Caffeine does not alter RPE or pain perception during intense exercise in active women

Astorino, Todd A.; Roupoli, Lindsay R.; Valdivieso, Britten R.

doi:10.1016/j.appet.2012.07.008

Cited by 27 publications

(30 citation statements)

References 42 publications

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“…The results showed that consumption of 5 mg/kg caffeine compared with placebo reduced RPE and perceptions of pain after muscular endurance test, which is in agreement with a range of preceding studies (Backhouse et al, 2011;Doherty, Smith, 2005;Duncan et al, 2013) and is contrast to studies reporting no significant reductions of RPE and perceptions of pain after tests following acute caffeine ingestion (Astorino et al, 2011b;Astorino, Roupoli, Valdivieso, 2012).…”

Section: Discussioncontrasting

confidence: 44%

Section: Discussionmentioning

confidence: 99%

“…Also, the ability of caffeine to reduce (ratings of perceived exertion) RPE and pain perception during exhaustive exercise needs to be clarified in women athletes (Astorino, Roupoli, Valdivieso, 2012). Doherty and Smith (2005) revealed that moderate to high caffeine doses (4-10 mg/ kg) ingested 30-90 min before exercise reduce RPE.…”

Section: Introductionmentioning

confidence: 99%

“…The results, caffeine might also increase time to exhaustion. Because caffeine is a dopamine agonist increased dopamine release (Brunyé et al, 2010), it could possibly reduce RPE (Woolf, Bidwell, Carlson, 2008).In contrast, Astorino et al (2011b) and Astorino, Roupoli, Valdivieso (2012) not altering demonstrated RPE, pain perception, on influence ingested moderate dose (6 mg/ kg) and 2-5 mg/kg caffeine 1 h before cycling performance and high-intensity exercise on active women and men (Astorino, Roupoli, Valdivieso, 2012). Also, carbohydrate availability does not limit functions during exercise less than one hour as completed, so caffeine may not alter RPE during activities in which glycogen depletion does not occur (Astorino, Roupoli, Valdivieso, 2012).…”

mentioning

confidence: 99%

“…Also, carbohydrate availability does not limit functions during exercise less than one hour as completed, so caffeine may not alter RPE during activities in which glycogen depletion does not occur (Astorino, Roupoli, Valdivieso, 2012). Additionally, habitual intake caffeine, the type of muscle actions performed and moreover the 0-10 RPE scale may lack adequate sensitivity to detect small alterations in perception during activity (Astorino, Roupoli, Valdivieso, 2012).Caffeine by facilitate neuromuscular function at the level of the sarcoplasmic reticulum via release calcium (Ca) on sarcoplasmic reticulum (Davis, Green, 2009;Machado et al, 2010) and caffeine's direct antagonism of adenosine receptors (widely present in human tissue including the brain, skeletal muscle and adipose tissue) (Tarnopolsky, 2010) on the skeletal muscle membrane to enhance excitation-contraction coupling via a greater release of Ca from the sarcoplasmic reticulum and or facilitating Na/k ATPase pump activity (Hendrix et al, 2010). Also, adenosine antagonism in adipocytes clearly leads to increased lipolysis and an increase in plasma free fatty acid (FFA) concentration (Glaister et al, 2014;Tarnopolsky, 2010).…”

mentioning

confidence: 99%

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The effects of different doses of caffeine on performance, rating of perceived exertion and pain perception in teenagers female karate athletes

Arazi

Hoseinihaji

Eghbali

2016

Braz. J. Pharm. Sci.

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The present study set to examine the effects of different doses of caffeine on performance, rating of perceived exertion (RPE), and pain perception in female teenager athletes of karate. Ten female karate athletes (16.8±1.23 years; height 1.59±0.28 m; body-mass 57.73±8.33 kg; BMI 22.71±3.05 kg/m 2 ) participated in the study. A double-blind, randomized, and crossover counterbalanced design was used. In three sessions (with an interval of seven days'), ten female karate athletes ingested low dose (2 mg/ kg), moderate dose (5 mg/kg) caffeine, and placebo. Sixty minutes after consumption, they performed the tests as below: one repetition maximum and 60% of one repetition maximum in the leg press, explosive power test, and anaerobic RAST test. After the tests, the participants' RPE (6-20 scale) and pain perception (0-10 scale) were recorded using various categorical scales. The results showed that caffeine ingestion at moderate dose significantly reduced RPE and pain perception values compared with the placebo during muscular endurance test (P=0.0001 and P=0.039, respectively). The findings suggest that caffeine dose of 5 mg/kg body mass appears to improve RPE and pain perception in female teenager athletes of karate. The dose of 2 mg/kg body mass does not confer any additional improvement in performance.Uniterms: Caffeine/effects. Karate athletes/performance. Caffeine/rating of perceived exertion. Caffeine/ performance. Caffeine/pain perception. INTRODUCTIONCaffeine (1,3,7-trimethylxanthine) is a plant alkaloid that occurs naturally in the diet (Sökmen et al., 2008) and nearly 90% of US adults consume caffeine in forms of coffee, tea, or other caffeinated food products (8 cup of coffee may contain 50-200 mg caffeine) (Owens, 2015;Yang, Palmer, De Wit, 2010). In the U.S.A., adults ingest an average of 3 mg/kg of caffeine daily in coffee, tea, caffeinated sodas, and many other drinks and food (Sökmen et al., 2008). The popularity of caffeine as an ergogenic aide has increased dramatically over the last decade (Hendrix et al., 2010), Caffeine is the most widely consumed to improve cognitive, physical performance during exercise and has become a popular ergogenic aid among recreational and competitive athletes (Hendrix et al., 2010;Sökmen et al., 2008;Zheng et al., 2014).Caffeine is classified as part of the methylxanthine family of drugs (Cechella et al., 2014;Mohr, Nielsen, Bangsbo, 2011) and is extensively consumed by athletes as an ergogenic aid (Backhouse et al., 2011;Mohr, Nielsen, Bangsbo, 2011) since its removal from the World AntiDoping Agency (WADA) prohibited list of substances (Backhouse et al., 2011;Mohr, Nielsen, Bangsbo, 2011). According to the Medical Council of International Olympic Committee (IOC), caffeine is allowed in sports as long as its urinary excretion level is below 12 µg/mL (Bell, Jacobs, Ellerington, 2001).Taken orally, caffeine reaches a peak plasma concentration of 30-90 min after ingestion, and a halflife has been reported to be 3 to 5 hours with a modest intake of coffee (Sökmen et al.,...

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