During a Long Arc Quad (LAQ), what is the starting position of the knee?

During a Long Arc Quad (LAQ), what is the starting position of the knee?

• A. Knee bent while standing.
• B. Knee bent while seated; straighten the knee and raise the foot.
• C. Knee straight while seated.
• D. Knee locked while lying.

Answer: (B)

Long Arc Quad strengthens the quadriceps through a longer range of motion, moving the knee from flexion toward extension. To do this safely and effectively, you start with the knee bent in a seated position so the thigh is supported, then you straighten the knee and raise the foot. This setup allows the knee to pass through a larger arc (roughly from about 90 degrees of flexion to near full extension), engaging the quadriceps throughout that range. Starting with the knee bent while seated and then extending the knee with the foot lifted is what creates that long arc of motion. If you began with the knee straight, you’d be working through only a short arc near extension, which doesn’t provide the same progressive strengthening. Other positions, like standing with the knee bent or lying with the knee locked, don’t align with the standard LAQ setup and won’t produce the same long-arc activation.

Long Arc Quad strengthens the quadriceps through a longer range of motion, moving the knee from flexion toward extension. To do this safely and effectively, you start with the knee bent in a seated position so the thigh is supported, then you straighten the knee and raise the foot. This setup allows the knee to pass through a larger arc (roughly from about 90 degrees of flexion to near full extension), engaging the quadriceps throughout that range.

Starting with the knee bent while seated and then extending the knee with the foot lifted is what creates that long arc of motion. If you began with the knee straight, you’d be working through only a short arc near extension, which doesn’t provide the same progressive strengthening. Other positions, like standing with the knee bent or lying with the knee locked, don’t align with the standard LAQ setup and won’t produce the same long-arc activation.