A great source for Yoga Postures by Mark Giubarelli.
Translation: Warrior 1 (Variation)
Also High Crescent Pose
This variation of Warrior 1 is easier on the lower back. This is because the lower back is not twisted. It is however harder to balance in this pose. Take the feet closer together to prevent balance being too much of a challenge.
Enter a deeper posture as confidence, co-ordination and strength grow.
The hands can be in a number of different positions.
Take the legs closer together if knee injury is present or balance is challenging.
This yoga posture strengthens the quadriceps (rectus femoris, vastus lateralis, Vastus medialis and the vastus intermedius) on the leading leg and stretches them on the leg that is behind the body.
Hip abductor stabilizers such as the gluteus medius and gluteus minimus, the adductors magnus, longus, and brevis, the gracilis, and the pectineus all become toned.
Vinyasa Yoga postures to transition from and to: