Which physical fitness events are part of the Initial Strength Test (IST)?

The Initial Strength Test (IST) for the United States Marine Corps focuses on assessing the basic physical capabilities necessary for recruits to begin training effectively. The correct choice includes pull-ups, crunches, and a timed 1.5-mile run.

Pull-ups evaluate upper body strength, which is essential for various tasks a Marine may encounter. Crunches measure core strength and endurance, contributing to overall physical fitness and stability. The timed 1.5-mile run assesses cardiovascular endurance, which is critical not only for basic training but also for the physical demands of being a Marine. Successful completion of these events indicates that a recruit possesses the foundational fitness levels necessary for the challenges ahead.

The other options do not align with the components of the IST. For instance, while push-ups and sit-ups are common components of many fitness tests, they are not included in the IST. Additionally, other exercises like squats and deadlifts, while beneficial for strength training, do not feature in the Initial Strength Test process. The IST is specifically designed to focus on those critical areas that ensure recruits are ready for the physical rigor of training and later service.