Table 1.

Level of effect of the different scales for the wearability of a system [18].

			Level of Effect
	Metric	Units	Low	Moderate	Large	Very Large	Extreme
Energy cost	Relative perceived exertion	Borg CR-10 score	0–1	2–3	4–5	6–7	8–10
Biomechanical	Posture	REBA score + body map	1	2–3	4–7	8–10	11–15
	Localised pain and discomfort	Borg CR-10 score	0–1	2–3	4–5	6–7	8–10
Comfort	General wearable	CRS score	0–4	5–8	9–12	13–16	17–20