Enriched in l-Citrulline and Pomegranate Ellagitannins Enhanced Metabolism during Physical Exercise. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4395-4404. [PMID: 28513179 DOI: 10.1021/acs.jafc.7b00586] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
l-Citrulline is a nonessential amino acid precursor of arginine and indirectly a precursor of nitric oxide (NO), which is a vasodilator and increases mitochondrial respiration. On the other hand, the antioxidant pomegranate ellagitannins are precursors of urolithin A, which has been associated with mitophagy and increased muscle function. To elucidate if a single dose of watermelon enrichment with these compounds could have a positive effect after high-intensity exercise (eight sets of eight repetitions of half-squat exercise), a double-blind randomized crossover in vivo study was performed in healthy male subjects (n = 19). Enrichment juices maintained basal levels of blood markers of muscle damage, such as lactate dehydrogenase and myoglobin, and showed a significant maintenance of force during the exercise and a significant decrease in the rating of perceived exertion and muscle soreness after exercise. A positive effect was observed between l-citrulline and ellagitannins, improving the ergogenic effect of watermelon juice.
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Affiliation(s)
- Ascensión Martínez-Sánchez
- Food Quality and Health Group, Institute of Plant Biotechnology (UPCT) , Campus Muralla del Mar, 30202 Cartagena, Spain
| | - Fernando Alacid
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM) , Los Jerónimos Road 135, Guadalupe, Murcia, Spain
| | - Jacobo A Rubio-Arias
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM) , Los Jerónimos Road 135, Guadalupe, Murcia, Spain
| | - Bárbara Fernández-Lobato
- Food Quality and Health Group, Institute of Plant Biotechnology (UPCT) , Campus Muralla del Mar, 30202 Cartagena, Spain
- Pharmacy Departament, Hospital General Universitario Santa Lucı́a , Mezquita s/n, 30202 Cartagena, Spain
| | - Domingo J Ramos-Campo
- Department of Physical Activity and Sport Science, Faculty of Sport, Catholic University of Murcia (UCAM) , Los Jerónimos Road 135, Guadalupe, Murcia, Spain
| | - Encarna Aguayo
- Food Quality and Health Group, Institute of Plant Biotechnology (UPCT) , Campus Muralla del Mar, 30202 Cartagena, Spain
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Glenn JM, Gray M, Jensen A, Stone MS, Vincenzo JL. Acute citrulline-malate supplementation improves maximal strength and anaerobic power in female, masters athletes tennis players. Eur J Sport Sci 2016; 16:1095-103. [DOI: 10.1080/17461391.2016.1158321] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Glenn JM, Gray M, Wethington LN, Stone MS, Stewart RW, Moyen NE. Acute citrulline malate supplementation improves upper- and lower-body submaximal weightlifting exercise performance in resistance-trained females. Eur J Nutr 2015; 56:775-784. [DOI: 10.1007/s00394-015-1124-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 11/29/2015] [Indexed: 02/07/2023]
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