Ingen ergogen effekt av Red Bull vid högintensiv träning

[King Grub]

Consuming sugar-free Red Bull energy drink before exercise has become increasingly popular among exercising individuals. The main purported active ingredient in sugar-free Red Bull is caffeine, which has been shown to increase aerobic exercise performance. The purpose of this study was to determine the effects of sugar-free Red Bull energy drink on high-intensity run time-to-exhaustion in young adults. Physically active university students (n = 17, 9 men, 8 woman; 21 +/- 4 years, 73.4 +/- 3.1 kg, 175.1 +/- 3.2 cm) participated in a double-blind, crossover, repeated-measures study where they were randomized to supplement with sugar-free Red Bull (2 mg.kg body mass caffeine or ~147 mg caffeine; 4 kcal/250 mL) and noncaffeinated, sugar-free placebo (lemon-lime flavored soft drink, tonic water, lime juice; 4 kcal/250 mL) separated by 7 days. Exercise capacity was assessed by a run time-to-exhaustion test at 80% &OV0312;o2max, perceived exertion was assessed immediately after exercise, and blood lactate was measured before and after exercise. There were no differences in run time-to-exhaustion (Red Bull: 12.6 +/- 3.8 minutes, placebo: 11.8 +/- 3.4 minutes), perceived exertion (Red Bull: 17.1 +/- 2.0, placebo: 16.6 +/- 1.8), or blood lactate between groups. In conclusion, sugar-free Red Bull energy drink did not influence high-intensity run time-to-exhaustion in young adults.

J Strength Cond Res. 2009 Jun 12. Effect of Sugar-Free Red Bull Energy Drink on High-Intensity Run Time-to-Exhaustion in Young Adults.

http://www.nsca-jscr.org/pt/re/jscr/pdfhandler.00124278-900000000-99668.pdf;jsessionid=K41Lq2pg2gT6jm7DD2VrJPnTVdgJL G2YqDn7N9ynkHJMTkLxz78j!-514211921!181195628!8091!-1

[King Grub]

Energy drinks are frequently consumed by athletes prior to competition to improve performance. This study examined the effect of Red Bull™ on repeated sprint performance in women athletes. Fifteen collegiate soccer players participated, with mean age, height, and body mass equal to 19.5 ± 1.1 year, 168.4 ± 5.8 cm, and 63.4 ± 6.1 kg, respectively. After performing a familiarization trial, subjects performed three sets of eight bouts of the modified t test after ingestion of 255 mL of placebo or Red Bull 1 h pre-exercise in a randomized, placebo-controlled crossover design. Throughout testing, sprint time, heart rate (HR), and rating of perceived exertion (RPE) were continuously obtained. Repeated measures analysis of variance was used to examine differences in variables between drink conditions. Across athletes, t test time ranged from 10.4 to 12.7 s. Mean sprint time was similar (p > 0.05) between Red Bull (11.31 ± 0.61 s) and placebo (11.35 ± 0.61 s). HR and RPE increased (p < 0.05) during the bouts, but there was no effect (p > 0.05) of Red Bull on either variable versus placebo. Findings indicate that 255 mL of Red Bull containing 1.3 mg/kg of caffeine and 1 g of taurine does not alter repeated sprint performance, RPE, or HR in women athletes versus placebo. One serving of this energy drink provides no ergogenic benefit for women athletes engaging in sprint-based exercise.

Amino Acids. 2011 Apr 3. Effects of red bull energy drink on repeated sprint performance in women athletes.

[hejhopp79]

Hm jag har då märkt att jag inte får mjölksyra lika lätt när jag tagit taurin i samband med konditionsträning. Skillnaden är väldigt påtaglig t ex vid intervaller

Koffein var det ju inte så mycket i dryckerna hur som helst.

[Zorgus]

Mjo..det var nog för lite koffein för att ge nån effekt.

