Which maneuver provides the greatest improvement to G tolerance?

The anti-G straining maneuver (AGSM) is specifically designed to enhance a pilot's ability to tolerate gravitational forces experienced during flight, particularly in high-performance aircraft. The AGSM helps to maintain blood flow to the brain and vital organs during episodes of increased G-forces by using a combination of muscular tension and controlled breathing techniques.

When a pilot performs the AGSM, they create pressure in the chest cavity, which reduces the risk of blood pooling in the lower extremities. This technique involves tensing abdominal and leg muscles while breathing in a controlled manner, effectively counteracting the physiological effects of G-forces. The outcome is a significant increase in G tolerance, allowing pilots to perform maneuvers without losing consciousness due to G-induced hypoxia.

The other options, while beneficial for overall well-being and performance, do not specifically target the immediate needs of G tolerance in the way AGSM does. A meal before flying may improve comfort and energy levels, but it does not directly impact G tolerance. A correctly fitted G-suit helps reduce the effects of G-forces by applying pressure to the body, but it is the AGSM that provides a greater level of improvement in tolerance. Intensive aerobic fitness training contributes to overall physical stamina and resilience, but