Time under contraction is not directly measured in a typical weight training program. Most people really don't even think about the number of seconds a given muscle is forced to work. Indirectly, ...

What Are Eccentric and Concentric Contractions? Eccentric contractions occur when a muscle lengthens under load, such as lowering a dumbbell during a biceps curl. Concentric contractions happen when ...

Squeezing in a solid workout can be a challenge for time-poor fitness enthusiasts, but lately we’re seeing exercise scientists really drill into what the most efficient workouts might look like. A ...