[Eddie Vedder]

Letade upp några fler undersökningar av Red Bull:

The purpose of this study was to determine the effects of Red Bull energy drink on Wingate cycle performance and muscle endurance. Healthy young adults (N = 15, 11 men, 4 women, 21 +/- 5 y old) participated in a crossover study in which they were randomized to supplement with Red Bull (2 mg/kg body mass of caffeine) or isoenergetic, isovolumetric, noncaffeinated placebo, separated by 7 d. Muscle endurance (bench press) was assessed by the maximum number of repetitions over 3 sets (separated by 1-min rest intervals) at an intensity corresponding to 70% of baseline 1-repetition maximum. Three 30-s Wingate cycling tests (load = 0.075 kp/kg body mass), with 2 min recovery between tests, were used to assess peak and average power output. Red Bull energy drink significantly increased total bench-press repetitions over 3 sets (Red Bull = 34 +/- 9 vs. placebo = 32 +/- 8, P %%%lt; 0.05) but had no effect on Wingate peak or average power (Red Bull = 701 +/- 124 W vs. placebo = 700 +/- 132 W, Red Bull = 479 +/- 74 W vs. placebo = 471 +/- 74 W, respectively). Red Bull energy drink significantly increased upper body muscle endurance but had no effect on anaerobic peak or average power during repeated Wingate cycling tests in young healthy adults.

Forbes SC et al. Effect of Red Bull energy drink on repeated Wingate cycle performance and bench-press muscle endurance. Int J Sport Nutr Exerc Metab. 2007 Oct;17(5):433-44.

The effects of Red Bull Energy Drink, which includes taurine, glucuronolactone, and caffeine amongst the ingredients, were examined over 3 studies in a total of 36 volunteers. Assessments included psychomotor performance (reaction time, concentration, memory), subjective alertness and physical endurance. When compared with control drinks, Red Bull Energy Drink significantly (P < 0.05) improved aerobic endurance (maintaining 65-75% max. heart rate) and anaerobic performance (maintaining max. speed) on cycle ergometers. Significant improvements in mental performance included choice reaction time, concentration (number cancellation) and memory (immediate recall), which reflected increased subjective alertness. These consistent and wide ranging improvements in performance are interpreted as reflecting the effects of the combination of ingredients.

Alford C et al. The effects of red bull energy drink on human performance and mood. Amino Acids. 2001;21(2):139-50.

I ovanstående där resultaten var "bra" för red Bull var det jättelåga deltagarantal i alla tre studier men framför allt var kontrolldrinken kalorifri. Wtf!? :D Snacka om nollresultat. :D

Purpose: Sports drinks that contain taurine and caffeine help boost the body’s physical output and mental state during exercise. There are a variety of options on the market today. The purpose of this study was to take one specific energy drink- Red Bull- and see what, if any, effects it may have on anaerobic performance. Methods: To test whether Red Bull or the placebo affected performance we used a double-blind, random-assignment study. Our subjects were recreationally active, college-aged students who were not addicted to caffeine. The mean age of our subjects was 21.3 ± 1.4 yrs. The average height was 173.1 ± 8.5 cm. The mean weight for the subjects in our study was 71.6 ± 12.0 lbs. The subjects were given either Red Bull or a placebo drink 15 min. before they were to complete their 30-s. Wingate test. After an adequate warm-up, they completed the Wingate test in silence to negate other ergogenic aids. Results: The data collected showed that Red Bull made a statistically insignificant difference in the anaerobic performance of the subjects. This is proven by our statistics, which showed that peak power relative to weight with the consumption of Red Bull was 9.5 ± 1.4 w/kg in comparison to the placebo which was 9.2 ± 1.4 w/kg. Conclusion: Based on the evidence obtained from this study, the effect of Red Bull on the performance of athletes before they performed an anaerobic test or exercises was insignificant. The caffeine and taurine did not enhance the performances as the product claims; therefore, it is not worth the two dollar cost of the beverage for people who are looking to increase their performance.

Mueller EL et al. Effects of Red Bull on Wingate Testing of College Aged Students. Journal of Undergraduate Kinesiology Research 2007;2(2):12-18.

