Q

How does aerobic conditioning impact muscle growth when combined with resistance training?

From 5 years of verified research · Vassili Sandqvist
A

Aerobic conditioning at high volumes can suppress anabolic signaling essential for muscle growth. Elevated cortisol levels from excessive aerobic stress compete with testosterone and IGF-1, which are critical for hypertrophy. Studies show that concurrent training can result in significantly less muscle gain compared to resistance training alone when aerobic volume is high.

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