For a pre-natal client in her second trimester, what specific modification to the Reformer Hundred on the back is essential to avoid supine hypotensive syndrome while still engaging the deep abdominals?

The essential modification to the Reformer Hundred for a second-trimester prenatal client is to completely avoid the supine, or flat-on-the-back, position. Instead, the exercise must be performed in a semi-reclined or inclined position. This is typically achieved by propping the client's upper body and head with a wedge or several pillows, elevating their torso by at least 30 to 45 degrees, or by having them sit upright on the Reformer carriage. This specific modification is crucial to prevent supine hypotensive syndrome, a condition prevalent in the second and third trimesters of pregnancy. Supine hypotensive syndrome occurs when the ....