ABSTRACT
The present investigation analyzes the relationship between one of the principal behavioral factors associated with cardiovascular disease in the adult (the type A behavior pattern) and resting physiological measures (blood pressure and heart rate) in an adolescent sample. Two other psychosocial factors, anger and anxiety, were also analyzed. The study was carried out on 410 adolescents. The results showed that most adolescents who had high resting blood pressure were type-A personalities, showing scores significantly higher in the impatient and hostile components. Results also showed that these subjects scored quite high on anxiety and anger scales when compared to the control group.
Subject(s)
Anger , Anxiety/physiopathology , Anxiety/psychology , Blood Pressure/physiology , Type A Personality , Adolescent , Female , Humans , Male , Psychology, Social , Risk FactorsABSTRACT
This study was designed to address the following objectives: 1) To record the respiratory rate in a population of newborns and infants. 2) To verify the existence of a rhythm in each population group, as well as the organization and maturing process of these rhythms. 3) To determine the possible influence of environmental factors on these rhythms. The study population consisted of the following groups and ages: A) 1 day (21 cases); B) 7 (15 cases); C) 15 (10 cases); D) 30 (17 cases); E) 60 (17 cases); F) 90 (18 cases). Respiratory rate was continuously monitored and recorded, as well as environmental light, noise and temperature. Rhythmometric analysis of the data was done by simple Cosinor test and analysis of variance. The zero amplitude test showed statistically significant differences in the circadian rhythm of groups E and F (p < 0.005). An ultradian rhythm of 3 hours was detected in groups D and F. Environmental factors also showed a circadian rhythm. The appearance of an ultradian rhythm suggest the maturation in a rhythm. To evaluate physiological parameters, reference to time series must be considered.
