Ear-worn inertial measurement units

1. Ear-worn inertial measurement units are associated with peak upward acceleration in humans (Systematic bias: sit-to-stand 1.05 m/s2 (95% CI 0.93–1.18); sit-to-walk 1.30 m/s2 (95% CI 1.14–1.45)).

   “Peak upward acceleration similarly showed systematic biases of 1.05 (95% CI 0.93-1.18) and 1.30 ms−2 (95% CI 1.14-1.45) for sit-to-stand and sit-to-walk, respectively.”

   HumansEar-derived measurement compared with optical reference during sit-to-stand and sit-to-walkn = 62

   Ear-Worn Inertial Measurement of Sit-to-Stand and Sit-to-Walk Movements: Algorithm Development and Validation

   Journal of medical Internet research·13 Oct 2026

More on Peak upward acceleration

1. Ear-worn inertial measurement units are associated with peak power in humans (Systematic bias: sit-to-stand 172 W (95% CI 153–190); sit-to-walk 191 W (95% CI 168–215)).

   “systematic biases of 172 (95% CI 153-190) W and 191 (95% CI 168-215) W indicated that ear-derived and seventh cervical vertebra-derived power were not interchangeable.”

   HumansEar-derived versus seventh cervical vertebra-derived measurements during sit-to-stand and sit-to-walkn = 62

   Ear-Worn Inertial Measurement of Sit-to-Stand and Sit-to-Walk Movements: Algorithm Development and Validation

   Journal of medical Internet research·13 Oct 2026

More on Peak power

1. Ear-worn inertial measurement units are associated with sit-to-walk movement duration in humans (Mean difference 0.06 seconds (SD 0.17); 95% limits of agreement −0.28 to 0.39 seconds).

   “The mean overall movement duration differed by 0.09 (SD 0.12) seconds for sit-to-stand and 0.06 (SD 0.17) seconds for sit-to-walk”

   HumansEar-derived measurement compared with optical motion capture referencen = 62

   Ear-Worn Inertial Measurement of Sit-to-Stand and Sit-to-Walk Movements: Algorithm Development and Validation

   Journal of medical Internet research·13 Oct 2026

More on Sit-to-walk movement duration

1. Ear-worn inertial measurement units are associated with sit-to-stand movement duration in humans (Mean difference 0.09 seconds (SD 0.12); 95% limits of agreement −0.14 to 0.32 seconds).

   “The mean overall movement duration differed by 0.09 (SD 0.12) seconds for sit-to-stand and 0.06 (SD 0.17) seconds for sit-to-walk”

   HumansEar-derived measurement compared with optical motion capture referencen = 62

   Ear-Worn Inertial Measurement of Sit-to-Stand and Sit-to-Walk Movements: Algorithm Development and Validation

   Journal of medical Internet research·13 Oct 2026

More on Sit-to-stand movement duration