Supine Runner (TRX / Suspension Trainer)

Level
intermediate
Force
static
Mechanic
compound
Equipment
trx
Category
strength
Secondary Muscles

Core exercise performed on your back with alternating knee drives. Creates a running motion while maintaining plank position.

Instructions

  1. Lie on your back with your head near the anchor point.
  2. Place your feet in the TRX foot cradles.
  3. Position your hands on the ground, extending your arms and lifting your hips into a plank position.
  4. Drive one knee toward your chest in a running motion.
  5. Return that knee to the extended position and drive the opposite knee toward your chest.
  6. Maintain a steady running rhythm while keeping your hips level.

Tips

  • Keep your hips level and avoid swaying side to side.
  • Maintain a steady pace and controlled breathing.
  • Engage your core to prevent lower back strain.
  • Keep your hands shoulder-width apart for stability.

Recommended starting values

Sensible novice starting points for each goal, for a lifter aged 25–40. Scale down for smaller frames or older lifters. Treat the first set of any session as a discovery set.

Goal Sets Reps
Gain strength 3 15 reps
Build muscle 3 18 reps
Build endurance 3 25 reps