Strength training and weight loss: what science really says

Does strength training actually burn calories?

Contrary to popular belief, strength training is a powerful calorie-burning tool. An intense 45-minute session can burn between 200 and 400 calories depending on intensity and the lifter's muscle mass. But the real advantage lies in the afterburn effect, also known as EPOC (Excess Post-Exercise Oxygen Consumption): your metabolism stays elevated for 24 to 48 hours after your session.

Studies published in the Journal of Strength and Conditioning Research show that resistance training sessions with moderate to heavy loads and short rest periods produce a significantly higher EPOC than steady-state cardio.

Muscle mass and basal metabolic rate

Each additional kilogram of muscle increases your basal metabolic rate by about 13 calories per day at rest. That may seem modest, but over a year, 5 kg of extra muscle represents nearly 24,000 additional calories burned, which is roughly equivalent to 3 kg of fat. Strength training is therefore a long-term investment in your body composition.

Traditional cardio, on the other hand, does not stimulate muscle growth. Worse, excessive cardio can even lead to lean mass loss, which slows metabolism and makes weight loss harder to maintain. Researchers call this metabolic adaptation.

What the studies actually show

A 2021 meta-analysis published in Sports Medicine compared the effects of cardio alone, strength training alone, and a combination of both on fat loss. The results are clear:

• Cardio alone reduces total weight but causes significant muscle loss
• Strength training alone preserves muscle mass and reduces body fat
• The combination of strength training plus moderate cardio delivers the best results for body composition

The ideal approach is to prioritize 3 to 4 strength sessions per week and add 2 moderate cardio sessions (brisk walking, cycling, swimming). This is exactly the kind of program you can follow by booking your slot at Ma Salle, your private gym in Paris.

Practical tips to optimize weight loss

To maximize results, combine strength training with a smart nutrition plan. A slight caloric deficit of 300 to 500 calories per day is enough to lose fat without sacrificing muscle. Keep protein intake high (1.6 to 2.2 g per kg of body weight) to support muscle protein synthesis.

Focus on compound exercises such as squats, deadlifts, and bench press. These movements recruit large muscle groups and generate high energy expenditure. Finally, track your progress with body composition measurements rather than just the number on the scale.

At Ma Salle in Paris, you can focus entirely on your training in a private space, free from distractions, for optimal results.