Purpose: Red Bull is one of the many energy drink choices available to consumers and is utilized in an effort to enhance physical performance. Caffeine, one of Red Bull’s main ingredients, is a nervous system stimulant that is thought to provide numerous exercise-enhancing effects including: increased neuromuscular transmission and functioning, improved cardiovascular endurance, and an enhanced ability to achieve peak skeletal muscle strength. Theoretically, the consumption of this product should increase physical performance. Therefore, the purpose of this study was to examine the effects of Red Bull on performance attributes of speed, vertical jump, strength, and anaerobic power in moderately active, college aged individuals. Methods: We tested 15 moderately active, college aged subjects (8 males and 7 females) between the ages of 18 to 22 years. Our study was randomized and double-blinded to ensure both subjects and test administrators would not know whether the subject consumed a Red Bull energy drink or a placebo prior to the testing procedure. We required all participants to attend a familiarization session prior to actual testing sessions to negate experience as a limitation. The testing process measured speed, vertical jump, strength, and anaerobic power via a 40 yard dash, vertical jump test, one repetition maximum (1-RM) bench press, and Wingate test, respectively. Results: There was a significant difference (p < 0.05) in average 40 yard dash speed following Red Bull (M=5.681s ± 0.669s) vs. placebo consumption (M=5.729s ± 0.695s). No other performance measures showed any statistical significance. Conclusion: With the exception of average speed, our study demonstrates that Red Bull does not enhance physical performance. Consequently, it does not seem worth the two dollar cost of the drink for those looking to increase physical performance.

Kaczrowski KL et al. Red Bull Improves Sport Performance: Fact or Fiction? Journal of Undergraduate Kinesiology Research 2007; 3(1) 18-26.

Ganska hårda slutsatser i de där två. :D Men frågan är ju vad det är för tidskrift, ingen jag känner igen och inte hittade jag studierna i Pubmed. Blev lite inspirerad för bloggtext faktiskt.

[mikeni]

Blev lite inspirerad för bloggtext faktiskt.

Do it! :cool:

[Eddie Vedder]

Do it! :cool:

Done! :)

http://traningslara.se/red-bull-och-prestationsformaga-hur-ar-det-egentligen/

[hejhopp79]

"undergraduate" research.

[Morty]

Bump.

Jag upplever inte att jag lyfter direkt mer när jag dricker energidrycker. Däremot så vilar jag spontant mindre mellan seten, utan att behöva minska vikterna (sannolikt skulle jag inte behöva det utan red bull heller...). Vilket i sig betyder en bättre träningseffekt.

[King Grub]

Consumption of energy drinks by both recreational and competitive athletes has increased dramatically in recent years. The primary ingredients in many energy drinks include caffeine (CAF) in various forms, as well as taurine. The purpose of this randomized, double-blind, crossover study was to examine the effect of sugar-free (SF) Red Bull (RB) containing CAF and taurine to a CAF only drink and a SF, CAF-free placebo (PL) on one repetition maximum (1RM) bench press (BP) and the volume load (VL; repetitions x kg at 70% 1RM) during one BP set to failure in experienced weight lifters. Seventeen college-age men randomly received: (A) 500 ml of SF-RB containing CAF (160 mg) and taurine (2000 mg); (B) 500 ml of a SF drink containing CAF only (160 mg); or (C) a SF, CAF-free 500 ml PL drink 60 min prior to testing on three separate occasions. Following a standard warm-up, the 1RM was determined for each subject and, after 5 min rest, they completed repetitions to failure at 70% of their 1RM to assess VL. Differences between trials for 1RM BP and the VL were identified using repeated measures ANOVA (p<0.05). The results indicated that neither SF-RB nor the CAF drink had any effect on 1RM BP (115.13 ± 16.19 kg and 114.87 ± 16.16 kg, respectively) or VL (1173.08 ± 170.66 kg and 1164.14 ± 147.03 kg, respectively) compared to PL (1RM = 114.07 ± 16.09 kg; VL= 1141.46 ± 193.41 kg). Although the CAF content in the energy drinks used in the present study was low (∼2.0 mg·kg), the finding of no effect of the CAF containing energy drinks for 1RM BP are in agreement with previous studies using intakes up to 6.0 mg·kg. These findings suggest that SF-RB has no effect on upper body 1RM strength or VL in resistance trained men.

J Strength Cond Res. 2012 Dec 4. Acute Ingestion of Sugar-free Red Bull Energy Drink has no Effect on Upper Body Strength and Muscular Endurance in Resistance Trained Men.

