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Juan Del Coso - One of the best experts on this subject based on the ideXlab platform.

  • enhancing physical performance in male volleyball players with a caffeine containing Energy Drink
    International Journal of Sports Physiology and Performance, 2014
    Co-Authors: Juan Del Coso, Beatriz Lara, Juan Jose Salinero, Javier Abianvicen, Alberto Perezlopez, David Valades
    Abstract:

    There are no scientific data about the effects of caffeine intake on volleyball performance. The aim of this study was to investigate the effect of a caffeine-containing Energy Drink to enhance physical performance in male volleyball players. A double-blind, placebo-controlled, randomized experimental design was used. In 2 different sessions separated by 1 wk, 15 college volleyball players ingested 3 mg of caffeine per kg of body mass in the form of an Energy Drink or the same Drink without caffeine (placebo). After 60 min, participants performed volleyball-specific tests: standing spike test, maximal squat jump (SJ), maximal countermovement jump (CMJ), 15-s rebound jump test (15RJ), and agility T-test. Later, a simulated volleyball match was played and recorded. In comparison with the placebo Drink, the ingestion of the caffeinated Energy Drink increased ball velocity in the spike test (73 ± 9 vs 75 ± 10 km/h, P < .05) and the mean jump height in SJ (31.1 ± 4.3 vs 32.7 ± 4.2 cm, P < .05), CMJ (35.9 ± 4.6 vs 37.7 ± 4.4 cm, P < .05), and 15RJ (29.0 ± 4.0 vs 30.5 ± 4.6 cm, P < .05). The time to complete the agility test was significantly reduced with the caffeinated Energy Drink (10.8 ± 0.7 vs 10.3 ± 0.4 s, P < .05). In addition, players performed successful volleyball actions more frequently (24.6% ± 14.3% vs 34.3% ± 16.5%, P < .05) with the ingestion of the caffeinated Energy Drink than with the placebo Drink during the simulated game. A caffeine-containing Energy Drink, with a dose equivalent to 3 mg of caffeine per kg body mass, might be an effective ergogenic aid to improve physical performance and accuracy in male volleyball players.

  • caffeine containing Energy Drink improves physical performance in female soccer players
    Amino Acids, 2014
    Co-Authors: Beatriz Lara, Cristina Gonzalezmillan, Juan Jose Salinero, Javier Abianvicen, Francisco Areces, Jose Carlos Barberoalvarez, Victor Munoz, Luis J Portillo, Jose Maria Gonzalezrave, Juan Del Coso
    Abstract:

    There is little information about the effects of caffeine intake on female team-sport performance. The aim of this study was to investigate the effectiveness of a caffeine-containing Energy Drink to improve physical performance in female soccer players during a simulated game. A double-blind, placebo controlled and randomized experimental design was used in this investigation. In two different sessions, 18 women soccer players ingested 3 mg of caffeine/kg in the form of an Energy Drink or an identical Drink with no caffeine content (placebo). After 60 min, they performed a countermovement jump (CMJ) and a 7 × 30 m sprint test followed by a simulated soccer match (2 × 40 min). Individual running distance and speed were measured using GPS devices. In comparison to the placebo Drink, the ingestion of the caffeinated Energy Drink increased the CMJ height (26.6 ± 4.0 vs 27.4 ± 3.8 cm; P 18 km/h (161 ± 99 vs 216 ± 103 m; P < 0.05). The ingestion of the Energy Drink did not affect the prevalence of negative side effects after the game. An Energy Drink with a dose equivalent to 3 mg of caffeine/kg might be an effective ergogenic aid to improve physical performance in female soccer players.

