TY - JOUR
T1 - Variability in muscle dysmorphia symptoms: The influence of weight training.
AU - Thomas, L.
AU - Tod, D.
AU - Lavallee, David Edmond
N1 - The study is unique in exploring state-like properties of muscle dysmorphia symptoms in an at-risk population. Theoretically, the study broadens current muscle dysmorphia knowledge which has adopted a trait-like approach. From a method perspective, it is the only experiment to date on muscle dysmorphia (the rest are descriptive studies). It also extends current general body image knowledge that has limited data on daily body image variation (and to date only contains female data).
PY - 2011/3
Y1 - 2011/3
N2 - The purpose of this study was to examine the influence of a weight training session on muscle dysmorphia symptoms in young men who regularly weight trained. Using a within-subjects crossover design, 30 men (mean 6 SD; 20.93 6 2.60 years, 86.87 6 10.59 kg, and 1.76 6 0.01 m) were randomly allocated to 1 of 2 groups, and completed the Muscle Dysmorphic Disorder Inventory twice, once each on 2 separate days. One day 1, group 1 completed the questionnaire after a weight training session and group 2 on a rest day. One day 2, group 1 completed the questionnaire on a rest day and group 2 after a weight training session. The mean score for drive for size was significantly higher on a rest day (18.00) than on a training day (15.87; p = 0.001, d = 1.03). The mean score for appearance intolerance was significantly higher on a rest day (10.10) compared with that on a training day (8.97; p = 0.001, d = 0.69). The mean score for functional impairment was significantly higher on a rest day (10.20) than on a training day (9.47; p = 0.037, d = 0.40). These results provide evidence that muscle dysmorphia symptoms have state-like properties and may be influenced by situational variables. The results may indicate that strength and conditioning specialists and mental health professionals need to observe clients over time and take into account environmental variables before making decisions about the presence or absence of the condition.
AB - The purpose of this study was to examine the influence of a weight training session on muscle dysmorphia symptoms in young men who regularly weight trained. Using a within-subjects crossover design, 30 men (mean 6 SD; 20.93 6 2.60 years, 86.87 6 10.59 kg, and 1.76 6 0.01 m) were randomly allocated to 1 of 2 groups, and completed the Muscle Dysmorphic Disorder Inventory twice, once each on 2 separate days. One day 1, group 1 completed the questionnaire after a weight training session and group 2 on a rest day. One day 2, group 1 completed the questionnaire on a rest day and group 2 after a weight training session. The mean score for drive for size was significantly higher on a rest day (18.00) than on a training day (15.87; p = 0.001, d = 1.03). The mean score for appearance intolerance was significantly higher on a rest day (10.10) compared with that on a training day (8.97; p = 0.001, d = 0.69). The mean score for functional impairment was significantly higher on a rest day (10.20) than on a training day (9.47; p = 0.037, d = 0.40). These results provide evidence that muscle dysmorphia symptoms have state-like properties and may be influenced by situational variables. The results may indicate that strength and conditioning specialists and mental health professionals need to observe clients over time and take into account environmental variables before making decisions about the presence or absence of the condition.
KW - body image disturbance
KW - strength training
KW - psychology
UR - http://hdl.handle.net/2160/8447
U2 - 10.1519/JSC.0b013e3181c70c17
DO - 10.1519/JSC.0b013e3181c70c17
M3 - Article
C2 - 20613653
SN - 1533-4287
VL - 25
SP - 846
EP - 851
JO - Journal of Strength and Conditioning Research
JF - Journal of Strength and Conditioning Research
IS - 3
ER -