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La natation: pas super efficace dans la chasse au gras

01/04/2016 | Etudes cardio et Etudes Perte de poids et Etudes Anti-âge

 

HIGH INTENSITY CROSSFIT TRAINING COMPARED TO HIGH
INTENSITY SWIMMING: A PRE-POST TRIAL TO ASSESS THE
IMPACT ON BODY COMPOSITION, MUSCLE STRENGTH AND
RESTING ENERGY EXPENDITURE

S. Perna   Nutrition 32 (2016) 399–408


Introduction: The aim of this study was to evaluate the impact of
two high intensity training as different high intensity training, i.e.
power CrossFit and intermittent Swimming, on body composition
markers, max strength and resting energy expenditure.
Material and Methods: This pre-post trial was conducted in
Twenty-three subjects (14 female, 9 male; mean age ¼ 31.74 
7.46 years; BMI ¼ 23.665  2.994 kg/m2
). They were assigned to
intervention of CrossFit training or Swimming training (CrossFit/
Swimming: 10/13) for 8-weeks (60 min, 3 times per week). Using
Dual X ray Energy Absorptiometry, we measured body mass
composition markers. Muscle strength and resting energy
expenditure were measured at baseline and immediate after 8
weeks of training intervention. This variables were measured at
baseline and after 8 weeks.

Results: Between groups, data demonstrated a significant
changes on gynoid fat (-1.670 %; P¼0.024) in favour of CrossFit
training. Suggestive but not significant differences (0.05 <0.10) between groups in decreasing of Fat Mass (-1439 g;
P¼0.073) and Android Fat (-2.614%; P¼0.075), were found. The
pre-post differences within training interventions were signifi-
cant (P<0.05) for Fat mass, gynoid fat, free fat mass and Resting
Energy Expenditure (REE) in CrossFit group.

Conclusions: This study showed the potential benefits of High
Intensity Training in improvement on body composition markers.
In particular, CrossFit is more performing than swimming in
losses of total fat mass, specifically of gynoid and android fat mass.

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