The effect of different doses of caffeine on cardiovascular variables and shooting performance

• Authors: Mohsen Ebrahimi , Abbas Foroughi Pordanjani , Fereshte Ahmadabadi
• Languages of publication: EN

Abstracts

EN

Study aim: the purpose of this study was to assess the effect of 3 mg and 5 mg per kg of body weight of caffeine on heart rate, blood pressure and shooting performance among elite shooters. Material and methods: sStudy participants comprised 8 male shooters among athletes at the national level with at least 2 years of experience, with the mean age (26.50±13.08 years), weight (73.02 ± 12.2 kg), height (174.62 ± 8.97 cm) and BMI (23.93 ± 2.88 kg/m2). The blood pressure and heart rate of all participants were measured at rest. Participants then randomly took caffeine (3 mg and 5 mg per kg of body weight) or placebo for 3 different days, 2 days apart. One hour after ingestion, they shot with rifle and air pistol. Statistical analysis was performed using the ANOVA with repeated measures and the Bonferroni test. Results: the results of the survey showed that taking 5 mg/kg of caffeine caused a significant increase in systolic blood pressure (p < 0.001), diastolic blood pressure (p < 0.05) and also caused a significant increase in heart rate (p < 0.05) and a significant decrease in shooting performance (p < 0.05). Moreover, taking 3 mg/kg of caffeine caused a significant increase in systolic blood pressure (p < 0.05). But this amount of caffeine had no significant effect on the heart rate, diastolic blood pressure or shooting performance (p < 0.05). Conclusions: the results of this study suggest that taking 5 mg/kg of caffeine can increase the blood pressure and heart rate of the shooters that leads to a decrease in shooting performance.

Keywords

EN

Caffeine ; Heart rate ; Blood pressure ; Shooting

• Publisher: Versita
• Journal: Biomedical Human Kinetics
• Year: 2015
• Volume: 7
• Issue: 1

Dates

online

23 - 4 - 2015

Contributors

author

Mohsen Ebrahimi

• Department of Physical Education and Sports Sciences, Semnan University, Semnan, Iran

author

Abbas Foroughi Pordanjani

• Department of Physical Education and Sports Sciences, Semnan University, Semnan, Iran

author

Fereshte Ahmadabadi

• Department of Physical Education and Sports Sciences, Semnan University, Semnan, Iran

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Identifiers

DOI

10.1515/bhk-2015-0007