Synchronized dual-sleeper tri-axial accelerometers placed at chest and hip levels to record kinetic shock wave propagation across mattress surfaces.
Tracked natural sleep postures and motion transfer across 84 co-sleeping couples using high-precision tri-axial accelerometers on pocketed coils versus continuous open-wire coils.
Each barrel-shaped coil compresses independently in its own non-woven fabric sleeve, absorbing localized energy.
Helical wire links connect all springs together, sending kinetic vibration waves across the entire mattress surface.
Individually fabric-wrapped pocket coils reduced partner motion shock transfer by 71% compared to connected wire innersprings, preventing partner awakenings during position changes.
If your partner tosses and turns, do not buy a traditional open-coil innerspring bed. Independent pocket coils or high-density foam transition layers isolate movement right at the source.
Recommended Firmness Target: Medium-Firm with Pocket Coils or Foam
Couples should verify that a mattress uses independent pocket coils and look for motion isolation ratings above 8.5/10.