Table 2. Changes in post-work fatigue and finger-floor distance and the pelvic motion root mean square between pre- and post-work.

		Condition 1	Condition 2
VAS (cm)*		2.6 ± 1.6	1.9 ± 1.6
FFD (cm)*	Amount of change	−2.5 ± 6.8	2.4 ± 3.6
RMS	Pre-work	33.9 ± 25.7	32.1 ± 22.5
	Post-work	31.4 ± 18.5	37.3 ± 20.8
	Amount of change*	−2.5 ± 16.2	5.2 ± 11.4

Values are mean ± standard deviation. *differences are significant (p<0.05). Condition 1: a standard office chair was used for the work task. Condition 2: a dynamic sitting balance chair was used for the work task. VAS: visual analog scale, FFD: finger-floor distance, RMS: root mean square