scholarly journals The effects of 14-week betaine supplementation on endocrine markers, body composition and anthropometrics in professional youth soccer players: a double blind, randomized, placebo-controlled trial

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Hadi Nobari ◽  
Mehdi Kargarfard ◽  
Vazgen Minasian ◽  
Jason M. Cholewa ◽  
Jorge Pérez-Gómez
Keyword(s):  
Body Composition ◽  
Controlled Trial ◽  
Exercise Program ◽  
Soccer Players ◽  
Double Blind ◽  
Significant Group ◽  
Youth Soccer ◽  
Professional Soccer ◽  
Competitive Season ◽  
Betaine Supplementation

Abstract Objective Betaine supplementation may enhance body composition outcomes when supplemented chronically during an exercise program. The purpose of this study was to evaluate the effect of betaine supplementation on development-related hormones, body composition, and anthropometrics in professional youth soccer players during a competitive season. Methods Twenty-nine players (age, 15.45 ± 0.25 years) were matched based upon position and then randomly assigned to a betaine group (2 g/day; n = 14, BG) or placebo group (PG, n = 15). All subjects participated in team practices, conditioning, and games. If a subject did not participate in a game, a conditioning protocol was used to ensure workload was standardized throughout the 14-week season. Growth hormone (GH), insulin-like growth factor-1 (IGF-1), testosterone, cortisol, height, weight, and body composition were assessed at pre-season (P1), mid-season (P2) and post-season (P3). Anthropometric variables were also measured following a one-year follow-up (F). Results Significant (p < 0.05) group x time interactions were found for testosterone and testosterone to cortisol ratio (T/C). Both variables were greater in BG at P2 and P3 compared to P1, however, the testosterone was less in the PG at P3 compared to P2. There was no significant group by time interactions for GH, IGF-1, lean body mass, or body fat. There was a significant (p < 0.05) group x time interaction in height and weight at F, with the greater increases in BG compared to PG. Conclusion Betaine supplementation increased testosterone levels and T/C ratio in youth professional soccer players during a competitive season. Betaine supplementation had no negative effects on growth (height and weight) and may attenuate reductions in testosterone due to intense training during puberty.

scholarly journals Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial

2021 ◽  
Author(s):  
Hadi Nobari ◽  
Jason M Cholewa ◽  
Alfonso Castillo-Rodríguez ◽  
Mehdi Kargarfard ◽  
Jorge Pérez-Gómez
Keyword(s):  
Peak Power ◽  
Muscular Strength ◽  
Controlled Trial ◽  
Soccer Players ◽  
Repeated Sprint Ability ◽  
Professional Soccer ◽  
Repeated Sprint ◽  
Competitive Season ◽  
Betaine Supplementation ◽  
Sprint Ability

Abstract Objective Various nutritional strategies are adopted for athletes to maintain and improve performance during the competition season. Betaine may enhance performance during a competitive season by increasing the testosterone to cortisol ratio and reducing systemic inflammation. The aim of this study was to investigate the effect of betaine supplementation on the bio-motor abilities in young soccer players. Methods Twenty-nine professional young soccer players (age, 15.5 ± 0.3 years) were matched by position and randomly assigned to one of two groups for 14 weeks: betaine (BG, 2 g/day; n = 14) or placebo (PG n = 15). Diet was standardized by a nutritionist, and measures of muscular power (countermovement jump: CMJ), change of direction (modified 5-0-5), acceleration (10 m sprint), sprint performance (30 m sprint time: SpT), muscular strength (leg press and bench press 1-RM), repeated sprint ability (running-based anaerobic sprint test: RAST), and aerobic capacity (30 − 15 intermittent fitness test) were assessed in the pre (P1), mid (P2), and post (P3) season over the course of 5 days. All subjects participated in one soccer match and five training sessions per week. Results Significant (p < 0.05) group x time interactions were found for maximal oxygen uptake (VO2max), anaerobic peak power, and muscular strength favoring BG at P2 and P3 compared to P1. There were meaningful (p < 0.05) group x time interactions for CMJ, SpT, and peak power during the RAST that favored the BG. Conclusion 14-week of betaine supplementation increased 1-RM, VO2max, and repeated sprint ability performance in youth professional soccer players. Betaine supplementation seems to be a useful nutritional strategy to improve and maintain performance during a competitive soccer season.

