Table 1.

Use of the exercise addiction inventory in previously published studies

Study	Year	Sample	Measures	Prevalence (%) of exercise addiction
Griffiths et al. [16]	2005	University students	EAI (English)	3.0
Szabo and Griffiths [18]	2007	Habitual exercisers and sport-science students	EAI (English)	3.6 (habitual exercisers); 6.9 (sport-science undergraduates)
Youngman [24]	2007	Triathletes	EAI (English)	19.9
Villella et al. [30]	2010	High-school students	EAI (Italian)	8.5
Lejoyeux et al. [31]	2012	Fitness-centre attendees	EAI (French)	29.6
Mónok et al. [17]	2012	Nationally representative sample (population aged 18–64 years)	EAI (Hungarian)	0.5 (general population); 3.2 (regular exercisers)
Lichtenstein et al. [20]	2013	Fitness exercisers and football players	EAI (Danish)	5.8
Menczel et al. [32]	2013	Fitness-centre attendees	EAI (Hungarian)	1.8 + 1.8 who exhibited both exercise addiction and eating disorders
Szabo et al. [22]	2013	University students and athletes	EAI (Spanish)	7–17

EAI Exercise Addiction Inventory.