Darryn S. Willoughby is a Professor of health, human performance and recreation and directs Baylor University’s Exercise and Biochemical Nutrition Laboratory. He studies molecular physiology and biochemistry of exercise and nutrition, cellular and molecular physiology of muscle, exercises and sport nutrition, neuromuscular exercise physiology and strength training and sport conditioning.

After receiving his bachelor’s degree in health and fitness from Tarleton State University in 1986, he earned his Master of Education degree there in 1989. He earned his doctoral degree in neuromuscular exercise physiology and biochemistry from Texas A&M University in 1993.

Prof. Willoughby specifically researches the effects of training and nutritional intervention on the physiological, biochemical and molecular mechanisms regulating skeletal muscle strength, hypertrophy and atrophy in athletes. He has published articles on his findings in Journal of Nutrition and Metabolism, International Journal of Sport Nutrition and Exercise Metabolism and Journal of Medicinal Food.

Prof. Willoughby is a certified sport nutritionist, exercise physiologist, nutrition specialist and strength and conditioning specialist. He is a fellow of the International Society of Sports Nutrition, the American Society of Exercise Physiologists and the American College of Sports Medicine. He has been on the Baylor faculty since 2002. He is also a GBO professional bodybuilder competing at the master’s level.

In this podcast Darryn and I discuss muscle physiology. Some of the things we discuss are:

(12:50): How does a muscle grow?

(23:45): What role does satellite cells have on the remodelling process of skeletal muscle?

(33:40): What are androgen receptors and how do they affect the potential for muscle growth?

(47:30): What is myostatin and how does it regulate the amount of muscle you can build?

(01:30:30): What is the take home message?