scholarly journals Effects of 14-weeks betaine supplementation on pro-inflammatory cytokines and hematology status in professional youth soccer players during a competition season: a double blind, randomized, placebo-controlled trial

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Hadi Nobari ◽  
Jason M. Cholewa ◽  
Jorge Pérez-Gómez ◽  
Alfonso Castillo-Rodríguez
Keyword(s):  
Inflammatory Cytokines ◽  
Blood Cells ◽  
Well Being ◽  
Soccer Players ◽  
Mean Corpuscular Hemoglobin ◽  
Significant Group ◽  
Youth Soccer ◽  
Tnf Α ◽  
Betaine Supplementation ◽  
Pro Inflammatory Cytokines

Abstract Objective Systemic elevations in pro-inflammatory cytokines are a marker of non-functional over reaching, and betaine has been shown to reduce the secretion of pro-inflammatory cytokines in vitro. The aim of this study was to investigate the effects of betaine supplementation on tumor necrosis factor alpha (TNF-α), interleukins-1 beta (IL-1β), − 6 (IL-6) and the complete blood cell (CBC) count in professional youth soccer players during a competitive season. Methods Twenty-nine soccer players (age, 15.5 ± 0.3 years) were randomly divided into two groups based on playing position: betaine group (BG, n = 14, 2 g/day) or placebo group (PG, n = 15). During the 14-week period, training load was matched and well-being indicators were monitored daily. The aforementioned cytokines and CBC were assessed at pre- (P1), mid- (P2), and post- (P3) season. Results Significant (p < 0.05) group x time interactions were found for TNF-α, IL-1β, and IL-6. These variables were lower in the BG at P2 and P3 compared to P1, while IL-1β was greater in the PG at P3 compared to P1 (p = 0.033). The CBC count analysis showed there was significant group by time interactions for white blood cells (WBC), red blood cells (RBC), hemoglobin (Hb), and mean corpuscular hemoglobin concentration (MCHC). WBC demonstrated increases at P3 compared to P2 in PG (p = 0.034); RBC was less at P3 compared to P1 in BG (p = 0.020); Hb was greater at P2 compared to P1, whilst it was less at P3 compared to P3 for both groups. MCHC was greater at P3 and P2 compared to P1 in BG, whereas MCHC was significantly lower at P3 compared to P2 in the PG (p = 0.003). Conclusion The results confirmed that 14 weeks of betaine supplementation prevented an increase in pro-inflammatory cytokines and WBC counts. It seems that betaine supplementation may be a useful nutritional strategy to regulate the immune response during a fatiguing soccer season.

scholarly journals Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Hadi Nobari ◽  
Jason M Cholewa ◽  
Alfonso Castillo-Rodríguez ◽  
Mehdi Kargarfard ◽  
Jorge Pérez-Gómez
Keyword(s):  
Peak Power ◽  
Muscular Strength ◽  
Soccer Players ◽  
Repeated Sprint Ability ◽  
Young Professional ◽  
Professional Soccer ◽  
Repeated Sprint ◽  
Competitive Season ◽  
Betaine Supplementation ◽  
Sprint Ability

