Caffeine effect on extending time to exhaustion

D 2014

Caffeine effect on extending time to exhaustion

NAMEŠANSKÝ, Ján, Iva HRNČIŘÍKOVÁ a Ondřej SMOLKA

Základní údaje

Originální název

Caffeine effect on extending time to exhaustion

Autoři

NAMEŠANSKÝ, Ján (703 Slovensko, garant, domácí), Iva HRNČIŘÍKOVÁ (203 Česká republika, domácí) a Ondřej SMOLKA (203 Česká republika, domácí)

Vydání

Alicante, Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013, od s. 504-511, 8 s. 2014

Nakladatel

University of Alicante

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

Sport a aktivity volného času

Stát vydavatele

Španělsko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Kód RIV

RIV/00216224:14510/14:00076908

Organizační jednotka

Fakulta sportovních studií

ISSN

DOI

http://dx.doi.org/10.14198/jhse.2014.9.Proc1.39

Klíčová slova anglicky

endurance performance; cycling; nutrition supplements

Štítky

PS15-d049p, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 3. 2015 13:28, Mgr. Eva Špillingová

Anotace

V originále

The purpose of this study was to determine the effect of different doses of caffeine on extending time to exhaustion in long-term endurance exercise. Using a placebo-controlled, double-blind crossover study design, 10 hobby male cyclists (30.3 ± 5.8 y; BMI = 23.5 ± 1.6, VO2max = 56.9 ± 6.6 ml x kg x min) completed three experimental tests. Each test consisted of 1-h steady-state cycling on static ergometer at 70% VO2max load immediately followed by graded exercise test to exhaustion (2.3 W x s). Either placebo or 0 or 7 mg x kg BM of synthetic caffeine with 0.5 l water and maximum of 0.5 mg x kg BM of carbohydrate gel were administered 70 minutes prior to the test. Total exercise time was significantly (p < 0.05) extended by the 7 mg x kg BM of caffeine compared with placebo. Significant (p < 0.05) extension of total exercise time was observed also by the 7 mg x kg compared with 2 mg x kg. No statistically (p = 0.97) significant differences were observed between 2 mg x kg compared with placebo. Positive effect of caffeine on long-term endurance in hobby cyclist was observed only after ingestion of high dosage (7 mg x kg BM). Low dosage (2 mg x kg) didn’t show any ergogenic effect compared with placebo. This result might not be generalized, but rather shows ambiguous effects of this substance.

Návaznosti

MUNI/A/0935/2012, interní kód MU

Název: Podávání kofeinu a jeho účinky na vytrvalostní výkon II (Akronym: KF II)

Investor: Masarykova univerzita, Podávání kofeinu a jeho účinky na vytrvalostní výkon II, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

NAMEŠANSKÝ, Ján, Iva HRNČIŘÍKOVÁ a Ondřej SMOLKA. Caffeine effect on extending time to exhaustion. Online. In Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013. Alicante: University of Alicante, 2014, s. 504-511. ISSN 1988-5202. Dostupné z: https://dx.doi.org/10.14198/jhse.2014.9.Proc1.39.

@inproceedings{1203331,
   author = {Namešanský, Ján and Hrnčiříková, Iva and Smolka, Ondřej},
   address = {Alicante},
   booktitle = {Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013},
   doi = {http://dx.doi.org/10.14198/jhse.2014.9.Proc1.39},
   keywords = {endurance performance; cycling; nutrition supplements},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Alicante},
   pages = {504-511},
   publisher = {University of Alicante},
   title = {Caffeine effect on extending time to exhaustion},
   year = {2014}
}

TY  - JOUR
ID  - 1203331
AU  - Namešanský, Ján - Hrnčiříková, Iva - Smolka, Ondřej
PY  - 2014
TI  - Caffeine effect on extending time to exhaustion
PB  - University of Alicante
CY  - Alicante
KW  - endurance performance
KW  - cycling
KW  - nutrition supplements
N2  - The purpose of this study was to determine the effect of different doses of caffeine on extending time to exhaustion in long-term endurance exercise. Using a placebo-controlled, double-blind crossover study design, 10 hobby male cyclists (30.3 ± 5.8 y; BMI = 23.5 ± 1.6, VO2max = 56.9 ± 6.6 ml x kg x min) completed three experimental tests. Each test consisted of 1-h steady-state cycling on static ergometer at 70% VO2max load immediately followed by graded exercise test to exhaustion (2.3 W x s). Either placebo or 0 or 7 mg x kg BM of synthetic caffeine with 0.5 l water and maximum of 0.5 mg x kg BM of carbohydrate gel were administered 70 minutes prior to the test. Total exercise time was significantly (p < 0.05) extended by the 7 mg x kg BM of caffeine compared with placebo. Significant (p < 0.05) extension of total exercise time was observed also by the 7 mg x kg compared with 2 mg x kg. No statistically (p = 0.97) significant differences were observed between 2 mg x kg compared with placebo. Positive effect of caffeine on long-term endurance in hobby cyclist was observed only after ingestion of high dosage (7 mg x kg BM). Low dosage (2 mg x kg) didn’t show any ergogenic effect compared with placebo. This result might not be generalized, but rather shows ambiguous effects of this substance.
ER  -

NAMEŠANSKÝ, Ján, Iva HRNČIŘÍKOVÁ a Ondřej SMOLKA. Caffeine effect on extending time to exhaustion. Online. In \textit{Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013}. Alicante: University of Alicante, 2014, s.~504-511. ISSN~1988-5202. Dostupné z: https://dx.doi.org/10.14198/jhse.2014.9.Proc1.39.

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