Caffeine and sodium bicarbonate supplementation alone or together improve karate performance

Sajjad Rezaei, Kazem Akbari, Daniel E. Gahreman, Amir Sarshin, Montassar Tabben, Mojtaba Kaviani, Alireza Sadeghinikoo, Majid S. Koozehchian, Alireza Naderi

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Abstract

BACKGROUND: The ergogenic properties of acute caffeine (CAF) and sodium bicarbonate (NaHCO3) ingestion on athletic performance have been previously investigated. However, each sport has unique physiological and technical characteristics which warrants optimizing supplementations strategies for maximizing performance. This study examined the effects of CAF and NaHCO3 ingestion on physiological responses and rate of perceived exertion during a Karate-specific aerobic test (KSAT) in competitive karatekas.

METHODS: In a double-blind, crossover, randomized placebo-controlled trial, eight Karatekas underwent five experimental conditions including control (CON), placebo (PLA), CAF, NaHCO3, and CAF + NaHCO3 before completing KSAT. Capsules containing 6 mg/kg BW CAF were consumed 50 min prior to a KSAT whilst 0.3 g/kg BW NaHCO3 was consumed for 3 days leading to and 120, 90, and 60 min prior to a KSAT. Time to exhaustion (TTE), rate of perceived exertion (RPE), and blood lactate (BL) were measured before, immediately after and 3 min following KSAT.

RESULTS: TTE was significantly greater following CAF, NaHCO3, and CAF + NaHCO3 consumption compared to PLA and CON. However, the differences between CAF, NaHCO3, and CAF + NaHCO3 were not statistically significant (p > 0.05). BL increased significantly from baseline to immediately after and 3 min following KSAT in all conditions (p < 0.01), while RPE at the end of KSAT was not significantly different between conditions (p = 0.11).

CONCLUSIONS: Karate practitioners may benefit from the ergogenic effects of CAF and NaHCO3 when consumed separately or together.

Original languageEnglish
Article number44
Pages (from-to)1-8
Number of pages8
JournalJournal of the International Society of Sports Nutrition
Volume16
Issue number1
DOIs
Publication statusPublished - 17 Oct 2019

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Martial Arts
Sodium Bicarbonate
sodium bicarbonate
caffeine
Caffeine
placebos
testing
Placebos
lactates
Lactic Acid
Performance-Enhancing Substances
Eating
ingestion
athletic performance
Athletic Performance
blood
sports
physiological response
Capsules
Sports

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Rezaei, Sajjad ; Akbari, Kazem ; Gahreman, Daniel E. ; Sarshin, Amir ; Tabben, Montassar ; Kaviani, Mojtaba ; Sadeghinikoo, Alireza ; Koozehchian, Majid S. ; Naderi, Alireza. / Caffeine and sodium bicarbonate supplementation alone or together improve karate performance. In: Journal of the International Society of Sports Nutrition. 2019 ; Vol. 16, No. 1. pp. 1-8.
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title = "Caffeine and sodium bicarbonate supplementation alone or together improve karate performance",
abstract = "BACKGROUND: The ergogenic properties of acute caffeine (CAF) and sodium bicarbonate (NaHCO3) ingestion on athletic performance have been previously investigated. However, each sport has unique physiological and technical characteristics which warrants optimizing supplementations strategies for maximizing performance. This study examined the effects of CAF and NaHCO3 ingestion on physiological responses and rate of perceived exertion during a Karate-specific aerobic test (KSAT) in competitive karatekas. METHODS: In a double-blind, crossover, randomized placebo-controlled trial, eight Karatekas underwent five experimental conditions including control (CON), placebo (PLA), CAF, NaHCO3, and CAF + NaHCO3 before completing KSAT. Capsules containing 6 mg/kg BW CAF were consumed 50 min prior to a KSAT whilst 0.3 g/kg BW NaHCO3 was consumed for 3 days leading to and 120, 90, and 60 min prior to a KSAT. Time to exhaustion (TTE), rate of perceived exertion (RPE), and blood lactate (BL) were measured before, immediately after and 3 min following KSAT.RESULTS: TTE was significantly greater following CAF, NaHCO3, and CAF + NaHCO3 consumption compared to PLA and CON. However, the differences between CAF, NaHCO3, and CAF + NaHCO3 were not statistically significant (p > 0.05). BL increased significantly from baseline to immediately after and 3 min following KSAT in all conditions (p < 0.01), while RPE at the end of KSAT was not significantly different between conditions (p = 0.11). CONCLUSIONS: Karate practitioners may benefit from the ergogenic effects of CAF and NaHCO3 when consumed separately or together.",
keywords = "Blood lactate, Caffeine, Ergogenic aid, Karate, Karate-specific aerobic test, Rate of perceived exertion, Sodium bicarbonate, Time to exhaustion",
author = "Sajjad Rezaei and Kazem Akbari and Gahreman, {Daniel E.} and Amir Sarshin and Montassar Tabben and Mojtaba Kaviani and Alireza Sadeghinikoo and Koozehchian, {Majid S.} and Alireza Naderi",
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Rezaei, S, Akbari, K, Gahreman, DE, Sarshin, A, Tabben, M, Kaviani, M, Sadeghinikoo, A, Koozehchian, MS & Naderi, A 2019, 'Caffeine and sodium bicarbonate supplementation alone or together improve karate performance', Journal of the International Society of Sports Nutrition, vol. 16, no. 1, 44, pp. 1-8. https://doi.org/10.1186/s12970-019-0313-8

