Movement

Question 1

types of muscle contraction:

Answer 1

isometric (static) - The muscle remains under tension and in the same position.
Concentric contraction. The muscle shortens during movement. The movement resists gravity or moves against resistance.
Eccentric contraction - The muscle lengthens during movement. The movement follows gravity.

Question 2

A kinetic chain

Answer 2

A kinetic chain is a series of joints and muscles that work together to perform a motor task (movement).

Question 3

five kinetic chains

Answer 3

anterior, posterior, lateral, intrinsic and deep longitudinal

Question 4

The anterior chain

Answer 4

The anterior chain refers to the muscle groups located on the front of the body, including the chest muscles (pectoralis), hip flexors, abdominal muscles and thigh muscles (quadriceps).

Question 5

The posterior chain

Answer 5

The posterior chain refers to the muscles on the back of the body: calf muscles, hamstrings, gluteal muscles (gluteus) and back muscles (latissimus dorsi and erector spinae).

Question 6

Open and closed kinetic chains

Answer 6

In an open kinetic chain, the proximal (the section closest to the trunk) segment of the dominant joint is fixed, preventing it from moving. The distal (further from the trunk) segment, on the other hand, can move freely. There is more isolation because only one segment is moving. Additionally, the movement occurs in only one plane.

Closed - proximal and distal are fixed, predicted movement, Stability plays an important role, compound exercises like squads, leg press, wall sit, lunge, push-up, deadlift.

Question 7

energy leak

Answer 7

An energy leak refers to the loss of energy during the transfer process within a kinetic chain, reducing the efficiency and power of the movement.