Article

Emotional distress and fatigue in coronary heart disease: The Global Mood Scale (GMS)

Centre of Cardiac Rehabilitation, University Hospital of Antwerp, Belgium.
Psychological Medicine (Impact Factor: 5.94). 02/1993; 23(1):111-21. DOI: 10.1017/S0033291700038903
Source: PubMed

ABSTRACT

Evidence indicates that emotional distress has a long-term impact on morbidity and mortality in patients with coronary heart disease (CHD), and that symptoms of depression, fatigue, and reduced energy may identify high-risk patients. This study was designed to: (1) devise a sound and practical measure of emotional distress in CHD patients; (2) examine the relationship between emotional distress and fatigue following CHD; and (3) examine changes in emotional distress as a function of cardiac rehabilitation. A sample of 478 men with CHD (mean age = 57.8 +/- 8.7 y) filled out questionnaires 3-6 weeks following a myocardial infarction (N = 110), bypass surgery (N = 302), or coronary angioplasty (N = 66). Statistical analyses of 56 Dutch mood terms were used to produce the 20-item Global Mood Scale (GMS) which measures negative affect (characterized by fatigue and malaise), as well as positive affect (characterized by energy and sociability), in patients with CHD. The GMS was found to be a reliable scale (alpha > 0.90; r > 0.55 over a 3-month period), and correlations with existing measures of emotional functioning and self-deception indicated its convergent and discriminant validity. Most importantly, fatigue was not related to cardiorespiratory fitness in a subset of 140 patients, but clearly was associated with negative affect. Consistent with the self-efficacy model, scores on the GMS mood scales improved significantly as a function of rehabilitation (P < 0.0001). Although symptoms of emotional distress are easily explained away by situational factors, previous research suggests that failure to recognize the clinical significance of these symptoms in CHD patients may result in the delay of much needed intervention. The current findings suggest that the GMS is a theoretically and psychometrically sound measure of emotional distress in CHD patients, and that this scale is sufficiently sensitive to assess change.

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Available from: Johan Denollet, Feb 06, 2015
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    • "The researchers used the Global Mood Scale (GMS) (Denollet, 1993) for the purposes of measuring mood, specifically positive and negative affect. The GMS is a set of 20 items designed to assess positive and negative affect by asking the patient to self-report " to what extent you have felt this way lately " (Denollet, 1993, p. 121) on target mood states on a 4-point scale. Words such as wearied, listless, and insecure represented negative affect, while words such as active, bright, and sociable represented positive affect. "
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    • "As it was mentioned in the previous sections, this study aims to investigate the impacts of bodily behaviors and certain kinds of sitting postures on EFL learners' moods in a language classroom. To this end, two kinds of instrumentations have been used to collect the data; The GMS (Denollet, 1993), and written self-narratives. In the first place, the results obtained from GMS will be elaborated. "
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    • "Since the negative mood scale and the SCL-90 most probably measure a similar construct, the negative affect scale was omitted in this study. Given a Cronbach's alpha of 0.94, a high internal reliability is expected (Denollet, 1993). Cronbach's alpha varied from 0.696 to 0.769 in the current sample, which is acceptable (George & Mallery, 2003). "
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