The Claim
Standing resistance training with knee extension produces significantly greater hypertrophy in the lateral and medial gastrocnemius muscles compared to seated resistance training with knee flexion.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Doing calf raises while standing up with your knees straight builds more calf muscle than doing them while sitting down with your knees bent. Research shows that keeping your legs straight during the exercise leads to much bigger muscle growth over a few months.
See the scientific wording
Resistance training performed in a standing position with the knee extended produces significantly greater hypertrophy in the lateral and medial gastrocnemius muscles compared to training in a seated position with the knee flexed. In untrained young adults, 12 weeks of standing calf-raises yielded 12.4% and 9.2% increases in lateral and medial gastrocnemius volume, respectively, whereas seated calf-raises resulted in only 1.7% and 0.6% increases, indicating that knee extension during plantarflexion training substantially enhances calf muscle growth.
What the research says
1 studyStudy: Triceps surae muscle hypertrophy is greater after standing versus seated calf-raise training
The study confirms that doing calf raises while standing straight is much better for building calf muscle. This happens because keeping your knees straight stretches the calf muscles more effectively during the exercise.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.