© 2005 BMJ Publishing Group Ltd & British Association of Sport and Exercise Medicine
SHORT REPORT
The exercise addiction inventory: a quick and easy screening tool for health practitioners
Nottingham Trent University, Psychology Division, Nottingham NG1 4BU, UK
Correspondence to:
Correspondence to:
Professor Griffiths
Nottingham Trent University, Psychology Division, Nottingham NG1 4BU, UK; mark.griffiths{at}ntu.ac.uk
Background: Exercise addiction is not routinely screened for probably because available instruments take a long time to administer, their scoring may be complicated, and their interpretation is not always obvious. A new psychometric instrument has been developed that is capable of identifying people affected by, or at risk of, exercise addiction: the exercise addiction inventory (EAI). A preliminary report showed the EAI had good reliability and validity.
Objectives: To test further the EAI’s psychometric properties and show that it would be quick and simple to administer by general practitioners.
Methods: A sample of 200 habitual exercisers were given the EAI and two existing exercise addiction scales (obligatory exercise questionnaire; exercise dependence scale). Two weeks later, another sample of 79 exercisers were administered the EAI to determine the test-retest reliability of the questionnaire.
Results: The original data from the preliminary report were reanalysed to determine the split half correlation of the EAI. This was found to be 0.84 (Guttman split-half coefficient). A correlation between weekly frequency of exercising and EAI scores was also determined, and it was found that the two variables shared 29% of the variance (r2 = 0.29). The test-retest reliability of the scale was found to be very good (0.85).
Conclusions: The EAI is a valid and reliable tool which would be capable of helping general practitioners to quickly and easily identify people affected by, or at risk of, exercise addiction.
Keywords: exercise; addiction; exercise dependence; exercise Addiction Inventory
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Br. J. Sports Med. 2005 39: 346.
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