EQOL Journal (2022) 14(1): 17-24
ORIGINAL ARTICLE
17
Effects of varying doses of caffeine intake on physiological responses
among university hockey players in Edo State, Nigeria
Agharese Efe-Aigbovo
1
Vincent Imagbovomwan
2
Received: 2
nd
June, 2021 DOI: 10.31382/eqol.220602
Accepted: 8
th
April, 2022
© The Author(s) 2022. This article is published with open access.
Abstract
The purpose of the study was to explore the effect of
varying doses of caffeine intake on the physiological
responses among university hockey players in
performance. A total of sixty-four (64) hockey
players consisting of 32 males and 32 females
participated in the study. The hypotheses are that
there would be no significant difference in the
responses of different doses of caffeine intake on
resting systolic blood pressure, diastolic blood
pressure, heart rate, vital capacity, and Maximum
Oxygen uptake of hockey players in tertiary
educational institutions in Edo State. The test
instrument used was an adaptation of a 3-Cone
shuttle drill fitness testing exercise battery as
developed by Koen, Honkemper, and Pietrispens
(2001). A quasi-Experimental research design was
used for the study. Hockey players in the three
experimental groups made up of 16 players (8 males
and 8 females) each were subjected to the ingestion
of three (3) separate doses of 260mg, 520mg, and
780mg respectively of strong black unsweetened
coffee in cups, one hour before testing. The control
group of 16 players (8 males and 8 females) was not
exposed to the ingestion of coffee but the ingestion
of locally prepared zobo” drink. Descriptive
statistics of mean, range, and standard deviation as
well as One-Way Analyses of Variance (ANOVA)
were respectively used to descriptively analyze the
data and test the hypotheses at a 0.05 significant
level. The results showed that there were
statistically significant differences in the players’
responses to caffeine intake on the resting systolic
blood pressure, resting diastolic blood pressure,
resting heart rate, and Maximum Oxygen
Consumption (VO
2
max) among the hockey
players. No significant difference was recorded in
the responses to caffeine intake on the vital
capacity of the hockey players. Specifically,
although each o