Table 2.

VAS-Stress means over conditions

	Day 1	Day 2	Day 3
AaLplus
30 min before	3.76 ± 2.53	3.06 ± 2.55	2.49 ± 2.38
Start of session	3.96 ± 2.27	3.12 ± 2.50	1.93 ± 1.75
End of session	1.77 ± 1.89	1.66 ± 1.46	1.29 ± 1.44
End of recovery phase	1.00 ± 1.35	1.20 ± 1.22	1.28 ± 1.72
Sonography
30 min before	4.88 ± 1.77	4.29 ± 1.75	3.01 ± 1.96
Start of session	6.25 ± 1.50	4.97 ± 1.79	3.80 ± 2.04
End of session	3.08 ± 2.05	2.66 ± 2.18	1.95 ± 1.69
End of recovery phase	1.54 ± 1.45	1.51 ± 1.40	0.75 ± 1.00

Note. n_AaL = 36, n_Sono = 24. Stress level means and standard deviations by tutor type, session, and measurement point