Jan Dygryn

Palacký University Olomouc · Faculty of Physical Culture

Background The current negative trend in the physical behavior and lifestyle of the population therefore requires adequate changes in the professional training of physiotherapists. Objectives This study aimed to determine the structure and differences in the weekly physical activity (PA) of Czech physiotherapy students, the use of wearables in phy...

Background The distribution of time across physical activity, sedentary behaviors, and sleep appears to be essential for the management of obesity. However, the impact of reallocating time among these behaviors, collectively known as 24-h movement behaviors, remains underexplored. Objective This study examines the theoretical effects of reallocati...

Background: Childhood overweight and obesity are global health concerns associated with insufficient physical activity (PA), excessive sedentary behaviour (SB), and inadequate sleep. This study aimed to determine whether differences exist in 24 h movement behaviours between Czech non-overweight children and children with overweight/obesity aged 3–1...

This study focuses on assessing family and environmental factors in the context of physical activity levels in children aged 3–8 years across different segments of the school day.

Parent–child patterns in objectively measured movement behaviours were the highlight of this study. A total of 381 families (337 mothers, 256 fathers, 190 daughters, and 191 sons) from 36 randomly selected schools and kindergartens provided valid accelerometer data. Sedentary behaviour and physical activity (PA) were assessed using ActiGraph accele...

Assessing parent–child relationship in sleep behaviours is important for facilitating changes in the sleep guideline compliance in preschool age children. The aim of this study was to examine accelerometer‐measured sleep quantity and quality in families with children aged 3–8 years and investigate the parents’ influence on the child's sleep. The da...

To understand the environmental determinants of physical activity (PA), precise spatial localization is crucial. This cross-sectional study focuses on the spatiotemporal distribution of PA among Czech adolescents (n = 171) using Global Positioning System loggers and accelerometers. The results showed that adolescents spent most of their time in sed...

This study aimed to establish the validity and reliability of a single-beam sensor for assessment of jump performance. Thirty-four male and female university students (age: 21.47 ± 0.98 years; height: 173.97 ± 9.32 cm; weight: 70.03 ± 10.63 kg) executed three trials of countermovement jump (CMJ) and three trials of squat jump (SJ), respectively. CM...

Úvod: Stárnutí naší populace sebou přináší spoustu výzev, které se vztahují na mnoho odvětví ve společnosti. Čím dál tím více rezonuje důraz na zvýšení kvality života osob vyššího věku a udržení nejvyšší možné úrovně jejich nezávislosti. Jedním z velice slibných přístupů se jeví objektivně monitorovaná pravidelná pohybová aktivita, která je “šitá n...

Objectives: The aim of this study was to developed sex- and age-specific normative-referenced percentile values for health-related fitness among 12 to 18 years old Czech youth. Methods: This study included cross-sectional data from 1,173 participants (50.7% boys) collected between 2013 and 2016. Participants were recruited from 32 elementary or sec...

Background. Sleep problems are among the common late side effects of treatment that can occur in survivors of childhood acute lymphoblastic leukemia. At present, the objective evaluation of sleep in the natural environment using actigraphy rather than self-assessment of research participants or the more demanding polysomnography is increasingly com...

Cíl: Hlavním cílem studie je pomocí objektivních přístrojů zhodnotit 24hodinové pohybové chování (tj. spánek, sedavé chování a pohybovou aktivitu) u českých rodin s dětmi ve věku 3–8 a identifikovat faktory snižující riziko výskytu nadměrné tělesné hmotnosti u těchto dětí. Metodika: Výzkumný soubor tvoří reprezentativní vzorek 425 rodin z městskýc...

Background The optimal balance of time spent on daily movement behaviors (“The Goldilocks Day”) associated with childhood obesity remains unknown. Objective To estimate the optimal durations of sleep, sedentary behavior (SB), light physical activity (LPA), and moderate-to-vigorous physical activity (MPVA) associated with excess adiposity in a paed...

Purpose This cross-sectional study aimed to investigate the associations between 24-hour movement behaviours and adiposity and to determine optimal durations for sleep, sedentary behaviour (SB), light physical activity (LPA), and moderate-to-vigorous physical activity (MPVA) for preventing childhood obesity. Methods The study involved 659 Czech ch...

Introduction The development of children’s healthy and active lifestyles, including habit formation for optimal 24-hour movement behaviour, is associated with their family environment. A whole-family study collecting comprehensive data that can evaluate family lifestyle behaviours in different settings in depth has the potential to provide the evid...

Background Twenty-four-hour movement behaviours are gaining attention in the research community. However, no study has addressed how 24-h activity profiles vary between structured and less structured days and whether an unfavourable activity profile is associated with childhood obesity. We aimed to analyse differences between school day and weekend...

Adult survivors of childhood acute lymphoblastic leukemia (ASALL) compose a specific group that faces an increased risk of experiencing late effects of their earlier treatment. Physical activity (PA) may be one of the appropriate means for preventing or minimizing the late effects of treatment. The main purpose of this study is to characterize devi...

Movement behaviour data are compositional in nature, therefore the logratio methodology has been demonstrated appropriate for their statistical analysis. Compositional data can be mapped into the ordinary real space through new sets of variables (orthonormal logratio coordinates) representing balances between the original compositional parts. Geome...

A considerable number of patients with COVID-19 suffer from respiratory problems in the post-acute phase of the disease (the second–third month after disease onset). Individual telerehabilitation and telecoaching are viable, effective options for treating these patients. To treat patients individually, medical staff must have detailed knowledge of...

Purpose Paediatric cancer survivors (PCS) are a high-risk population, who can suffer from late effects of their treatment, such as metabolic syndrome, cardiovascular conditions, secondary tumours. Optimal movement behaviours (e.g., limited sedentary behaviour [SB] and sufficient physical activity [PA]) can reduce the side effects or avoid late effe...

