Self-recordings of upper arm elevation during cleaning – comparison between analyses using a simplified reference posture and a standard reference posture

Table 6 The group means and the within-subject variations of upper arm elevation and velocity between working days

	Hotel housekeeping (n = 11)				Hotel housekeeping+ (n = 11)
Percentile	Group mean (° or °/s)	Within-subject variation SD (95% CI)	Repeatability coefficient (° or °/s)	ICC	Group mean (° or °/s)	Within-subject variation SD (95% CI)	Repeatability coefficient (° or °/s)	ICC
50^th (°)	29	0.6 (0.3 – 0.9)	1.6	0.98	28	1.7 (0.9 – 2.5)	4.8	0.86
90^th (°)	64	1.5 (0.8 – 2.2)	4.1	0.97	62	4.4 (2.3 – 6.4)	12	0.80
Vel. (°/s)	81	4.7 (2.5 – 6.9)	13	0.93	63	12 (6.4 – 18)	33	0.66

The group mean, the within-subject variation (° or °/s; standard deviation (SD) and 95% confidence intervals (95% CI)), the repeatability coefficient (° or °/s) and the intraclass correlation coefficient (ICC) of upper arm elevations (°; 50th and 90th percentiles of the angular distribution) and median upper arm velocity (°/s; Vel.) between working days for 22 subjects. Self-recordings of hotel housekeeping and hotel housekeeping+. Hotel housekeeping = cleaning hotel rooms and hotel housekeeping+ = cleaning hotel rooms and other tasks such as cleaning corridors. The standard reference posture was used as reference

ISSN: 1471-2474