Caffeine and sodium bicarbonate supplementation alone or together improve karate performance. / Rezaei, Sajjad; Akbari, Kazem; Gahreman, Daniel E.; Sarshin, Amir; Tabben, Montassar; Kaviani, Mojtaba; Sadeghinikoo, Alireza; Koozehchian, Majid S.; Naderi, Alireza.

In: Journal of the International Society of Sports Nutrition, Vol. 16, No. 1, 44, 17.10.2019, p. 1-8.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Caffeine and sodium bicarbonate supplementation alone or together improve karate performance

AU - Rezaei, Sajjad

AU - Akbari, Kazem

AU - Gahreman, Daniel E.

AU - Sarshin, Amir

AU - Tabben, Montassar

AU - Kaviani, Mojtaba

AU - Sadeghinikoo, Alireza

AU - Koozehchian, Majid S.

AU - Naderi, Alireza

PY - 2019/10/17

Y1 - 2019/10/17

N2 - BACKGROUND: The ergogenic properties of acute caffeine (CAF) and sodium bicarbonate (NaHCO3) ingestion on athletic performance have been previously investigated. However, each sport has unique physiological and technical characteristics which warrants optimizing supplementations strategies for maximizing performance. This study examined the effects of CAF and NaHCO3 ingestion on physiological responses and rate of perceived exertion during a Karate-specific aerobic test (KSAT) in competitive karatekas. METHODS: In a double-blind, crossover, randomized placebo-controlled trial, eight Karatekas underwent five experimental conditions including control (CON), placebo (PLA), CAF, NaHCO3, and CAF + NaHCO3 before completing KSAT. Capsules containing 6 mg/kg BW CAF were consumed 50 min prior to a KSAT whilst 0.3 g/kg BW NaHCO3 was consumed for 3 days leading to and 120, 90, and 60 min prior to a KSAT. Time to exhaustion (TTE), rate of perceived exertion (RPE), and blood lactate (BL) were measured before, immediately after and 3 min following KSAT.RESULTS: TTE was significantly greater following CAF, NaHCO3, and CAF + NaHCO3 consumption compared to PLA and CON. However, the differences between CAF, NaHCO3, and CAF + NaHCO3 were not statistically significant (p > 0.05). BL increased significantly from baseline to immediately after and 3 min following KSAT in all conditions (p < 0.01), while RPE at the end of KSAT was not significantly different between conditions (p = 0.11). CONCLUSIONS: Karate practitioners may benefit from the ergogenic effects of CAF and NaHCO3 when consumed separately or together.

AB - BACKGROUND: The ergogenic properties of acute caffeine (CAF) and sodium bicarbonate (NaHCO3) ingestion on athletic performance have been previously investigated. However, each sport has unique physiological and technical characteristics which warrants optimizing supplementations strategies for maximizing performance. This study examined the effects of CAF and NaHCO3 ingestion on physiological responses and rate of perceived exertion during a Karate-specific aerobic test (KSAT) in competitive karatekas. METHODS: In a double-blind, crossover, randomized placebo-controlled trial, eight Karatekas underwent five experimental conditions including control (CON), placebo (PLA), CAF, NaHCO3, and CAF + NaHCO3 before completing KSAT. Capsules containing 6 mg/kg BW CAF were consumed 50 min prior to a KSAT whilst 0.3 g/kg BW NaHCO3 was consumed for 3 days leading to and 120, 90, and 60 min prior to a KSAT. Time to exhaustion (TTE), rate of perceived exertion (RPE), and blood lactate (BL) were measured before, immediately after and 3 min following KSAT.RESULTS: TTE was significantly greater following CAF, NaHCO3, and CAF + NaHCO3 consumption compared to PLA and CON. However, the differences between CAF, NaHCO3, and CAF + NaHCO3 were not statistically significant (p > 0.05). BL increased significantly from baseline to immediately after and 3 min following KSAT in all conditions (p < 0.01), while RPE at the end of KSAT was not significantly different between conditions (p = 0.11). CONCLUSIONS: Karate practitioners may benefit from the ergogenic effects of CAF and NaHCO3 when consumed separately or together.

KW - Blood lactate

KW - Caffeine

KW - Ergogenic aid

KW - Karate

KW - Karate-specific aerobic test

KW - Rate of perceived exertion

KW - Sodium bicarbonate

KW - Time to exhaustion

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U2 - 10.1186/s12970-019-0313-8

DO - 10.1186/s12970-019-0313-8

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JO - Journal of the International Society of Sports Nutrition

JF - Journal of the International Society of Sports Nutrition

SN - 1550-2783

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