Does the chronotype distribution vary between different level football leagues? Insights gained from Czech elite football players.

Chronotype refer to individuals' time-of-day preferences for activities, which can be classified as "morning types = (M-types)", "evening types = (E-types)", and "neither types (N-types)". The primary aim of this study was to compare the chronotype distribution of Czech First League (1L) and Czech National Football League (2L) male elite football players, which was divided into two secondary aims: (i) statistically identify and compare the number (presence) of particular chronotypes in 1L, and (ii) statistically identify and compare the number (presence) of particular chronotypes in 2L. The present cross-sectional study employed a self-reported standardized questionnaire, the Composite Scale of Morningness, to study the chronotype distribution among the male elite football players.

Evaluation of the performance of clinical predictors in estimating the probability of pulmonary tuberculosis among smear-negative cases in Northern Ethiopia: a cross-sectional study.

Objectives: To evaluate the performance of the predictors in estimating the probability of pulmonary tuberculosis (PTB) when all versus only significant variables are combined into a decision model (1) among all clinical suspects and (2) among smear-negative cases based on the results of culture tests.

Design: A cross-sectional study.

Setting: Two public referral hospitals in Tigray, Ethiopia.

Relationship between chronotype preference and choice of sport participation and time of day of training: insights gained from the ninth all African university game players.

The purpose of this study was to assess the chronotype orientations of the ninth all African university game players hosted by Mekelle University, Mekelle, Ethiopia, 2-6 July 2018. The present cross-sectional study employed a self-reported demographic, training time, and Horne and Ostberg Morningness-Eveningness Questionnaires (MEQ). Training time and chronotype orientations of 174 (126 males and 48 females) participants, mean age 21.

Effects of altitude on chronotype orientations in relation to cardiorespiratory and hematological quantities of college students in Ethiopia.

Background: The mechanism by which Ethiopians adapt to altitude is quite unique compared to other Highlanders with respect to increased oxygen saturation of hemoglobin. Although the effects of altitude on cardiorespiratory and hematological quantities on athletics performances are well known, but there is little information about its underlying effect on chronotype orientations.

Methods: In this cross-sectional study 60 male college students with mean age 20±1.

Chronotype preferences of college students from varied altitude backgrounds in Ethiopia.

The purpose of this study was to compare chronotype preferences of college students from high- and low-altitude backgrounds living in a tropical setting of Ethiopia. Chronotype (morningness-eveningness) is a preference for a given time of day for physical or mental activities. The present cross-sectional study employed Horne and Osteberg Morningness-Eveningness Questionnaires to evaluate chronotype preferences.