  • a caffeinated Energy Drink improves jump performance in adolescent basketball players
    Amino Acids, 2014
    Co-Authors: Javier Abianvicen, Gloria Munoz, Jesus Munozguerra, Cristina Gonzalezmillan, Juan Jose Salinero, Francisco Areces, Carlos Puente, Juan Del Coso
    Abstract:

    This study aimed at investigating the effects of a commercially available Energy Drink on shooting precision, jump performance and endurance capacity in young basketball players. Sixteen young basketball players (first division of a junior national league; 14.9 ± 0.8 years; 73.4 ± 12.4 kg; 182.3 ± 6.5 cm) volunteered to participate in the research. They ingested either (a) an Energy Drink that contained 3 mg of caffeine per kg of body weight or (b) a placebo Energy Drink with the same appearance and taste. After 60 min for caffeine absorption, they performed free throw shooting and three-point shooting tests. After that, participants performed a maximal countermovement jump (CMJ), a repeated maximal jumps test for 15 s (RJ-15), and the Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1). Urine samples were obtained before and 30 min after testing. In comparison to the placebo, the ingestion of the caffeinated Energy Drink did not affect precision during the free throws (Caffeine = 70.7 ± 11.8 % vs placebo = 70.3 ± 11.0 %; P = 0.45), the three-point shooting test (39.9 ± 11.8 vs 38.1 ± 12.8 %; P = 0.33) or the distance covered in the Yo-Yo IR1 (2,000 ± 706 vs 1,925 ± 702 m; P = 0.19). However, the Energy Drink significantly increased jump height during the CMJ (38.3 ± 4.4 vs 37.5 ± 4.4 cm; P < 0.05) mean jump height during the RJ-15 (30.2 ± 3.6 vs 28.8 ± 3.4 cm; P < 0.05) and the excretion of urinary caffeine (1.2 ± 0.7 vs 0.1 ± 0.1 μg/mL; P < 0.05). The intake of a caffeine-containing Energy Drink (3 mg/kg body weight) increased jump performance although it did not affect basketball shooting precision.

  • caffeine containing Energy Drink improves physical performance of elite rugby players during a simulated match
    Applied Physiology Nutrition and Metabolism, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Jose Carlos Barberoalvarez, Victor Munoz, Javier Portillo, Juan A Ramirez, Jesus Munozguerra
    Abstract:

    The purpose of this study was to investigate the effectiveness of a caffeine-containing Energy Drink in enhancing rugby players' physical performance during a simulated match. A second purpose was to determine the urinary caffeine excretion derived from the Energy Drink intake. In a randomized and counterbalanced order, 26 elite rugby players (mean ± SD for age and body mass, 25 ± 2 y and 93 ± 15 kg) played 2 simulated rugby games (2 × 30 min) 60 min after ingesting (i) 3 mg of caffeine per kilogram of body mass in the form of an Energy Drink (Fure, ProEnergetics) or (ii) the same Drink without caffeine (placebo). During the matches, the individual running distance and the instantaneous speed were measured, and the number of running actions above 20 km·h(-1) (i.e., sprints) were determined, using global positioning system devices. The number of impacts above 5 g during the matches was determined by accelerometry. The ingestion of the Energy Drink, compared with the placebo, increased the total distance covered during the match (4749 ± 589 vs 5139 ± 475 m, p < 0.05), the running distance covered at more than 20 km·h(-1) (184 ± 38 vs 208 ± 38 m, p < 0.05), and the number of sprints (10 ± 7 vs 12 ± 7, p < 0.05). The ingestion of the Energy Drink also resulted in a greater overall number of impacts (481 ± 352 vs 641 ± 366, p < 0.05) and a higher postexercise urine caffeine concentration (0.1 ± 0.1 vs 2.4 ± 0.9 μg·mL(-1), p < 0.05). The use of an Energy Drink with a caffeine dose equivalent to 3 mg·kg(-1) considerably enhanced the movement patterns of rugby players during a simulated match.

  • caffeine containing Energy Drink improves sprint performance during an international rugby sevens competition
    Amino Acids, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Javier Abianvicen, Javier Portillo, Jesus Munozguerra
    Abstract:

