Energy expenditure and substrate utilization during whole body vibration

Gasto de energia e utilização de substrato durante vibração do corpo todo

Gasto de energía y uso de sustrato durante vibración de todo el cuerpo

INTRODUCTION AND OBJECTIVE:

the aim of this study was to investigate whether the addition of vibration during interval training would raise oxygen consumption VO₂ to the extent necessary for weight management and to evaluate the influence of the intensity of the vibratory stimulus for prescribing the exercise program in question.

METHODS:

VO₂, measured breath by breath, was evaluated at rest and during the four experimental conditions to determine energy expenditure, metabolic equivalent MET, respiratory exchange ratio RER, % Kcal from fat, and rate of fat oxidation. Eight young sedentary females age 22±1 years, height 163.88± 7.62 cm, body mass 58.35±10.96 kg, and VO₂ max 32.75±3.55 mLO_2.Kg^-1.min^-1 performed interval training duration = 13.3 min to the upper and lower limbs both with vibration 35 Hz and 2 mm, 40 Hz and 2 mm, 45 Hz and 2 mm and without vibration. The experimental conditions were randomized and balanced at an interval of 48 hours.

RESULTS:

the addition of vibration to exercise at 45 Hz and 2 mm resulted in an additional increase of 17.77±12.38% of VO₂ compared with exercise without vibration. However, this increase did not change the fat oxidation rate p=0.42 because intensity of exercise 29.1±3.3 %VO₂max, 2.7 MET was classified as mild to young subjects.

CONCLUSION:

despite the influence of vibration on VO₂ during exercise, the increase was insufficient to reduce body weight and did not reach the minimum recommendation of exercise prescription for weight management for the studied population.

oxygen consumption; heart rate; energy metabolism