Chronotype and physical activity of adult population and college students

Abstract

The aim of the study was to identify chronotypes and to
quantified their impact on the physical activity of the adult population
(skDP) and college students (skVS).
The objective of this study was a skDP group (n = 81, age = 50.6
± 11.7 years old; body height = 1.66 ± 0,06 m; body weight = 68.4 ±
12.0 kg; BMI = 24.7 ± 4.1 kg/m2) and skVS group (n = 50, age = 21.0
± 1.4 years old; body height = 1.72 ± 0.08; body weight = 66.6 ± 14.5
kg; BMI = 22.5 ± 3.7 kg/m2). The identification of chronotype was
carried out questionnaire of Smith, Reilly, Midkiff (1989) and by
physical activity questionnaire. The relevant chronotype and the
physical activity of the respondents was identified on the basis of the
achieved score according to the set point scale. To compare the
correlation relationships between variables we used nonparametric
Spearman´s test (rs) and for median dependence we used sme UMann-
Whitney test. Statistical significance was assessed at the level
of significance of variables at a value of p > 0,05.
The results showed that in the skDP group of 53 respondents
leaned towards the morning chronotype (65.4 %), 26 respondents
were neutral chronotype (32.1 %) and 2 respondents leaned towards
the evening chronotype (2.5 %). In the skVS group we identifieds 6
respondents of morning chronotype (12 %), 41 respondents of
neutral chronotype (82 %) and 3 respondents of evening chronotype
(6 %). In the skDP group we found a significant correlation
relationship (rs = 0.23, p < 0.04) between chronotype and the
physical activity. In the skVS group we found an insignificant
negative correlation relationship (rs = -0.05, p > 0.76).
By comparing morning chronotypes and physical activity we
found out an insignificant differences between skDP-r group and
skVS-r group (U = 88.5; Z = -1.778; p > 0.075) with low significance
(r = 0.23. By comparing neutral chronotypes and the physical activity
between the skDP-n and skVS-n group we noticed a significant
differences (U = 376, Z = -2.028, p < 0.043) with low significance (r =
0.25).