    The aim of this study was to determine the effects of a caffeine-containing Energy Drink on physical performance during a rugby sevens competition. A second purpose was to investigate the post-competition urinary caffeine concentration derived from the Energy Drink intake. On two non-consecutive days of a friendly tournament, 16 women from the Spanish National rugby sevens Team (mean age and body mass = 23 ± 2 years and 66 ± 7 kg) ingested 3 mg of caffeine per kg of body mass in the form of an Energy Drink (Fure®, ProEnergetics) or the same Drink without caffeine (placebo). After 60 min for caffeine absorption, participants performed a 15-s maximal jump test, a 6 × 30 m sprint test, and then played three rugby sevens games against another national team. Individual running pace and instantaneous speed during the games were assessed using global positioning satellite (GPS) devices. Urine samples were obtained pre and post-competition. In comparison to the placebo, the ingestion of the Energy Drink increased muscle power output during the jump series (23.5 ± 10.1 vs. 25.6 ± 11.8 kW, P = 0.05), running pace during the games (87.5 ± 8.3 vs. 95.4 ± 12.7 m/min, P < 0.05), and pace at sprint velocity (4.6 ± 3.3 vs. 6.1 ± 3.4 m/min, P < 0.05). However, the Energy Drink did not affect maximal running speed during the repeated sprint test (25.0 ± 1.5 vs. 25.0 ± 1.7 km/h). The ingestion of the Energy Drink resulted in a higher post-competition urine caffeine concentration than the placebo (3.3 ± 0.7 vs. 0.2 ± 0.1 μg/mL; P < 0.05). In summary, 3 mg/kg of caffeine in the form of a commercially available Energy Drink considerably enhanced physical performance during a women’s rugby sevens competition.

Jesus Munozguerra - One of the best experts on this subject based on the ideXlab platform.

  • a caffeinated Energy Drink improves jump performance in adolescent basketball players
    Amino Acids, 2014
    Co-Authors: Javier Abianvicen, Gloria Munoz, Jesus Munozguerra, Cristina Gonzalezmillan, Juan Jose Salinero, Francisco Areces, Carlos Puente, Juan Del Coso
    Abstract:

    This study aimed at investigating the effects of a commercially available Energy Drink on shooting precision, jump performance and endurance capacity in young basketball players. Sixteen young basketball players (first division of a junior national league; 14.9 ± 0.8 years; 73.4 ± 12.4 kg; 182.3 ± 6.5 cm) volunteered to participate in the research. They ingested either (a) an Energy Drink that contained 3 mg of caffeine per kg of body weight or (b) a placebo Energy Drink with the same appearance and taste. After 60 min for caffeine absorption, they performed free throw shooting and three-point shooting tests. After that, participants performed a maximal countermovement jump (CMJ), a repeated maximal jumps test for 15 s (RJ-15), and the Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1). Urine samples were obtained before and 30 min after testing. In comparison to the placebo, the ingestion of the caffeinated Energy Drink did not affect precision during the free throws (Caffeine = 70.7 ± 11.8 % vs placebo = 70.3 ± 11.0 %; P = 0.45), the three-point shooting test (39.9 ± 11.8 vs 38.1 ± 12.8 %; P = 0.33) or the distance covered in the Yo-Yo IR1 (2,000 ± 706 vs 1,925 ± 702 m; P = 0.19). However, the Energy Drink significantly increased jump height during the CMJ (38.3 ± 4.4 vs 37.5 ± 4.4 cm; P < 0.05) mean jump height during the RJ-15 (30.2 ± 3.6 vs 28.8 ± 3.4 cm; P < 0.05) and the excretion of urinary caffeine (1.2 ± 0.7 vs 0.1 ± 0.1 μg/mL; P < 0.05). The intake of a caffeine-containing Energy Drink (3 mg/kg body weight) increased jump performance although it did not affect basketball shooting precision.

  • caffeine containing Energy Drink improves physical performance of elite rugby players during a simulated match
    Applied Physiology Nutrition and Metabolism, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Jose Carlos Barberoalvarez, Victor Munoz, Javier Portillo, Juan A Ramirez, Jesus Munozguerra
    Abstract:

    The purpose of this study was to investigate the effectiveness of a caffeine-containing Energy Drink in enhancing rugby players' physical performance during a simulated match. A second purpose was to determine the urinary caffeine excretion derived from the Energy Drink intake. In a randomized and counterbalanced order, 26 elite rugby players (mean ± SD for age and body mass, 25 ± 2 y and 93 ± 15 kg) played 2 simulated rugby games (2 × 30 min) 60 min after ingesting (i) 3 mg of caffeine per kilogram of body mass in the form of an Energy Drink (Fure, ProEnergetics) or (ii) the same Drink without caffeine (placebo). During the matches, the individual running distance and the instantaneous speed were measured, and the number of running actions above 20 km·h(-1) (i.e., sprints) were determined, using global positioning system devices. The number of impacts above 5 g during the matches was determined by accelerometry. The ingestion of the Energy Drink, compared with the placebo, increased the total distance covered during the match (4749 ± 589 vs 5139 ± 475 m, p < 0.05), the running distance covered at more than 20 km·h(-1) (184 ± 38 vs 208 ± 38 m, p < 0.05), and the number of sprints (10 ± 7 vs 12 ± 7, p < 0.05). The ingestion of the Energy Drink also resulted in a greater overall number of impacts (481 ± 352 vs 641 ± 366, p < 0.05) and a higher postexercise urine caffeine concentration (0.1 ± 0.1 vs 2.4 ± 0.9 μg·mL(-1), p < 0.05). The use of an Energy Drink with a caffeine dose equivalent to 3 mg·kg(-1) considerably enhanced the movement patterns of rugby players during a simulated match.

  • caffeine containing Energy Drink improves sprint performance during an international rugby sevens competition
    Amino Acids, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Javier Abianvicen, Javier Portillo, Jesus Munozguerra
    Abstract:

    The aim of this study was to determine the effects of a caffeine-containing Energy Drink on physical performance during a rugby sevens competition. A second purpose was to investigate the post-competition urinary caffeine concentration derived from the Energy Drink intake. On two non-consecutive days of a friendly tournament, 16 women from the Spanish National rugby sevens Team (mean age and body mass = 23 ± 2 years and 66 ± 7 kg) ingested 3 mg of caffeine per kg of body mass in the form of an Energy Drink (Fure®, ProEnergetics) or the same Drink without caffeine (placebo). After 60 min for caffeine absorption, participants performed a 15-s maximal jump test, a 6 × 30 m sprint test, and then played three rugby sevens games against another national team. Individual running pace and instantaneous speed during the games were assessed using global positioning satellite (GPS) devices. Urine samples were obtained pre and post-competition. In comparison to the placebo, the ingestion of the Energy Drink increased muscle power output during the jump series (23.5 ± 10.1 vs. 25.6 ± 11.8 kW, P = 0.05), running pace during the games (87.5 ± 8.3 vs. 95.4 ± 12.7 m/min, P < 0.05), and pace at sprint velocity (4.6 ± 3.3 vs. 6.1 ± 3.4 m/min, P < 0.05). However, the Energy Drink did not affect maximal running speed during the repeated sprint test (25.0 ± 1.5 vs. 25.0 ± 1.7 km/h). The ingestion of the Energy Drink resulted in a higher post-competition urine caffeine concentration than the placebo (3.3 ± 0.7 vs. 0.2 ± 0.1 μg/mL; P < 0.05). In summary, 3 mg/kg of caffeine in the form of a commercially available Energy Drink considerably enhanced physical performance during a women’s rugby sevens competition.

  • effects of a caffeine containing Energy Drink on simulated soccer performance
    PLOS ONE, 2012
    Co-Authors: Juan Del Coso, Victor E Munozfernandez, Gloria Munoz, Valentin E Fernandezelias, Juan F Ortega, Nassim Hamouti, Jose Carlos Barbero, Jesus Munozguerra
    Abstract:

    Background To investigate the effects of a caffeine-containing Energy Drink on soccer performance during a simulated game. A second purpose was to assess the post-exercise urine caffeine concentration derived from the Energy Drink intake. Methodology/Principal Findings Nineteen semiprofessional soccer players ingested 630±52 mL of a commercially available Energy Drink (sugar-free Red Bull®) to provide 3 mg of caffeine per kg of body mass, or a decaffeinated control Drink (0 mg/kg). After sixty minutes they performed a 15-s maximal jump test, a repeated sprint test (7×30 m; 30 s of active recovery) and played a simulated soccer game. Individual running distance and speed during the game were measured using global positioning satellite (GPS) devices. In comparison to the control Drink, the ingestion of the Energy Drink increased mean jump height in the jump test (34.7±4.7 v 35.8±5.5 cm; P<0.05), mean running speed during the sprint test (25.6±2.1 v 26.3±1.8 km · h−1; P<0.05) and total distance covered at a speed higher than 13 km · h−1 during the game (1205±289 v 1436±326 m; P<0.05). In addition, the Energy Drink increased the number of sprints during the whole game (30±10 v 24±8; P<0.05). Post-exercise urine caffeine concentration was higher after the Energy Drink than after the control Drink (4.1±1.0 v 0.1±0.1 µg · mL−1; P<0.05). Conclusions/significance A caffeine-containing Energy Drink in a dose equivalent to 3 mg/kg increased the ability to repeatedly sprint and the distance covered at high intensity during a simulated soccer game. In addition, the caffeinated Energy Drink increased jump height which may represent a meaningful improvement for headers or when players are competing for a ball.

