The difference between hypertrophy and strength is when one is a positive and the other is a negative characteristic.
Hypertrophy is when a muscle is so strong that it can’t be used in an activity that it is used in and it becomes an absolute bestseller. For example, an NFL player with a big chest can’t bench press 400 pounds and is therefore considered a negative hypertrophy. That’s why a really strong football player can’t train for a marathon and get that body shape, strength, and stamina. Strength and hypertrophy are opposite sides of the same coin.