Energy Expenditure During Bench Press and Squat Exercises

Abstract

Despite the popularity of resistance training (RT), an accurate method for quantifying its metabolic cost has yet to be developed. We applied indirect calorimetry during bench press (BP) and parallel squat (PS) exercises for 5 consecutive minutes at several steady state intensities for 23 (BP) and 20 (PS) previously trained men. Tests were conducted in random order of intensity and separated by 5 minutes. Resultant steady state VO2 data, along with the independent variables load and distance lifted, were used in multiple regression to predict the energy cost of RT at higher loads. The prediction equation for BP was Y' = 0.132 + (0.031)(X1) + (0.01)(X2), R2 = 0.728 and S(xy) = 0.16; PS can be predicted by Y' = -1.424 + (0.022)(X1) + (0.035)(X2), R2 = 0.656 and S(xy) = 0.314; where Y' is VO2 X1 is the load measured in kg and X2 is the distance in cm. Based on a respiratory exchange ratio (RER) of 1.0 and a caloric equivalent of 5.05 kcal x L(-1), VO2 was converted to caloric expenditure (kcal x min(-1)). Using those equations to predict caloric cost, our resultant values were significantly larger than caloric costs of RT reported in previous investigations. Despite a potential limitation of our equations to maintain accuracy during very high-intensity RT, we propose that they currently represent the most accurate method for predicting the caloric cost of bench press and parallel squat.

Estimation of Resistance Exercise Energy Expenditure Using Triaxial Accelerometry

“…Although resistance exercise is often recommended for inclusion in exercise routines for weight loss, there are few data on the amount of energy expended during resistance exercise workouts, possibly because resistance exercise energy expenditure is difficult to assess. In an effort to accurately quantify energy expenditure during resistance exercise, several groups have attempted to estimate energy expenditure using regression equations that take into account anthropometric variables, total weight lifted during a resistance exercise session (20), and distance of weight lifted (6,7,32). Although the linear regression equations generated from these studies may provide simple convenient estimates of energy expenditure, some of the methods used may be impractical (e.g., measuring distance of weight lifted during exercise), and the equations may not be applicable toward all resistance exercise protocols.…”

“…To test our hypothesis, that triaxial accelerometers can be used to estimate resistance exercise energy expenditure, regression analysis was used to develop an equation to estimate resistance exercise energy expenditure from accelerometer counts. Anthropometric and training load variables were also included in the regression equation because these have been shown to be correlated to resistance exercise energy expenditure (6,7,20,31,32). Average exercise heart rate was included in the analysis to determine if heart rate data could be used to further improve the estimate of resistance exercise energy expenditure.…”

Influência das variáveis do treinamento contra-resistência sobre o consumo de oxigênio em excesso após o exercício: uma revisão sistemática

“…O critério adotado para estabelecer o dispêndio energético proveniente do ECR também não é padronizado: alguns relatam o gasto calórico total da sessão, que inclui a mensuração do consumo de oxigênio durante o exercício somado ao EPOC (17)(18)(19)(20)(21)(22)(23)(24)(25) , outros apenas mensuram o EPOC (9,14,15,(26)(27)(28) ou nem isso, não considerando o período de recuperação pós-exercício para o cálculo do gasto calórico total da sessão (8,29) . Dentre os métodos de prescrição do treinamento, foram testadas as influências de trabalhos em circuito e em séries consecutivas (16,19,22) , manipulando-se o número de séries (23,24) , a intensidade (16,17,20,26,27) , o intervalo de recuperação entre séries e exercícios (17,19) , a velocidade da contração muscular (14,20,21) e a ordem dos exercícios (15) .…”

Influence of Resistance Training Variables on Excess Postexercise Oxygen Consumption: A Systematic Review

“…Variation in study design (exercises performed, number of repetitions, workload, recovery intervals, and energy assessment protocol) and sample (age, sex, body composition, training level, and diet) may in�uence the EPOC. Hence large variations in the EPOC following RT have been reported [3,[8][9][10][11][12][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”