Joris C Verster - One of the best experts on this subject based on the ideXlab platform.

  • alcohol mixed with Energy Drink amed a critical review and meta analysis
    Human Psychopharmacology-clinical and Experimental, 2018
    Co-Authors: Joris C Verster, Chris Alford, Sarah Benson, Sean J Johnson, Samuel Benrejeb Godefroy, Andrew Scholey
    Abstract:

    The purpose of this systematic review and meta-analysis was to critically review the (1) prevalence of alcohol mixed with Energy Drink (AMED) consumption, (2) motives for AMED consumption, (3) correlates of AMED consumption, and (4) whether AMED consumption has an impact on (a) alcohol consumption, (b) subjective intoxication, and (c) risk-taking behavior. Overall a minority of the population consumes AMED, typically infrequently. Motives for AMED consumption are predominantly hedonistic and social. Meta-analyses revealed that AMED consumers Drink significantly more alcohol than alcohol-only (AO) consumers. Within-subject comparisons restricted to AMED consumers revealed that alcohol consumption does not significantly differ between typical AMED and AO occasions. On past month heaviest Drinking occasions, AMED users consume significantly less alcohol on AMED occasions when compared to AO occasions. AMED consumers experience significantly fewer negative consequences and risk-taking behavior on AMED occasions compared with AO occasions. Meta-analyses of subjective intoxication studies suggest that AMED consumption does not differentially affect subjective intoxication when compared to AO consumption. In conclusion, when compared to AO consumption, mixing alcohol with Energy Drink does not affect subjective intoxication and seems unlikely to increase total alcohol consumption, associated risk-taking behavior, nor other negative alcohol-related consequences. Further research may be necessary to fully reveal the effects of AMED.

  • effects of mixing alcohol with Energy Drink on objective and subjective intoxication results from a dutch on premise study
    Psychopharmacology, 2015
    Co-Authors: J M E Benjaminsen, Joris C Verster, J H M Van Lanen, N M D Van Stavel, Berend Olivier
    Abstract:

    Background The purpose of this on-premise study was to determine if alcohol mixed with Energy Drink (AMED) consumption masks the subjective feelings of intoxication when compared to consuming alcohol only.

  • the effects of Energy Drink in combination with alcohol on performance and subjective awareness
    Psychopharmacology, 2012
    Co-Authors: Chris Alford, Jennifer Hamiltonmorris, Joris C Verster
    Abstract:

    Rationale This study investigated the coadministration of an Energy Drink with alcohol to study the effects on subjective intoxication and objective performance.

  • positive effects of red bull Energy Drink on driving performance during prolonged driving
    Psychopharmacology, 2011
    Co-Authors: Monique Anna Johanna Mets, Sander Ketzer, Camilla Blom, Maartje H Van Gerven, Gitta M Van Willigenburg, Berend Olivier, Joris C Verster
    Abstract:

    Background The purpose of this study was to examine if Red Bull® Energy Drink can counteract sleepiness and driving impairment during prolonged driving.

Cristina Gonzalezmillan - One of the best experts on this subject based on the ideXlab platform.

