Predicting Energy Expenditure of an Acute Resistance Exercise Bout in Men and Women

Abstract

The energy expenditure of resistance exercise (RE) is an important consideration for exercise prescription and weight management, yet prediction models are lacking. Purpose This study aimed to develop regression equations to predict energy expenditure (kcal) for RE involving each major muscle group using commonly measured demographic and exercise variables as predictors. Methods Fifty-two healthy, active subjects (27 men, 25 women, age 20–58 yr, height 174.1 ± 10.5 cm, weight 188.7 ± 42.6 kg, V˙O2max 36.8 ± 9.2 mL·kg−1⋅min−1) were strength tested to estimate their one-repetition maximum 1 wk before their experimental RE bout. The experimental RE bout consisted of a warm-up set followed by 2–3 sets (2-min turnover) of 8–12 reps at 60%–70% of predicted one-repetition maximum for leg press, chest press, leg curl, lat pull, leg extension, triceps push down, and biceps curl. Kilocalories were estimated from V˙O2 measured continuously throughout the RE bout via an automated metabolic cart. Total exercise volume (TV) was calculated as sets × reps × weight lifted. Multiple linear regression (stepwise removal) was used to determine the best model (highest adjusted R 2) to predict the kilocalorie consumption of the total workout and of the individual RE lifts. Results The derived regression equation for the net kilocalorie consumption of an RE bout was as follows: total net kilocalorie = 0.874 (height, cm) − 0.596 (age, yr) − 1.016 (fat mass, kg) + 1.638 (lean mass, kg) + 2.461 (TV × 10−3) − 110.742 (R 2 = 0.773, SEE = 28.5 kcal). Significant equations were also derived for individual lifts (R 2 = 0.62 to 0.83). Conclusions Net energy expenditure for a total RE bout and for individual RE can be reasonably estimated in adult men and women using commonly measured demographic and RE variables.

Is an Energy Surplus Required to Maximize Skeletal Muscle Hypertrophy Associated With Resistance Training

“…Numerous studies have attempted to estimate the energy cost of single (67), multiple set (68), and varying speed and intensity (69) resistance exercise sessions, with the net energy cost of an 8 exercise (2 sets of 8–10 repetitions per exercise) hypertrophy program lasting ~30 min being ~300 and 600 kJ, for females and males, respectively (70, 71). These sex differences in net energy expenditure are not evident when normalized for lean mass (72). Given the potential importance of quantifying energy expenditure, estimates of net resistance training energy expenditure are available i.e., total energy expenditure (TEE) minus resting energy expenditure or the specific energy cost of the resistance training alone.…”

“…Mookerjee et al (68) report the energy cost of undertaking 3 sets of 10 reps at 70% of one repetition maximum across five upper body exercises (369.4 ± 174.1 kJ), equating to an energy expenditure of ~0.10–0.12 kJ·kg −1 LBM·min −1 . More recently, a regression equation has been established to estimate resistance training relative energy expenditure based on several variables including stature, age, FM, LBM, and total exercise volume (72), giving practitioners several options to assist with quantifying the energy cost of resistance training. While some of these estimates fail to account for any elevation in energy expenditure post exercise, this effect may only be evident for upwards of 20 min post exercise (72), and thus may be considered negligible, at least following shorter duration resistance training.…”

“…More recently, a regression equation has been established to estimate resistance training relative energy expenditure based on several variables including stature, age, FM, LBM, and total exercise volume (72), giving practitioners several options to assist with quantifying the energy cost of resistance training. While some of these estimates fail to account for any elevation in energy expenditure post exercise, this effect may only be evident for upwards of 20 min post exercise (72), and thus may be considered negligible, at least following shorter duration resistance training. The metabolic implications of resistance training warrant further exploration.…”

Predicting muscular strength using demographics, skeletal dimensions, and body composition measures

“…Our laboratory procedures for prescreening and stress testing, including the criteria required for a valid test, have been previously published. 14 , 15 , 16 …”

Analisis Hubungan Makronutrisi Dengan Daya Tahan Kardiorespiratori, Kecepatan, Dan Kekuatan Otot Tungkai Pada Atlet Lari Amatir

“…7 Sedangkan untuk komponen kecepatan dan kekuatan juga diperlukan menjaga performa yang optimal, seperti yang diungkapkan dalam penelitian sebelumnya bahwa dalam cabang olahraga lari memerlukan kecepatan sehingga kekuatan menjadi prima. 8 Pola asupan makanan setiap hari merupakan hal penting dalam program pembinaan atlet, akan tetapi hal ini belum tertangani dengan baik serta perhitungan kebutuhan energinya belum sesuai dengan porsi atlet. 9 Kebutuhan kalori, makronutrisi, suplemen, merupakan beberapa aspek penting yang perlu dipenuhi setiap atlet.…”