Built around independent training arms, this module supports at least 250 exercises. The arms can be used on their own or combined with cable pulleys and other exercise accessories.

With many exercises, the load can be picked up and returned when the arms are in the top position, allowing the exercise to begin and end at the top. This follows the same principle as training with dumbbells fitted with cables, improving comfort and safety.

Examples of exercises you can perform:

• Weighted squats – lower-body training for the thighs and glutes, with shoulder pads for added comfort.
• Crunches – abdominal flexion for the rectus abdominis.
• Rows – pulling movement for the upper back.
• Arm raises – shoulder training through a controlled range of motion.
• Pressing movements – controlled movements targeting the chest.
• Arm curls – elbow flexion for the biceps.

Muscle groups: abs, thighs, glutes, upper back, shoulders, chest, biceps, and triceps.

With the arms connected, the module also supports assisted pull-ups with reduced bodyweight load and specialized movements that can be useful for American football training.

Upgrade path: JD-X is an expanded version of Option JA. If you start with Option JA, you can later add the upgrade to convert it to JD-X.