Final answer:
The muscle targeted for SMR if the roller is placed along the front and slightly lateral part of the upper thigh is the vastus lateralis, which is one of the quadriceps muscles.
Step-by-step explanation:
The muscle that would be targeted for SMR (self-myofascial release) if you placed the roller along the front and slightly lateral part of the upper thigh is the vastus lateralis, which is one of the quadriceps muscles located on the lateral aspect of the thigh.
The vastus lateralis muscle is responsible for extending the leg and helps in stabilizing the knee joint. By using a roller on this muscle, you can release tension and tightness, reduce muscle soreness, and improve mobility in the area.
When performing SMR on the vastus lateralis, it's important to start off gradually and apply moderate pressure using the roller. Roll slowly along the muscle, focusing on any areas of tightness or discomfort. Spend about 1-2 minutes on each leg for an effective release.