Veggies sitting on a table in Phoenix, AZ

GLP-1 Injections and Muscle Mass Preservation

1. Why Muscle Preservation Matters on Your GLP‑1 Journey

Rapid weight loss without preserving lean muscle can slow metabolism, reduce strength, and undermine long‑term results. In Scottsdale & Mesa-where active lifestyles and outdoor pursuits are a way of life-maintaining muscle mass ensures you stay strong, energetic, and ready for the next hike or pickleball match.

2. How GLP‑1 Therapy Affects Muscle

Meals prepped and set out on a wooden table

 

GLP‑1 agonists primarily target appetite and glucose metabolism, but can also modestly increase the proportion of fat loss versus muscle when paired with proper nutrition and exercise. Clinical studies indicate that combining semaglutide with resistance training preserves more lean mass compared to medication alone¹.

 

 

3. Protein & Nutrition Strategies for Muscle Retention

Adequate protein intake is critical: aim for 1.2–1.6 g per kg of body weight daily, spaced across meals to maximize muscle protein synthesis. Include:

  • Lean proteins (chicken, turkey, fish) 
  • Plant sources (lentils, quinoa, tofu) 
  • Dairy or alternatives (Greek yogurt, cottage cheese) 

Timing your protein-especially post‑workout, helps muscles recover and grow. Our registered dietitians craft East Valley‑adapted meal plans to fit your GLP‑1 dosing schedule and appetite changes.

4. Resistance Training & Activity Recommendations

Metabolic testing on a treadmill

Strength training 2–3 times per week is the single best way to signal your body to hold onto muscle. Focus on:

  • Compound movements (squats, deadlifts, push‑ups) 
  • Progressive overload, gradually increasing weights or resistance 
  • Recovery days to prevent overtraining in the Arizona heat 

Adding light aerobic activities-walking, cycling, or swimming-supports cardiovascular health without sacrificing muscle.

5. Monitoring Progress & Expert Support at New Results

At New Results Medical Weight Loss, our multidisciplinary team ensures you lose fat -not muscle.

  1. Baseline body composition scans with bioelectrical impedance analysis. 
  2. Tailored nutrition & workout plans, updated monthly based on progress. 
  3. Regular strength assessments and lab monitoring to track muscle markers. 
  4. Ongoing coaching in clinic or virtual, to adjust protocols as needed. 

Ready to protect your muscle and optimize your GLP‑1 results? Contact us today for a free consultation and treatment estimate, and let our Scottsdale & Mesa experts design a program that keeps you strong, healthy, and confident.