MSE and MAE expressed as kcal/min and a percentage of predicted PAEE for the GC and IC
| Activity | MSE (kcal/min) | Mean percentage error (%) | MAE (kcal/min) | Mean absolute percentage error (%) | ||||
|---|---|---|---|---|---|---|---|---|
| GC | IC | GC | IC | GC | IC | GC | IC | |
| Resting | 0.08±0.18 | 0.05±0.10 | – | – | 0.08±0.18 | 0.05±0.10 | – | – |
| Folding clothes | −0.30±0.75 | −0.46±0.17 | −19.1±78.9 | −43.1±16.2 | 0.68±0.39 | 0.46±0.17 | 66.3±43.5 | 43.1±16.2 |
| 3 km/h | −0.08±0.98 | −0.16±0.41 | −4.3±52.6 | −8.5±21.5 | 0.80±0.52 | 0.30±0.31 | 43.1±28.0 | 16.2±16.0 |
| 4 km/h | 0.34±1.43 | −0.10±0.49 | 12.9±53.8 | −3.8±20.7 | 1.07±0.97 | 0.32±0.37 | 42.4±33.9 | 13.4±15.8 |
| 5 km/h | 0.83±2.37 | −0.14±0.41 | 24.1±65.6 | −4.4±12.7 | 1.83±1.66 | 0.34±0.25 | 56.5±38.6 | 10.4±8.1 |
| 6 km/h | 1.18±2.65 | −0.43±0.45 | 26.8±62.0 | −9.5±12.0 | 2.23±1.79 | 0.50±0.37 | 54.7±37.5 | 12.0±9.3 |
| 7 km/h | 0.77±2.68 | −0.55±0.71 | 19.1±59.3 | −11.0±15.3 | 2.15±1.68 | 0.68±0.57 | 48.6±36.6 | 14.2±12.0 |
| 4 km/h (+8% of body mass) | 0.80±1.89 | 0.04±0.52 | 28.4±63.4 | 3.1±21.6 | 1.50±1.36 | 0.37±0.36 | 56.8±37.7 | 15.6±14.7 |
| 4 km/h (2% gradient) | 0.93±2.27 | −0.08±0.52 | 23.3±60.1 | −4.1±16.3 | 1.62±1.81 | 0.40±0.32 | 47.5±42.2 | 12.5±10.8 |
| 4 km/h (3% gradient) | 0.58±2.34 | −0.50±0.51 | 19.7±72.6 | 11.9±12.7 | 1.74±1.60 | 0.56±0.44 | 50.4±54.1 | 13.6±10.6 |
| All Activities | 0.51±1.90 | −0.22±0.49 | 14.6±63.2 | −10.1±20.7 | 1.35±1.44 | 0.39±0.37 | 51.4±38.9 | 16.8±15.8 |
The MAE and MSE statistics for all activities grouped together are presented in bold.
GC, group calibration; IC, individual heart rate calibration; MAE, mean absolute error; MSE, mean signed error; PAEE, physical activity energy expenditure.