Table 2.

Bond and Lader visual analogue scales (VAS)

Code	Item	Pre sample	Post sample	Paired sample (pre)	Paired sample (post)
Alertness	Composite score	69.3 ± 14.7	58.8 ± 18.9	71.4 ± 14.3	59.0 ± 18.7
VASBL01	Alert–Drowsy	29.2 ± 18.1	42.4 ± 22.1	26.3 ± 16.9	42.0 ± 21.7
VASBL03	Strong–Feeble	30.5 ± 16.6	39.3 ± 19.9	28.2 ± 15.4	39.3 ± 19.4
VASBL04	Confused–Clear Headed	70.6 ± 17.3	59.6 ± 22.0	72.9 ± 16.2	59.6 ± 21.6
VASBL05	Well-coordinated–Clumsy	26.5 ± 16.0	37.0 ± 20.3	24.6 ± 15.2	36.4 ± 19.6
VASBL06	Lethargic–Energetic	59.8 ± 19.3	45.9 ± 25.5	62.1 ± 18.9	46.3 ± 25.5
VASBL09	Mentally slow–quick-Witted	65.7 ± 19.0	54.2 ± 23.6	67.6 ± 18.2	53.7 ± 23.2
VASBL11	Attentive–Dreamy	32.0 ± 18.3	44.1 ± 22.0	30.2 ± 18.5	43.7 ± 22.0
VASBL12	Incompetent–Proficient	75.4 ± 15.1	66.1 ± 18.8	77.3 ± 14.1	65.9 ± 18.6
VASBL15	Interested–Bored	29.6 ± 17.7	33.6 ± 18.4	27.7 ± 16.8	33.6 ± 17.8
Contentedness	Composite score	72.0 ± 14.4	69.9 ± 15.5	73.7 ± 13.9	70.1 ± 15.3
VASBL07	Contented–Discontented	27.6 ± 16.3	28.3 ± 17.3	25.4 ± 15.4	27.9 ± 17.1
VASBL08	Troubled–Tranquil	70.7 ± 16.6	69.4 ± 19.3	72.1 ± 16.1	70.1 ± 18.3
VASBL13	Happy–Sad	26.0 ± 17.7	27.4 ± 16.8	24.3 ± 16.8	26.9 ± 16.2
VASBL14	Antagonistic–Amicable	74.0 ± 17.0	71.1 ± 17.4	75.5 ± 16.2	71.3 ± 17.0
VASBL16	Withdrawn–Gregarious	68.9 ± 18.0	64.5 ± 20.3	70.6 ± 17.7	63.8 ± 20.3
Calmness	Composite score	68.6 ± 17.3	68.6 ± 16.7	68.9 ± 17.9	69.8 ± 15.6
VASBL02	Calm–Excited	30.1 ± 19.5	28.9 ± 18.9	30.3 ± 20.6	27.9 ± 17.5
VASBL10	Tense–Relaxed	67.2 ± 18.8	66.1 ± 19.1	68.2 ± 18.9	67.5 ± 17.7

Score range is 0–100 from left to right, e.g., Alert (0)–Drowsy (100). The fomulea to calculate the composite alertness, contentedness, and calmness scores is provided in the Additional file 1: A