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La salive de frelon augmente t’elle les performances?

18/01/2014 | Etudes Compléments alimentaires


Ca parait dégeu mais c’est pas de la vrai dans les suppléments, c’est copié synthétiquement!

G. EHLERS         Journal of Strength and Conditioning Research 2013 S107

The ingestion of amino acid supplements to improve performance
is not a new phenomenon. An amino acid mixture
(VAAM) based upon the composition of Asian Giant Hornet
(Vespa mandarinia) larva saliva is currently being marketed as
an ergogenic aid with claims of enhancing fatty acid utilization,
reducing blood lactate accumulation and increasing time to
fatigue during cardiovascular endurance exercise. VAAM is
a blend of 17 amino acids and is sold as a powder that can be
mixed in water or sports drinks. Most research has not
supported the use of amino acid supplementation as a means
of enhancing endurance performance, making the potential of
the proprietary blend of VAAM interesting but needing more
conclusive research.

Purpose: The purpose of this study was
to examine the effect of an acute intake of VAAM on 30 minutes
of submaximal cycle ergometer exercise at an intensity just
under the ventilatory threshold (VT).

Methods: A doubleblinded,
randomized, placebo controlled, counterbalanced
design was used. The placebo was similar to the VAAM in
color, smell, taste, consistency and caloric quantity. Both placebo
and VAAM were mixed in 8 ounces of water. Sixteen
physically active college-age individuals (5 female, 11 male,
mean age = 21.06 6 1.34 years) volunteered. All participants
completed 4 cycle ergometer exercise sessions including
a maximal exercise test (to determine ventilatory threshold
and submaximal workload), a familiarization session (to allow
adaptation to equipment and submaximal workload), and 2
30 minute cycling sessions (1 taking a placebo and 1 taking
a VAAM supplement).

Results: Two way repeated measures
ANOVA revealed no significant differences when comparing
the VAAM and placebo groups on the following physiological
variables: V_ O2 (33.34 6 4.18 vs. 33.57 6 4.23
ml$kg21$min21, p = 0.238), respiratory exchange ratio (0.95
6 0.04 vs. 0.94 6 0.05, p = 0.737), blood lactate (3.37 6
2.29 vs. 3.57 6 2.3 mmol$L21, p = 0.725), exercise heart rate
(164.5 vs. 163.7 beats$min21, p = 0.444) and total caloric
expenditure (255.60 6 111.15 vs. 255.77 6 111.72 kilocalories,
p = 0.918). Wilcoxon Sign Ranks Tests revealed no significant
differences in median Borg Scale ratings of perceived
exertion at 10 minutes (12.5 vs. 13, p = 0.124), 20 minutes
(15 vs. 15, p = 0.174) and 30 minutes (15.5 vs. 15.5, p =
0.942) of exercise.

Conclusions: An acute, single dose of
VAAM did not significantly affect physiological responses during
cycling exercise performance at intensities just below the VT.

Practical Applications: An acute dose of this VAAM supplement
was not shown to be an effective ergogenic aid for the
enhancement of submaximal performance during 30 minutes of
cycling. Whether an increase in dosage based on body weight
or a loading regimen over several weeks would change the
results of this study remains to be evaluated. Time to fatigue
was not evaluated in this study and is another potential question
to evaluate. Cyclists interested in a product that will assist with
cardiovascular endurance performance should consider studies
such as this 1 prior to making ergogenic aid decisions.

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