| Autor: |
Benedito-Silva, Ana Amélia A.A., Menna-Barreto, Luiz L., Alam, Marilene Farias M.F., Rotenberg, Lúcia L., Moreira, Lúcio Flávio L.F.S., Menezes, Alexandre A.A.L., da Silva, Hilton Pereira H.P., Marques, Nelson N. |
| Předmět: |
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| Zdroj: |
Biological Rhythm Research; Dec98, Vol. 29 Issue 5, p591, 7p |
| Abstrakt: |
Previous application of a Portuguese version of the Horne and Östberg (H&O) questionnaires in Brazil showed a displacement of the distribution of Morningness/Eveningness (M/E) types towards morningness, demanding a reclassification of the score's limits for each of the 5 possible M/E types. Among city, age and sex, city was the only factor determining significant group differences. In the present paper, the same version of the H&O's questionnaire was applied to a distinct population of 260 adults, balanced according to age, sex and city. Data were collected from October to December, to control the effect of the photoperiod. City remains the only factor determining significant group differences (p<0.001). Moreover, there does not appear a coherent latitude trend that could explain differences among cities as a function of photoperiod. Local social habits could probably explain our results, suggesting further investigations of peculiar temporal patterns. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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