Abstract Objective Various nutritional strategies are adopted for athletes to maintain and to improve performance during the competition season. Betaine may enhance performance during a competitive season by increasing the testosterone to cortisol ratio and reducing systemic inflammation. The aim of this study was to investigate the effect of betaine supplementation on the bio-motor abilities in young professional soccer players. Methods Twenty-nine young professional soccer players (age, 15.5±0.3 years) were matched by position and randomly assigned to one of two groups for 14 weeks: betaine (BG, 2 g/day; n=14) or placebo (PG n=15). Diet was standardized by a nutritionist, and measures of muscular power (countermovement jump: CMJ), change of direction: modified 5-0-5), acceleration (10 m sprint), sprint performance (30 m sprint time: SpT), muscular strength (leg press and bench press one repetition maximum: 1-RM), repeated sprint ability (running-based anaerobic sprint test: RAST), and aerobic capacity (30-15 intermittent fitness test) were assessed in the pre (P1), mid (P2) and post (P3) season over the course of 5 days. All subjects participated in one soccer match and five training sessions per week. Results Significant (p < 0.05) group x time interactions were found for maximal oxygen uptake (VO2max), anaerobic peak power, and muscular strength favoring BG at P2 and P3 compared to P1. There were meaningful (p < 0.05) group x time interactions for CMJ, SpT, and peak power during the RAST that favored the BG. Conclusions 14-week of betaine supplementation increased predicted 1-RM, VO2max, and repeated sprint ability performance in youth professional soccer players. Betaine supplementation seems to be a useful nutritional strategy to improve and to maintain performance during a competitive soccer season.

scholarly journals Effect of Spirulina maxima Supplementation and a Systematic Physical Exercise Program on Body Composition and Cardiorespiratory Fitness of Overweight or Obese Subjects: A Double Blind Randomized, Crossover Controlled Trial

2018 ◽  
Author(s):  
Marco Antonio Hernández-Lepe ◽  
José Alberto López-Díaz ◽  
Marco Antonio Juárez-Oropeza ◽  
Rosa Patricia Hernández-Torres ◽  
Abraham Wall-Medrano ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Physical Exercise ◽  
Cardiorespiratory Fitness ◽  
Controlled Trial ◽  
Exercise Program ◽  
Spirulina Maxima ◽  
Double Blind ◽  
Fitness Parameters ◽  
Obese Subjects

: Background: Overweight and obesity are major risk factors for many chronic diseases, and weight-loss interventions often include systematic exercising and nutritional supplements. The purpose of this study was to determine the independent/synergistic effects of Spirulina maxima supplementation (6-week, 4.5 g/day) and a systematic physical exercise program (6 weeks/ 2 times) on body composition and cardiorespiratory fitness of overweight and obese subjects. Methods: 27 overweight and 25 obese sedentary male subjects were assigned to four interventions through a randomized double-blind, crossover controlled trial: Physical exercise program with (SE) or without (Ex) Spirulina maxima or no-exercise program with (Sm) and without (C) Spirulina maxima. Body composition and cardiorespiratory fitness parameters were taken during a maximal intensity test. Results: As compared to C group, SE, Sm and Ex groups reduced (p &lt; 0.05) their body fat percentage while improving their maximal oxygen uptake (VO2max; r = &minus;0.40), being obese subjects more benefited. Weight loss, time to reach fatigue and onset of blood lactate accumulation were improved in both Spirulina maxima supplemented groups, regardless the subjects&rsquo; body composition. Conclusions: Spirulina maxima supplementation synergistically improves the effects of systematic exercise in body composition and cardiorespiratory fitness parameters in overweight but mostly in obese adults.

scholarly journals Effect of Arthrospira (Spirulina) maxima Supplementation and a Systematic Physical Exercise Program on the Body Composition and Cardiorespiratory Fitness of Overweight or Obese Subjects: A Double-Blind, Randomized, and Crossover Controlled Trial

Marine Drugs ◽  
2018 ◽  
Vol 16 (10) ◽  
pp. 364 ◽  
Author(s):  
Marco Hernández-Lepe ◽  
José López-Díaz ◽  
Marco Juárez-Oropeza ◽  
Rosa Hernández-Torres ◽  
Abraham Wall-Medrano ◽  
...  
Keyword(s):  
Body Composition ◽  
Physical Exercise ◽  
Cardiorespiratory Fitness ◽  
Controlled Trial ◽  
Exercise Program ◽  
The Body ◽  
Spirulina Maxima ◽  
Double Blind ◽  
Fitness Parameters ◽  
Obese Subjects