[Felixflobby]

Intressant! Om inte koffein har någon direkt effekt på hur mycket du lyfter, hur står sig då en PWO...?

[TorbjornFred]

Säkert samma MEN effekten av placebo kan ju kvarstå.
Med det menar jag, att om du vet att du har ätit/druckit något du tror ger effekt så kanske du tycker att du borde orka lite mer än innan och gör det enbart för att du tror att det ska ge effekt. (Förutsatt att du inte tar det varenda pass för då blir effekten omvänd om du inte tar PWO innan.)
Bara rena spekulationer från min sida men dum som jag är så fungerar placebo rätt bra på mej! :)

[TheIsh]

Done! :)

http://traningslara.se/red-bull-och-prestationsformaga-hur-ar-det-egentligen/

"Red Bull ger troligen en ökad prestationsförmåga under långa pass"

Jag får en märkbar krasch efter bara någon timme (redbull utan socker).

[King Grub]

Consumption of energy drinks by both recreational and competitive athletes has increased dramatically in recent years. The primary ingredients in many energy drinks include caffeine (CAF) in various forms and taurine. The purpose of this randomized, double-blind, crossover study was to examine the effect of sugar-free (SF) Red Bull (RB) containing CAF and taurine to a CAF only drink and a SF CAF-free placebo (PL) on 1 repetition maximum (1RM) bench press (BP) and the volume load (VL; repetitions × kg at 70% 1RM) during one BP set to failure in experienced lifters. Seventeen college-age men randomly received the following: (A) 500 mL of SF-RB containing CAF (160 mg) and taurine (2000 mg); (B) 500 mL of a SF drink containing CAF only (160 mg); or (C) a SF CAF-free 500 mL PL drink 60 minutes before testing on 3 separate occasions. After a standard warm-up, the 1RM was determined for each subject and, after 5 minutes rest, they completed repetitions to failure at 70% of their 1RM to assess VL. Differences between trials for 1RM BP and the VL were identified using repeated measures analysis of variance (p < 0.05). The results indicated that neither SF-RB nor the CAF drink had any effect on 1RM BP (115.13 ± 16.19 kg and 114.87 ± 16.16 kg, respectively) or VL (1173.08 ± 170.66 kg and 1164.14 ± 147.03 kg, respectively) compared with PL (1RM = 114.07 ± 16.09 kg; VL = 1141.46 ± 193.41 kg). Although the CAF content in the energy drinks used in the present study was low (∼2.0 mg/kg), the finding of no effect of the CAF containing energy drinks for 1RM BP are in agreement with previous studies using intakes up to 6.0 mg/kg. These findings suggest that SF-RB has no effect on upper body 1RM strength or VL in resistance trained men.

J Strength Cond Res. 2013 Aug;27(8):2248-54. Acute ingestion of sugar-free red bull energy drink has no effect on upper body strength and muscular endurance in resistance trained men.

[King Grub]

Background

The consumption of beverages containing caffeine and taurine before exercising has been associated with increased physical and psychological performances and has been promoted to support the emotional state and provide vitality to consumers. However, there are contradictory results on these issues, it is not clear the effect of every major compound in relation to the whole effect of the beverages and there is a lack in knowledge about their degree of safety for consumption.

Methods

This study used a double-blind, placebo controlled, randomized, crossover design. Fourteen male volunteer soldiers from the Colombian army performed different tests to measure their cardiorespiratory fitness (VO2max and maximum heart rate), time to exhaustion, strength (isometric strength), power (vertical jump), concentration (Grid test) and memory (Digits test) after drinking 250 ml of one of the following beverages: one with 80 mg caffeine, one with 1000 mg taurine, one with 80 mg caffeine plus 1000 mg taurine, a commercial energy drink (Red Bull®) or a placebo drink. Subjects were caffeine-consumers that avoided caffeine during the day of evaluation. All beverages were matched in flavor and other organoleptic properties to the commercial one, were bottled in dark plastic bottles and were administered in identical conditions to the participants. Differences between treatments were assessed using repeated measures and analysis of variance.

