How To Prevent Muscle Loss When Dieting (Science Explained)

This entry is part [part not set] of 48 in the series Science Explained Series by Jeff Nippard

Introduction

In this article, we will discuss four strategies to prevent muscle loss while on a caloric deficit, based on scientific literature. Before diving into the strategies, it is essential to understand why muscle loss occurs when dieting. Muscle gain or loss is determined by the balance between muscle protein synthesis and muscle protein breakdown. To prevent muscle loss during a diet, we need to address the factors that cause this imbalance.

Four Causes of Muscle Loss on a Diet

  1. Suppressed rates of muscle protein synthesis: The process of adding “bricks” to the “wall” of your muscle slows down.
  2. Greater rates of muscle protein breakdown: The process of removing “bricks” from the “wall” of your muscle speeds up.
  3. Increased use of protein as fuel: The more protein you burn as energy, the less protein is available for building muscle.
  4. Losing strength at the gym: As you get leaner, your strength may decrease, leading to less tension on the muscle and reduced muscle retention.

Four Science-Based Strategies for Minimizing Muscle Loss on a Cut

  1. Maintain your strength levels at the gym: Focus on maintaining your strength on heavy compound lifts and working mostly in the 6 to 12 rep zone. This will help maintain muscle mass during a cut.
  2. Diet more slowly: Research suggests that a slower rate of weight loss is better at preserving muscle. Adjust your rate of weight loss based on your starting body fat and gradually decrease it as you get leaner.
  3. Increase your protein intake: Consuming around 1 gram of protein per pound of body weight can help preserve lean body mass during a caloric deficit. However, going beyond 2 grams per pound has not been shown to provide additional benefits.
  4. Avoid excessive cardio: Perform the lowest number of cardio sessions necessary to reduce body fat without interfering with strength training. Aim for no more than one to two HIIT sessions and four to five low-intensity steady-state sessions per week.

Conclusion

To prevent muscle loss during a caloric deficit, follow these four science-based strategies: Maintain your strength levels at the gym, diet more slowly, increase your protein intake, and avoid excessive cardio. By implementing these methods, you can minimize muscle loss and achieve a lean, muscular physique.

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