Table 1.
Overnight sleep duration and HRV measures following green or built walks.
| Outcome Variable | Green Walk (n = 12) | Built Walk (n = 12) | Mean Difference (95% CI) | Main Effect (Condition) | Effect Size (Condition) | *Adj Main Effect | * Adj Effect Size |
|---|---|---|---|---|---|---|---|
| Sleep Duration (min) | 425.0 (77.1) | 445.0 (57.7) | −20 (−33 to −73) | F = 0.909 (p = 0.368) | ηp2 = 0.102 | F = 0.284 (p = 0.610) | ηp2 = 0.039 |
| RR (ms) | 1018.2 (181.5) | 1017.2 (189.7) | −0.9 (−73.0 to 71.2) | F = 0.001 (p = 0.976) | ηp2 = 0.000 | F = 0.043 (p = 0.840) | ηp2 = 0.004 |
| SDNN (ms) | 43.6 (21.0) | 37.0 (19.5) | 6.6 (0.0 to 13.1) | F = 5.47 (p = 0.039) | ηp2 = 0.332 | F = 2.37 (p = 0.155) | ηp2 = 0.192 |
| rMSSD (ms) | 47.4 (27.3) | 38.8 (25.0) | 8.6 (−0.1 to 17.3) | F = 5.36 (p = 0.041) | ηp2 = 0.328 | F = 3.40 (p = 0.095) | ηp2 = 0.254 |
| SD1 (ms) | 33.8 (19.4) | 27.7 (17.8) | 6.1 (0.0 to 12.3) | F = 5.36 (p = 0.041) | ηp2 = 0.328 | F = 3.35 (p = 0.097) | ηp2 = 0.251 |
Values and mean difference are the unadjusted means (SD). Main effect (condition) from repeated measures ANOVA. * Adjusted main effect from repeated measures ANOVA controlling for order. Mean Difference (95% CI) are derived from estimated marginal means. SDNN-Standard deviation of RR interval; rMSSD -root mean squared of successive differences and SD1—SD from Poincare plot.