ACCELEROMETRY UNDERESTIMATES ENERGY EXPENDITURE IN CIRCUIT-BASED RESISTANCE TRAINING

ACELEROMETRIA SUBESTIMA GASTO ENERGÉTICO EM CIRCUITOS DE TREINAMENTO DE FORÇA

ACELEROMETRÍA SUBESTIMA GASTO ENERGÉTICO EN CIRCUITOS DE ENTRENAMIENTO DE FUERZA

ABSTRACT

Introduction:

Accelerometry is a very accurate method for determining energy expenditure (EE) in endurance training. However, further studies are needed to prove its accuracy in resistance training.

Objective:

To compare the EE obtained by accelerometry and indirect calorimetry in three different circuit resistance training circuits.

Methods:

Six overweight volunteers performed three sets in three resistance training circuits: machine circuit (MC), free-weight circuit (FWC) and resistance + aerobic circuit (RAC). EE was measured by indirect calorimetry using an Oxycon Mobile^® and by the accelerometers SenseWear^® Armband Pro2 and ActiTrainer^®.

Results:

ActiTrainer^® and SenseWear^® underestimated EE in all circuits when compared to indirect calorimetry (p<0.05). The difference was greater in the FWC: 44.4% METs and 81.4% Kcal for ActiTrainer^® and 32.3% METs and 24.9% Kcal for SenseWear^® compared to indirect calorimetry.

Conclusion:

Both ActiTrainer^® and SenseWear^® underestimated EE when compared to indirect calorimetry in three different resistance training circuits. Level of evidence II; Diagnostic studies - Investigating a diagnostic test.

Keywords:
Circuit-based exercise; Energy expenditure; Overweight