Document Detail

Evaluation of behavioral states among morning and evening active healthy individuals.
MedLine Citation:
PMID:  12131925     Owner:  NLM     Status:  MEDLINE    
The Horne-Ostberg questionnaire partly covers some factors that may be important determinants of peak time and characterize patterns of behavior. We conducted a study for the evaluation of self-reported behavioral states (hunger sensation, availability for study, physical exercise, solving daily problems, and time preferences) as expressions of underlying cyclic activity. Three hundred and eighteen community subjects without history of medical, psychiatric, or sleep disorders were evaluated in a cross-sectional design. A self-report about daily highest level of activity was used to categorize individuals into morning, evening, and indifferently active. Time-related behavioral states were evaluated with 23 visual analog questions. The responses to most analogic questions were significantly different between morning and evening active subjects. Logistic regression analysis identified a group of behaviors more strongly associated with the self-reported activity pattern (common wake up time, highest subjective fatigue, as well as wake up, bedtime, exercise and study preferences). These findings suggested that the patterns of activity presented by normal adults were related to specific common behavioral characteristics that may contribute to peak time.
M P Hidalgo; A Camozzato; L Cardoso; C Preussler; C E Nunes; R Tavares; M S Posser; M L F Chaves
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Brazilian journal of medical and biological research = Revista brasileira de pesquisas médicas e biológicas / Sociedade Brasileira de Biofísica ... [et al.]     Volume:  35     ISSN:  0100-879X     ISO Abbreviation:  Braz. J. Med. Biol. Res.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-07-19     Completed Date:  2002-11-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8112917     Medline TA:  Braz J Med Biol Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  837-42     Citation Subset:  IM    
Curso de Pós-Graduação de Medicina Interna, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.
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MeSH Terms
Analysis of Variance
Biological Clocks
Circadian Rhythm / physiology*
Cross-Sectional Studies
Exercise / physiology
Logistic Models

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