Excess weight and obesity are major risk factors for many chronic diseases, and weight-loss interventions often include systematic exercise and nutritional supplements. The purpose of this study was to determine the independent/synergistic effects of Arthrospira (Spirulina) maxima supplementation (six weeks, 4.5 g·day−1) and a systematic physical exercise program (six weeks, twice weekly) on the body composition and cardiorespiratory fitness of overweight and obese subjects. To achieve this, 27 overweight and 25 obese sedentary male subjects were assigned to four interventions through a randomized double-blind, crossover controlled trial: A physical exercise program, with (SE) or without (Ex) Spirulina maxima; or no-exercise program, with (Sm) and without (C) Spirulina maxima. The body composition and cardiorespiratory fitness parameters were taken during a maximum intensity test. As compared to the C group, the body fat percentage of the SE, Sm and Ex groups was reduced (p < 0.05), while their maximal oxygen uptake improved (r = −0.40), and obese subjects benefited more significantly. Weight loss, the time to reach fatigue and the onset of blood lactate accumulation were improved in both of the Spirulina maxima supplemented groups, regardless of the subjects’ body weight. Spirulina maxima supplementation synergistically improves the effects of systematic exercise on body composition and cardiorespiratory fitness parameters in overweight, but mostly in individuals with obesity. Trial registration: Clinical Trials, NCT02837666. Registered 19 July 2016.

The Effect of a 20-Week Corrective Exercise Program on Functional Movement Patterns in Youth Elite Male Soccer Players

2019 ◽  
Vol 28 (7) ◽  
pp. 746-751 ◽  
Author(s):  
Francesco Campa ◽  
Federico Spiga ◽  
Stefania Toselli
Keyword(s):  
Exercise Program ◽  
Movement Patterns ◽  
Soccer Players ◽  
Control Group ◽  
Intervention Period ◽  
Chi Square ◽  
Significant Group ◽  
Functional Movement ◽  
Competitive Season ◽  
Chi Square Analysis

Context: Poor functional movement patterns negatively affect the ability to perform fundamental movements with precision and efficiency, increasing injury risk in athletes. Objectives: To examine the effect of a 20-week corrective exercise program during the competitive season on functional movement patterns in youth elite male soccer players. Design: Cohort study. Setting: Team facilities. Participants: Sixty-five youth elite male soccer players (age: 15.89 [0.53] y; weight: 67.42 [6.78] kg; and stature: 175.20 [6.34] cm). Of the 4 teams, 2 were randomly selected to take part in the corrective program. Thus, the players were placed into 2 groups: corrective exercise program and control group. Intervention: Corrective exercise program. Main Outcome Measures: Functional Movement Screen (FMS) was used to assess the presence of dysfunctional, asymmetrical, and painful movements in the players before and after the intervention period. In addition to considering the FMS total score (FMStotal), we separated the screen into 3 parts: FMSmove, FMSflex, and FMSstab. A repeated-measures analysis of variance was conducted to determine the effectiveness of the training program on FMS scores. The chi-square test was performed to determine whether there were significant changes in the frequencies of asymmetric and dysfunctional movements after 20 weeks. Results: No athlete experienced severe injuries during the intervention period. There was a significant group by time interaction (P < .01) for FMStotal, FMSmove, and FMSstab, in which only the corrective exercise program increased their scores after the intervention period (P < .05). A chi-square analysis showed a significant (P < .05) decrease in asymmetric and dysfunctional movements at the follow-up in corrective exercise program, whereas these changes were not observed in the control group. Conclusions: Youth elite soccer players demonstrate a high prevalence of asymmetric movements during FMS testing, but their functional movement patterns can be improved during the competitive season following a specific corrective exercise program.

scholarly journals Does Resisted Sled Towing Improve the Physical Qualities of Elite Youth Soccer Players of Differing Maturity Status?

