Kinematic variables correlated with undulatory frequency, ω,and/or amplitude of midline curvature κ0 as determined by linear regression*
| Dependent variable . | Equation . | r2 . | adj. r2 . | P . |
|---|---|---|---|---|
| Lateral tail amplitude | y0,30=0.2272-0.0086ω | 0.255 | 0.220 | 0.014 |
| Pitch angle amplitude | α0=0.198+0.0189κ0 | 0.332 | 0.300 | 0.004 |
| Phase lag, curvature | δy-κ=-0.0522+0.0118ω | 0.242 | 0.206 | 0.017 |
| Phase lag, curvature | δy-κ=-0.0736+0.0074κ0 | 0.190 | 0.151 | 0.038 |
| Dependent variable . | Equation . | r2 . | adj. r2 . | P . |
|---|---|---|---|---|
| Lateral tail amplitude | y0,30=0.2272-0.0086ω | 0.255 | 0.220 | 0.014 |
| Pitch angle amplitude | α0=0.198+0.0189κ0 | 0.332 | 0.300 | 0.004 |
| Phase lag, curvature | δy-κ=-0.0522+0.0118ω | 0.242 | 0.206 | 0.017 |
| Phase lag, curvature | δy-κ=-0.0736+0.0074κ0 | 0.190 | 0.151 | 0.038 |
| . | Mean . | . | S.D. . | . | ||
|---|---|---|---|---|---|---|
| Phase lag, pitch angle | δy-α=-0.25T | ±0.067 | ||||
| Curvature half-wavelength | λκ/2=0.427L | ±0.0422 | ||||
| Lateral body amplitude | y0,11=0.065L | ±0.0232 | ||||
| . | Mean . | . | S.D. . | . | ||
|---|---|---|---|---|---|---|
| Phase lag, pitch angle | δy-α=-0.25T | ±0.067 | ||||
| Curvature half-wavelength | λκ/2=0.427L | ±0.0422 | ||||
| Lateral body amplitude | y0,11=0.065L | ±0.0232 | ||||
adj., adjusted.
T=tailbeat period, L=body length.
P<0.05 are significant and indicated as such in bold, N=23.
Means are given when no significant linear regression was found.
See also Fig. 3.