Results

The mean ± SD values of VO2max, maximum heart rate, time to exhaustion, right handgrip strength, left handgrip strength, vertical jump, Grid test and Digits test were 61.3 ± 6.2 ml/kg.min, 196 ± 6.8 beats per min, 17 ± 1.2 min, 56.8 ± 6.6 kgf, 53.1 ± 5.9 kgf, 41.1 ± 3.8 cm, 19.9 ± 5.9 observed digits and 10.9 ± 3.1 remembered digits after drinking a placebo drink. Comparisons among the commercial drink, caffeine, taurine, caffeine plus taurine and placebo treatments did not show statistically differences in the results of the performed tests. No adverse effects were reported by the participants.

Conclusion

The consumption of caffeine (80 mg) and taurine (1000 mg) or their combination does not increase the physical and cognitive ability in young adults during exercise.


Effects of energy drink major bioactive compounds on the performance of young adults in fitness and cognitive tests: a randomized controlled trial. Journal of the International Society of Sports Nutrition 2014, 11:44.

http://www.jissn.com/content/11/1/44

[LizaK]

Intressant!
Undrar vad den mentala biten gör med folk efter intag av ansenliga mängder koffein..~måste hitta någon studie om det..~

[Sheogorath]

Intressant!
Undrar vad den mentala biten gör med folk efter intag av ansenliga mängder koffein..~måste hitta någon studie om det..~

I en 250 ml Red Bull har du knappt 80 gram koffein, så i det fallet är det i alla fall inga "ansenliga mängder". Mindre än i en kopp kaffe. Jag tar 400-600 mg koffein om jag ska ha en PWO. Det känns åtminstone.

[King Grub]

This study investigated the ergogenic effects of a commercial energy drink (Red Bull) or an equivalent dose of anhydrous caffeine in comparison with a noncaffeinated control beverage on cycling performance. Eleven trained male cyclists (31.7 ± 5.9 y 82.3 ± 6.1 kg, VO2max = 60.3 ± 7.8 mL · kg-1 · min-1) participated in a double-blind, placebo-controlled, crossover-design study involving 3 experimental conditions. Participants were randomly administered Red Bull (9.4 mL/kg body mass [BM] containing 3 mg/kg BM caffeine), anhydrous caffeine (3 mg/kg BM given in capsule form), or a placebo 90 min before commencing a time trial equivalent to 1 h cycling at 75% peak power output. Carbohydrate and fluid volumes were matched across all trials. Performance improved by 109 ± 153 s (2.8%, P = .039) after Red Bull compared with placebo and by 120 ± 172 s (3.1%, P = .043) after caffeine compared with placebo. No significant difference (P > .05) in performance time was detected between Red Bull and caffeine treatments. There was no significant difference (P > .05) in mean heart rate or rating of perceived exertion among the 3 treatments. This study demonstrated that a moderate dose of caffeine consumed as either Red Bull or in anhydrous form enhanced cycling time-trial performance. The ergogenic benefits of Red Bull energy drink are therefore most likely due to the effects of caffeine, with the other ingredients not likely to offer additional benefit.

Int J Sports Physiol Perform. 2015 Oct;10(7):897-901. The Effects of Red Bull Energy Drink Compared With Caffeine on Cycling Time-Trial Performance.

[Kaxardu]

*cry**cry**cry*

Fy fan vilken värdelös studie?

*facepalm**facepalm*

Tog de ens hänsyn till hur stora doser koffein personerna låg på normalt?

Och det kvittar om koffein alltid ger effekt oavsett hur hög tolerans man har för tänk om samtliga personer redan låg på avsevärda doser koffein.

[King Grub]

Man utvecklar inte tolerans mot koffein vad gäller ergogen effekt.

Habitual intake does not diminish caffeine's ergogenic properties.

Curr Sports Med Rep. 2003 Aug;2(4):213-9.

[Kaxardu]

Man utvecklar inte tolerans mot koffein vad gäller ergogen effekt.



Curr Sports Med Rep. 2003 Aug;2(4):213-9.

Så antingen fanns det inget koffein i deras redbull, eller så bara underpresterade deltagarna eller så motbevisade de att koffein alltid har ergogen effekt?

Edit: eller så hade de itne koll på deltagarnas normala intag, för om deltagare X normalt intar 500 så kvittar det om X får ett litet tillskott på 50mg om X bara låg på 300mg i övrigt för dagen.