2021 ◽  
Author(s):  
Rhys Morris ◽  
Tony Myers ◽  
Stacey Emmonds ◽  
Dave Singleton ◽  
Kevin Till
Keyword(s):  
Body Mass ◽  
Bayesian Regression ◽  
Soccer Players ◽  
Height Velocity ◽  
Regression To The Mean ◽  
Peak Height Velocity ◽  
Maturity Group ◽  
Youth Soccer ◽  
Professional Soccer ◽  
The Impact

Abstract Purpose Sled towing has been shown to be an effective method to enhance the physical qualities in youth athletes. The aim of this study was to evaluate the impact of a 6-week sled towing intervention on muscular strength, speed and power in elite youth soccer players of differing maturity status. Method Seventy-three male elite youth soccer players aged 12–18 years (Pre-Peak Height Velocity [PHV] n = 25; Circa-PHV n = 24; Post-PHV n = 24) from one professional soccer academy participated in this study. Sprint assessments (10 m and 30 m), countermovement jump and isometric mid-thigh pull were undertaken before (T1) and after (T2) a 6-week intervention. The training intervention consisted of 6 weeks (2 × per week, 10 sprints over 20 m distance) of resisted sled towing (linear progression 10%–30% of body mass) during the competitive season. Bayesian regression models analysed differences between T1 and T2 within each maturity group. Results There were minimal changes in strength, speed and power (P = 0.35–0.80) for each maturity group across the 6-week intervention. Where there were changes with greater certainty, they are unlikely to represent real effect due to higher regression to the mean (RTM). Conclusion It appears that a 6-week sled towing training programme with loadings of 10%–30% body mass only maintains physical qualities in elite youth soccer players pre-, circa-, and post-PHV. Further research is required to determine the effectiveness of this training method in long-term athletic development programmes.

scholarly journals Impact of Fatty Acid Supplementation on Cognitive Performance among United States (US) Military Officers: The Ranger Resilience and Improved Performance on Phospholipid-Bound Omega-3’s (RRIPP-3) Study

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1854
Author(s):  
Bernadette P. Marriott ◽  
Travis H. Turner ◽  
Joseph R. Hibbeln ◽  
Jill C. Newman ◽  
Marcie Pregulman ◽  
...  
Keyword(s):  
United States ◽  
Controlled Trial ◽  
The United States ◽  
Military Officers ◽  
Krill Oil ◽  
Omega 3 ◽  
Double Blind ◽  
Significant Group ◽  
Intention To Treat ◽  
Improved Performance

Studies have assessed omega-3 fatty acids and cognitive decline among older adults and cognitive development among children, although less is known about cognitive or neurological effects among young adults. We examined whether omega-3 supplementation from krill oil could improve cognition and resilience among young military officers compared to a control. This double-blind, placebo-controlled trial enrolled 555 officers (mean age 23.4 ± 2.8, 98.6% male) entering the United States (US) Army Infantry Basic Officer Leaders Course (IBOLC) with the intention to complete the US Ranger Course. Volunteer participants consumed eight dietary supplements daily of krill oil containing 2.3 g omega-3 or control (macadamia nut oil) over an approximate 20-week period. Cognitive functioning, resilience, and mood were assessed during a well-rested period at approximately 14 weeks and after a battlefield simulation at 16 weeks. Blood spot samples were collected to monitor compliance and dietary intake was assessed. All hypotheses were tested using both ‘Intention to Treat’ (ITT) and ‘As Per Protocol’ (APP) approaches. Of the 555 randomized individuals, 245 (44.1%) completed the study. No statistically significant group-by-time interactions indicating treatment effect were found on any outcomes. Poor compliance was indicated by lower than expected omega-3 elevations in the treatment group, and may have contributed to a failure to detect a response.

Sign in / Sign up

Export Citation Format

Share Document