  • caffeine containing Energy Drink improves physical performance in female soccer players
    Amino Acids, 2014
    Co-Authors: Beatriz Lara, Cristina Gonzalezmillan, Juan Jose Salinero, Javier Abianvicen, Francisco Areces, Jose Carlos Barberoalvarez, Victor Munoz, Luis J Portillo, Jose Maria Gonzalezrave, Juan Del Coso
    Abstract:

    There is little information about the effects of caffeine intake on female team-sport performance. The aim of this study was to investigate the effectiveness of a caffeine-containing Energy Drink to improve physical performance in female soccer players during a simulated game. A double-blind, placebo controlled and randomized experimental design was used in this investigation. In two different sessions, 18 women soccer players ingested 3 mg of caffeine/kg in the form of an Energy Drink or an identical Drink with no caffeine content (placebo). After 60 min, they performed a countermovement jump (CMJ) and a 7 × 30 m sprint test followed by a simulated soccer match (2 × 40 min). Individual running distance and speed were measured using GPS devices. In comparison to the placebo Drink, the ingestion of the caffeinated Energy Drink increased the CMJ height (26.6 ± 4.0 vs 27.4 ± 3.8 cm; P 18 km/h (161 ± 99 vs 216 ± 103 m; P < 0.05). The ingestion of the Energy Drink did not affect the prevalence of negative side effects after the game. An Energy Drink with a dose equivalent to 3 mg of caffeine/kg might be an effective ergogenic aid to improve physical performance in female soccer players.

  • a caffeinated Energy Drink improves jump performance in adolescent basketball players
    Amino Acids, 2014
    Co-Authors: Javier Abianvicen, Gloria Munoz, Jesus Munozguerra, Cristina Gonzalezmillan, Juan Jose Salinero, Francisco Areces, Carlos Puente, Juan Del Coso
    Abstract:

    This study aimed at investigating the effects of a commercially available Energy Drink on shooting precision, jump performance and endurance capacity in young basketball players. Sixteen young basketball players (first division of a junior national league; 14.9 ± 0.8 years; 73.4 ± 12.4 kg; 182.3 ± 6.5 cm) volunteered to participate in the research. They ingested either (a) an Energy Drink that contained 3 mg of caffeine per kg of body weight or (b) a placebo Energy Drink with the same appearance and taste. After 60 min for caffeine absorption, they performed free throw shooting and three-point shooting tests. After that, participants performed a maximal countermovement jump (CMJ), a repeated maximal jumps test for 15 s (RJ-15), and the Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1). Urine samples were obtained before and 30 min after testing. In comparison to the placebo, the ingestion of the caffeinated Energy Drink did not affect precision during the free throws (Caffeine = 70.7 ± 11.8 % vs placebo = 70.3 ± 11.0 %; P = 0.45), the three-point shooting test (39.9 ± 11.8 vs 38.1 ± 12.8 %; P = 0.33) or the distance covered in the Yo-Yo IR1 (2,000 ± 706 vs 1,925 ± 702 m; P = 0.19). However, the Energy Drink significantly increased jump height during the CMJ (38.3 ± 4.4 vs 37.5 ± 4.4 cm; P < 0.05) mean jump height during the RJ-15 (30.2 ± 3.6 vs 28.8 ± 3.4 cm; P < 0.05) and the excretion of urinary caffeine (1.2 ± 0.7 vs 0.1 ± 0.1 μg/mL; P < 0.05). The intake of a caffeine-containing Energy Drink (3 mg/kg body weight) increased jump performance although it did not affect basketball shooting precision.

  • caffeine containing Energy Drink improves physical performance of elite rugby players during a simulated match
    Applied Physiology Nutrition and Metabolism, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Jose Carlos Barberoalvarez, Victor Munoz, Javier Portillo, Juan A Ramirez, Jesus Munozguerra
    Abstract:

    The purpose of this study was to investigate the effectiveness of a caffeine-containing Energy Drink in enhancing rugby players' physical performance during a simulated match. A second purpose was to determine the urinary caffeine excretion derived from the Energy Drink intake. In a randomized and counterbalanced order, 26 elite rugby players (mean ± SD for age and body mass, 25 ± 2 y and 93 ± 15 kg) played 2 simulated rugby games (2 × 30 min) 60 min after ingesting (i) 3 mg of caffeine per kilogram of body mass in the form of an Energy Drink (Fure, ProEnergetics) or (ii) the same Drink without caffeine (placebo). During the matches, the individual running distance and the instantaneous speed were measured, and the number of running actions above 20 km·h(-1) (i.e., sprints) were determined, using global positioning system devices. The number of impacts above 5 g during the matches was determined by accelerometry. The ingestion of the Energy Drink, compared with the placebo, increased the total distance covered during the match (4749 ± 589 vs 5139 ± 475 m, p < 0.05), the running distance covered at more than 20 km·h(-1) (184 ± 38 vs 208 ± 38 m, p < 0.05), and the number of sprints (10 ± 7 vs 12 ± 7, p < 0.05). The ingestion of the Energy Drink also resulted in a greater overall number of impacts (481 ± 352 vs 641 ± 366, p < 0.05) and a higher postexercise urine caffeine concentration (0.1 ± 0.1 vs 2.4 ± 0.9 μg·mL(-1), p < 0.05). The use of an Energy Drink with a caffeine dose equivalent to 3 mg·kg(-1) considerably enhanced the movement patterns of rugby players during a simulated match.

  • caffeine containing Energy Drink improves sprint performance during an international rugby sevens competition
    Amino Acids, 2013
    Co-Authors: Juan Del Coso, Gloria Munoz, Cristina Gonzalezmillan, Javier Abianvicen, Javier Portillo, Jesus Munozguerra
    Abstract:

    The aim of this study was to determine the effects of a caffeine-containing Energy Drink on physical performance during a rugby sevens competition. A second purpose was to investigate the post-competition urinary caffeine concentration derived from the Energy Drink intake. On two non-consecutive days of a friendly tournament, 16 women from the Spanish National rugby sevens Team (mean age and body mass = 23 ± 2 years and 66 ± 7 kg) ingested 3 mg of caffeine per kg of body mass in the form of an Energy Drink (Fure®, ProEnergetics) or the same Drink without caffeine (placebo). After 60 min for caffeine absorption, participants performed a 15-s maximal jump test, a 6 × 30 m sprint test, and then played three rugby sevens games against another national team. Individual running pace and instantaneous speed during the games were assessed using global positioning satellite (GPS) devices. Urine samples were obtained pre and post-competition. In comparison to the placebo, the ingestion of the Energy Drink increased muscle power output during the jump series (23.5 ± 10.1 vs. 25.6 ± 11.8 kW, P = 0.05), running pace during the games (87.5 ± 8.3 vs. 95.4 ± 12.7 m/min, P < 0.05), and pace at sprint velocity (4.6 ± 3.3 vs. 6.1 ± 3.4 m/min, P < 0.05). However, the Energy Drink did not affect maximal running speed during the repeated sprint test (25.0 ± 1.5 vs. 25.0 ± 1.7 km/h). The ingestion of the Energy Drink resulted in a higher post-competition urine caffeine concentration than the placebo (3.3 ± 0.7 vs. 0.2 ± 0.1 μg/mL; P < 0.05). In summary, 3 mg/kg of caffeine in the form of a commercially available Energy Drink considerably enhanced physical performance during a women’s rugby sevens competition.

  • dose response effects of a caffeine containing Energy Drink on muscle performance a repeated measures design
    Journal of The International Society of Sports Nutrition, 2012
    Co-Authors: Juan Del Coso, Cristina Gonzalezmillan, Juan Jose Salinero, Javier Abianvicen, Benito Perezgonzalez
    Abstract:

