Daniel Kiikka

The length-tension relationship describes the amount of force produced by a sarcomere in relation to its length.

The force-velocity relationship describes the relationship between the speed and force of muscle contraction, expressed as power.

Muscle actions can be divided into three main categories: eccentric (muscle lengthening), concentric (muscle shortening) and isometric (muscle length remains the same).

Skeletal muscle is one of the three muscle tissues found in humans. They have a striated appearance and attach to bones by tendons. Together, they produce all voluntary movements…

Training variables like volume, load, rest, frequency, exercise choice, exercise order, and movement velocity have a tremendous impact on long-term training adaptations. See what…

Muscle contraction occurs when actin and myosin filaments slide past each other. Thus, resulting in the shortening of a sarcomere.

The neural adaptations of strength training refers to improvements in motor unit recruitment and rate coding. Click here to learn more!

Muscle satellite cells are stem cells found between the external lamina and sarcolemma. They play a crucial role in muscle fiber regeneration.

The push/pull/legs split refers to dividing your weekly training into push (chest, shoulders, triceps), pull (back, biceps), and leg (quads, glutes, hamstrings, calves) days. It…

The size principle means that motor units (motor neuron and muscle fibers innervated by it) are activated in an order from smallest to largest.