Table 3.

Items and scores of the ad hoc game’s satisfaction questionnaire for the control group (n=5) and intervention group (n=8)^a.

	Items	Control group, mean (SD)	Intervention group, mean (SD)
1	“I can learn self-control techniques better and faster with games like this.”	N/Ab	4 (0.53)
2	“Using games like this would be easy for me.”	4.2 (0.45)	4 (1.07)
3	“Playing to learn techniques is more fun than following a pacer.”	4.6 (0.55)	4.87 (0.35)
4	“I would be able to play this game even if nobody was there to teach me.”	N/A	3 (0.76)
5	“In the future, I would play if I wanted to learn how to control my heart rate.”	4.2 (0.84)	4 (0.76)
6	“The aim of the game was clear the whole time I was playing.”	4 (1.22)	5 (0)
7	“The instructions for functionality were clear.”	N/A	5 (0)
8	“While playing, I understood how to achieve points and how to end the game successfully.”	4.2 (1.30)	4.6 (0.52)
9	“While playing, I was only thinking about the game.”	3.6 (1.14)	4.75 (0.46)
10	“While playing, I forgot everything else around me.”	4 (1)	4.5 (0.53)
11	“While playing, I didn’t realise how much time was passing.”	3.2 (0.84)	4.13 (0.83)
12	“When I did something in the game, I knew if it was right or wrong.”	3.4 (1.82)	4.25 (1.04)
13	“By playing I learned how the techniques affect my heart rate, and how I can modify it.”	N/A	4.13 (0.64)
14	“The game format increased my motivation to continue playing and achieve more bonus points.”	3.4 (0.89)	4.63 (0.52)
15	“A game that applied different breathing techniques would increase my interest in this topic.”	4 (0.71)	4.63 (0.52)
16	“The levels are fun and esthetically pleasing.”	4.2 (0.45)	4.38 (0.74)

^aTotal score: control group—mean 3.87 (SD 0.42); intervention group—mean 4.30 (SD 0.50).

^bN/A: not applicable.