Relationship Between Heart Rate, Oxygen Consumption, and Energy Expenditure in Futsal

• Published in: Frontiers in psychology Vol. 12; p. 698622
• Main Authors: Silva, Henrique Santos da, Nakamura, Fabio Yuzo, Papoti, Marcelo, da Silva, Alexsandro Santos, Dos-Santos, Julio Wilson
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 11-08-2021
• Subjects: energy cost; futsal match; metabolic equivalent; metabolic pathway; Psychology; team sport
• ISSN: 1664-1078; 1664-1078
• DOI: 10.3389/fpsyg.2021.698622

The primary aim of this study was to compare the measured oxygen consumption (Measured
-V
O
2
) in a simulated futsal game (S-Game) with the estimated oxygen consumption (Estimated
-V
O
2
) through a regression equation between heart rate (HR) and oxygen consumption (
V
O
2
) (HR-
V
O
2
) in treadmill running, and a secondary aim was to calculate the total energy expenditure (EE) in S-Game. Ten professional players (22.20 ± 3.22 years) were evaluated. HR-
V
O
2
was determined individually in the continuous test on the treadmill (Cont
Test
). The Measured
-V
O
2
in S-Game was compared with the Estimated
-V
O
2
in the Cont
Test
. Alactic and lactic pathways were estimated by
V
O
2
. The Estimated
-V
O
2
presented no statistically significant difference with the Measured
-V
O
2
, using the paired
t
-test (
p
= 0.38). However, the correlation between Estimated- and Measured-
V
O
2
was very weak (
r
= −0.05), and it presented poor agreement (concordance correlation coefficient = −0.04). In addition, a Bland–Altman plot presented bias of −2.8 ml/kg/min and individual difference as large as 19 ml/kg/min. The HR-
V
O
2
determined by the Cont
Test
was not a good individual predictor of
V
O
2
. The high intensity and intermittent nature of the futsal game possibly caused dissociation in the HR-
V
O
2
relationship. Cont
Test
is not recommended for estimating
V
O
2
and calculating individual EE in the futsal game. This is recommended only for the group mean. The total EE in S-Game was 13.10 ± 1.25 kcal.min
−1
(10.81 ± 1.57 metabolic equivalents). The contributions from the metabolic pathways were as follows: aerobic (93%), alactic (5%), and lactic (2%).