Muscle physiologist and professor of kinesiology at McMaster University (Canada), one of the most cited researchers on protein, resistance training and muscle mass.
Studies how diet and training drive muscle protein synthesis, in young athletes and especially in older adults.
Co-authored a large meta-analysis (British Journal of Sports Medicine, 2018) in which extra protein supported muscle gains from resistance training, with little added effect above roughly 1.6 g per kilo of body weight per day.
Showed in older adults that just two weeks of taking far fewer steps already leads to muscle loss and poorer blood sugar control.
An active, level-headed voice on social media and in expert debates on protein needs, plant versus animal protein and supplements.
A recurring theme in his work is ‘anabolic resistance’: older muscle responds less to protein and training, so it needs a stronger stimulus to be maintained.
Takeaway: combine resistance training with enough protein spread across meals, and avoid long stretches of inactivity — especially after sixty.