Table 2. Median and range during the morning period (MO), the lunch time (Lunch), the late afternoon period (LA), and the quotient late afternoon/morning (Quotient) for the parameters of trapezius muscle activity (EMG), the parameters of arm acceleration (ACC), and the heart rate (HR).
| Parameter | MO | Lunch | LA | Quotient |
|---|---|---|---|---|
| EMG, rest time | 10.0 (1.4/48.5) | 7.8 (3.0/41.5) | 18.0 (1.8/33.6) | 1.1 (0.3/3.8) |
| EMG, 10th percentile | 4.9 (2.2/17.0) | 5.5 (2.0/11.3) | 4.3 (1.8/11.3) | 0.9 (0.4/3.3) |
| EMG, 50th percentile | 22.4 (5.1/37.8) | 26.0 (5.9/47.5) | 17.5 (6.7/59.0) | 1.1 (0.4/1.9) |
| EMG, 90th percentile | 61.6 (11.7/124.6) | 75.2 (37.4/113.5) | 72.0 (28.9/129.1) | 1.1 (0.6/3.1) |
| ACC, rest time | 33.1 (13.1–48.2) | 25.0 (14.7/54.0) | 37.2 (6.3/54.7) | 1.0 (0.5/1.7) |
| ACC, 10th percentile | 72.0 (70.0/82.0) | 73.0 (68.0/82.0) | 72.0 (70.0/102.0) | 1.0 (1.0/1.2) |
| ACC, 90th percentile | 640 (277/1,105) | 983 (389/2,865) | 644 (322/1,454) | 1.0 (0.7/2.3) |
| HR, 50th percentile | 75.0 (59.0/103.0) | 80.5 (58.0/96.0) | 75.0 (60.0/97.0) | 1.0 (0.9/1.1) |