Table 5 Original and optimal cutoff frequency for each IMU at different transitions during a TUG
Transition | IMU 1 | f cutoff (Hz) | IMU 2 | f cutoff (Hz) | ||
|---|---|---|---|---|---|---|
Org. | Opt. | Org. | Opt. | |||
Sit-to-stand | Trunk a z | 1.57 | -- | Hip θ | 0.69 | -- |
Stand-to-walk out | Trunk a z | 2.44 | -- | |||
Walk out-to-turn | Trunk ωy | 1.32 | -- | Sacrum ωy | 0.98 | --- |
Turn-to-walk in | Sacrum ωy | 0.53 | 3.0 | |||
Walk in-to-turn | Trunk ωy | 1.00 | 3.0 | Sacrum ωy | 0.59 | 3.0 |
Turn-to-stand | Trunk ωy | 0.81 | 2.0 | Sacrum ωy | 1.00 | 2.5 |
Stand-to-sit | Trunk a z | 1.02 | -- | |||