JOINT ACTION: KNEE EXTENSION

WHEN MUSCLE COLOR TURNS BRIGHT RED, THAT REPRESENTS A CONCENTRIC CONTRACTION.

JOINT ACTION: EXTERNAL / LATERAL HIP ROTATION

WHEN MUSCLE COLOR TURNS BRIGHT RED, THAT REPRESENTS A CONCENTRIC CONTRACTION.

JOINT ACTION: HIP EXTENSION - EXTERNAL HIP ROTATION

WHEN MUSCLE COLOR TURNS BRIGHT RED, THAT REPRESENTS A CONCENTRIC CONTRACTION.

HIP FLEXION (REVERSE ACTION), WHEN MUSCLE COLOR TURNS BRIGHT RED, THAT REPRESENTS A CONCENTRIC CONTRACTION.

JOINT ACTION: ELBOW EXTENSION - SHOULDER EXTENSION

WHEN MUSCLE COLOR TURNS BRIGHT RED, THAT REPRESENTS A CONCENTRIC CONTRACTION.