Differences between genders in anaerobic capacity during a supramaximal effort

Poli, Rodrigo A. B. de; Gonzalez, Joel A.M; Fonsati, Natalia; Zagatto, Alessandro M.

doi:10.1590/S1980-6574201900030018

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Motriz: Revista de Educação Física

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Original Article (short paper) • Motriz: rev. educ. fis. 25 (3) • 2019 • https://doi.org/10.1590/S1980-6574201900030018 copy

Differences between genders in anaerobic capacity during a supramaximal effort

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Aim:

The present study aimed to verify if there is a difference between genders in anaerobic capacity estimated by energetic equivalents of glycolytic and phosphagen pathways (AC_{[La-]+EPOCfast}).

Methods:

In this way, 8 men and 8 women (physical education students) were subjected to the following sequence of tests: session 1) graded exercise test to measure the maximal oxygen consumption ( $\dot{V} O_{2 \max}$ ) and intensity associated with $\dot{V} O_{2 \max} (i \dot{V} O_{2 \max})$ ; sessions 2 to 3) familiarization with supramaximal effort at 115% of $i \dot{V} O_{2 \max}$ ; session 4) supramaximal effort at 115% of $i \dot{V} O_{2 \max}$ to measure AC_{[La-]+EPOCfast}.

Results:

The AC_{[La-]+EPOCfast} was lower in women compared to men when expressed in absolute and relative values (-38.11%; p=0.01 and -25.71%; p=0.03, respectively). A non-significant difference was observed in performance in the supramaximal effort (-12.08%; p=0.15), besides which, a likely negative inference was observed when comparing women to men. In addition, energetic equivalents of the glycolytic pathway (e[La^-]) were also lower in women when expressed in relative and absolute values (-47.01%; p=0.001 and -36.71%; p=0.001, respectively), however no statistical difference was found for energetic equivalents of the phosphagen pathway (ePCr) (p>0.05).

Conclusion:

The AC_{[La-]+EPOCfast} is lower in women compared to men, mainly due to differences in the glycolytic pathway.

Keywords:
anaerobic capacity; blood lactate concentration; excess post-exercise oxygen consumption; gender

	Men	Women	p
$\dot{V} O_{2} \dot{V} O$ reached in GXT (mL·kg^-1·min^-1)	42.18 ± 3.15 (39.54 to 44.81)	41.43 ± 2.51 (39.33 to 43.53)	0.61
$\dot{V} O_{2}$ reached in GXT (L)	3.02 ± 0.47 (2.63 to 3.42)	2.43 ± 0.31 (2.16 to 2.69)*	0.01
$\dot{V} O_{2} \dot{V} O$ reached in verification test (mL·kg^-1·min^-1)	41.19 ± 2.81 (38.85 to 43.54)	41.29 ± 2.62 (39.10 to 43.49)	0.73
$\dot{V} O_{2 \max}$ reached in verification test (L)	2.95 ± 0.47 (2.56 to 3.35)	2.42 ± 0.32 (2.15 to 2.69)*	0.02
$i \dot{V} O_{2 \max}$ (km·h^-1)	14.08 ± 1.25 (13.04 to 15.12)	11.49 ± 1.33 (10.37 to 12.60)*	0.001
[La^-] peak (mmol·L^-1)	11.97 ± 0.84 (10.95 to 12.98)	8.53 ± 0.88 (7.46 to 9.60)*	0.001

	Men	Women	Δ%	p	Cohen’s Effect Size ± CL	%Chances			Inference
	Men	Women	Δ%	p	Cohen’s Effect Size ± CL	Substantially negative (-)	Trivial	Substantially positive (+)
e[La^-] (L)	2.48 ± 0.47 (2.08 to 2.87)	1.31 ± 0.52 (0.88 to 1.75)*	-47.01	0.001	-2.19 ± 0.83	100	0	0	Most likely negative
e[La^-] (mL·kg^-1)	34.55 ± 4.24 (31.00 to 38.10)	21.87 ± 7.14 (15.90 to 27.83)*	-36.71	0.001	-2.66 ± 1.10	100	0	0	Most likely negative
Baseline [La^-] (mmol·L^-1)	0.62 ± 0.25 (0.41 to 0.84)	0.96 ± 0.26 (0.75 to 1.18)*	+54.68	0.02	1.20 ± 0.79	0	2	98	Very likely positive
Peak [La^-] (mmol·L^-1)	12.14 ± 1.40 (10.97 to 13.31)	8.26 ± 2.33 (6.61 to 10.20)*	-32.00	0.001	-2.46 ± 1.09	100	0	0	Most likely negative
ePCr (L)	1.06 ± 0.21 (0.88 to 1.23)	0.88 ± 0.19 (0.71 to 1.04)	-17.28	0.09	-0.78 ± 0.76	90	8	2	Likely negative
ePCr (mL·kg^-1)	14.87 ± 2.87 (12.47 to 17.27)	14.85 ± 2.51 (12.75 to 16.95)	-0.15	0.98	-0.01 ± 0.75	33	36	31	Unclear
A1 (L·min^-1)	15.26 ± 1.91 (13.66 to 16.87)	14.90 ± 2.47 (12.84 to 16.97)	-2.36	0.75	-0.17 ± 0.91	47	28	25	Unclear
τ1 (min)	1.00 ± 0.32 (0.73 to 1.27)	1.00 ± 0.16 (0.87 to 1.14)	+0.71	0.96	0.02 ± 0.64	27	42	31	Unclear
eAER (L)	5.47 ± 0.82 (4.78 to 6.16)	3.65 ± 0.77 (3.00 to 4.29)*	-33.30	0.001	-1.97 ± 0.76	100	0	0	Most likely negative
eAER (mL·kg^-1)	76.69 ± 9.80 (68.50 to 84.89)	63.02 ± 15.40 (50.15 to 75.89)	-17.82	0.06	-1.24 ± 1.05	95	4	1	Likely negative

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E-mail: motriz.rc@unesp.br

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[1] Corresponding author Alessandro Moura Zagatto. Department of Physical Education, São Paulo State University (UNESP), School of Sciences, Bauru-SP, Brazil. Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, CEP 17033-360 Bauru, SP, Brazil. Email: azagatto@yahoo.com.br