    Energy Drinks have become the most used caffeine-containing beverages in the sport setting. The aim of this study was to determine the effects of two doses of a caffeine-containing Energy Drink on muscle performance during upper- and lower-body power-load tests. In a randomized order, twelve active participants ingested 1 and 3 mg of caffeine per kg of body weight using a commercially available Energy Drink (Fure®, ProEnergetics) or the same Drink without caffeine (placebo; 0 mg/kg). After sixty minutes, resting metabolic rate, heart rate and blood pressure were determined. Then, half-squat and bench-press power production with loads from 10 to 100% of 1 repetition maximum was determined using a rotator encoder. In comparison to the placebo, the ingestion of the caffeinated Drink increased mean arterial pressure (82 ± 7 < 88 ± 8 ≈ 90 ± 6 mmHg for 0 mg/kg, 1 mg/kg, 3 mg/kg of caffeine, respectively; P < 0.05) and heart rate (57 ± 7 < 59 ± 8 < 62 ± 8 beats/min, respectively; P < 0.05) at rest in a dose response manner, though it did not affect resting metabolic rate. While the ingestion of 1 mg/kg of caffeine did not affect maximal power during the power-load tests with respect to the placebo, 3 mg/kg increased maximal power in the half-squat (2554 ± 167 ≈ 2549 ± 161 < 2726 ± 167 W, respectively; P < 0.05) and bench-press actions (349 ± 34 ≈ 358 ± 35 < 375 ± 33 W, respectively; P < 0.05). A caffeine dose of at least 3 mg/kg in the form of an Energy Drink is necessary to significantly improve half-squat and bench-press maximal muscle power.

Jeanphilippe Chaput - One of the best experts on this subject based on the ideXlab platform.

  • Energy Drink consumption psychological distress and suicidality among middle and high school students
    Journal of Affective Disorders, 2020
    Co-Authors: Lydie Masengo, Hugues Sampasakanyinga, Hayley Hamilton, Jeanphilippe Chaput, Ian Colman
    Abstract:

    Abstract Background Previous research has found links between Energy Drink consumption and mental health outcomes in youth. However, little is known about the factors that could moderate these relationships. The present study examined the associations between Energy Drink consumption and psychological distress, suicidal thoughts, and suicide attempts among adolescents, and tested whether sex and school type (i.e. middle vs. high school) would moderate these associations. Methods Data on students in grades 7 through 12 was obtained from the 2017 Ontario Student Drug Use and Health Survey (N  =  5,538). Multivariable Poisson regression analyses were used to examine associations between Energy Drink consumption and mental health outcomes. Analyses were weighted and adjusted for the complex survey design. Results Energy Drink consumption was associated with greater risk of moderate to serious (adjusted incidence rate ratio (IRR) 1.19, 95% confidence interval (CI) 1.03–1.37) and serious (IRR: 1.45, 95% CI: 1.13–1.86) levels of psychological distress, suicidal thoughts (IRR: 1.98, 95% CI: 1.62–2.42), and suicide attempts (IRR: 3.67, 95% CI: 2.26–5.95). The association between Energy Drink consumption and mental health outcomes was much stronger among boys and middle school students. Limitations The cross-sectional nature of the data precludes causal inferences and there is possibility of bias related to self-reports. Conclusions Energy Drink consumption among adolescents is strongly and differentially associated with mental health problems among male and female middle and high school students. Future research is necessary to replicate and disentangle the observed differences in more detail to inform the development of tailored interventions.

  • Energy Drink consumption and substance use among middle and high school students
    International Journal of Environmental Research and Public Health, 2020
    Co-Authors: Hugues Sampasakanyinga, Lydie Masengo, Hayley Hamilton, Jeanphilippe Chaput
    Abstract:

    This study examined the association between Energy Drink consumption and substance use among adolescents and tested whether sex and/or grade level (i.e., middle vs. high school) moderate the association. Data were derived from the 2017 Ontario Student Drug Use and Health Survey, a representative survey of students in 7th to 12th grade. Analyses included 10,662 students who self-reported information on Energy Drink consumption and substance use. Poisson regression models were used with adjustments for important covariates. Energy Drink consumption was associated with tobacco cigarette smoking (incidence rate ratio (IRR): 3.74; 95% confidence interval (CI): 3.22-4.35), cannabis use (IRR: 2.90; 95% CI: 2.53-3.32), binge Drinking (IRR: 2.46; 95% CI: 2.05-2.96), opioid use (IRR: 2.23; 95% CI: 1.85-2.68), and alcohol use (IRR: 1.31; 95% CI: 1.26-1.36). The associations of Energy Drink consumption with tobacco cigarette smoking, cannabis use, and alcohol consumption were modified by grade level (two-way interaction terms p < 0.05). The association between Energy Drink consumption and substance use was generally much stronger among middle school students compared with high school students. The findings suggest that middle school students may be more vulnerable to the negative effects of Energy Drinks in relation with substance use.