Active Stretching: is a term used to describe a stretch that involves an active contraction of opposing musculature to lengthen a muscle to its end range. Generally, these stretches are held for 2-5 seconds and repeated for 8-15 repetitions.
Active isolated stretching
Hip Flexor: Release and Lengthening
Lumbar Extensor: Release and Lengthening
Shoulder Internal Rotator and Posterior Deltoid: Release and Lengthening