Childhood Obesity Causes & Consequences. On this Page. Childhood obesity is a complex health issue. It occurs when a child is well above the normal or healthy weight for his or her age and height. The causes of excess weight gain in young people are similar to those in adults, including factors such as a person's behavior and genetics.
You're right, here's a quick calculation: Say you bench press a 100kg mass and it travels 1m (apparently you have really long arms). Lifting that weight 1m expends (100kg)(1m)(~10m/sÂ²) = 1000J. Converting to calories and then kilocalories (food calories), this gives you something one the order of 1kcal. Bench pressing 100kg burns about 1kcal.
A study published in the Journal of Strength and Conditioning Research looked at the calorie-burning effects of a 50-minute Body Pump workout. Subjects burned, on average, 265 calories during the workout. The men burned a little more calories (315) compared to the women (214).