Background /Objective: The second edition of the Czech Republic's Report Card on Physical Activity for Children and Youth was released in 2022. This paper describes the development of the Report Card and presents a comprehensive summary of the main findings. Methods The multi-level search strategy was developed by the national expert panel to iden...

City planning policies influence urban lifestyles, health, and sustainability. We assessed policy frameworks for city planning for 25 cities across 19 lower-middle-income countries, upper-middle-income countries, and high-income countries to identify whether these policies supported the creation of healthy and sustainable cities. We systematically...

An essential characteristic of a healthy and sustainable city is a physically active population. Effective policies for healthy and sustainable cities require evidence-informed quantitative targets. We aimed to identify the minimum thresholds for urban design and transport features associated with two physical activity criteria: at least 80% probab...

Benchmarking and monitoring of urban design and transport features is crucial to achieving local and international health and sustainability goals. However, most urban indicator frameworks use coarse spatial scales that either only allow between-city comparisons, or require expensive, technical, local spatial analyses for within-city comparisons. T...

Benchmarking and monitoring urban design and transport features is critical to achieving local and international health and sustainability goals. However, most urban indicator frameworks use coarse spatial scales that only allow between-city comparisons or require expensive, technical, local spatial analyses for within-city comparisons. This study...

The Czech Republic's 2022 Report Card on Physical Activity for Children and Youth presents a summary of findings on physical activity among Czech children and adolescents based on an analysis of available data collected in 2018 and 2019. A total of 28 data sources provided relevant information on physical activity and its main determinants. The Rep...

PURPOSE OF THE STUDY This study aims to describe and analyze the age differences in the 24-hour movement behavior patterns among a sample of adults and older adults with end-stage knee osteoarthritis referred for total knee arthroplasty (TKA). MATERIAL AND METHODS A total of 86 patients referred for TKA were included in this study. Sleep duration,...

Background: To date, no longitudinal study using a compositional approach has examined sedentary behavior (SB) patterns in relation to adiposity in the pediatric population. Therefore, our aims were to (1) investigate the changes in SB patterns and adiposity from childhood to adolescence, (2) analyze the prospective compositional associations betw...

Background Previous research has demonstrated that paediatric cancer survivors (PCS) have lower sleep quality than their healthy peers. However, the research to date has focused mainly on self-reported data. Therefore, the aim of this cross-sectional study was to characterise selected sleep parameters in PCS using objective monitoring techniques an...

Background Little is known on how context-specific sedentary behaviors (SB) affect adiposity. This study aimed to investigate compositional associations between context-specific SB and adiposity and estimate the differences in adiposity associated with replacing school and out-of-school SB with physical activity (PA). Methods This study included 3...

Background Further research is required to explore the associations between 24-h movement behaviours and health outcomes in the paediatric population. Therefore, this study aimed to examine the associations between novel data-driven 24-h activity metrics and adiposity among children and adolescents. Methods The sample included 382 children (8–13 y...

In order to study the relationship between human physical activity and the design of the built environment, it is important to measure the location of human movement accurately. In this study, we compared an inexpensive GPS receiver (Holux RCV-3000) and a frequently used Garmin Forerunner 35 smart watch, with a device that has been validated and re...

Background: To date, no longitudinal study using a compositional approach has examined sedentary behavior (SB) patterns in relation to adiposity in the pediatric population. Therefore, our aims were to (1) investigate the changes in SB patterns and adiposity from childhood to adolescence, (2) analyze the prospective compositional associations betwe...

Background: To date, no longitudinal study using a compositional approach has examined sedentary behavior (SB) patterns in relation to adiposity in the pediatric population. Therefore, our aims were to (1) investigate the changes in SB patterns and adiposity from childhood to adolescence, (2) analyze the prospective compositional associations betwe...

Introduction Only international studies can provide the full variability of built environments and accurately estimate effect sizes of relations between contrasting environments and health-related outcomes. The aims of the International Physical Activity and Environment Study of Adolescents (IPEN Adolescent) are to estimate the strength, shape and...

The study aimed to adapt the standardized Physical Activity Questionnaire for Older Children (PAQ-C) into the Czech language and assess its psychometric properties. A forwards-and-backwards translation method was carried out to prepare the Czech PAQ-C version (PAQ-C/CZ), followed by adjustments based on socio-cultural aspects. In the next phase, pa...

Background There are limited studies on the prevalence of adherence to the combined guidelines for physical activity (PA), sedentary behavior, and sleep in children and adolescents. Moreover, little is known about correlates of adherence to the guidelines. Therefore, the main aim of this study is to examine the prevalence and identify the correlate...

Background: To examine compositional associations between short sleep duration and sedentary behavior (SB), light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) among children and adolescents. Methods: Multi-day 24-h data on sleep, SB, LPA and MVPA were collected using accelerometers among 343 children (8-13 years old)...

Background: There are limited studies on the prevalence of adherence to the combined guidelines for physical activity (PA), sedentary behavior, and sleep in children and adolescents. Moreover, little is known about correlates of adherence to the guidelines. Therefore, the main aim of this study is to examine the prevalence and identify the correlat...

Background: There are limited studies on the prevalence of adherence to the combined guidelines for physical activity (PA), sedentary behavior, and sleep in children and adolescents. Moreover, little is known about correlates of adherence to the guidelines. Therefore, the main aim of this study is to examine the prevalence and identify the correlat...

Abstract Background Little is known about the combined effect of physical activity (PA), recreational screen time (ST), and sleep in preventing childhood obesity. Hence, this study aimed to analyze the associations between meeting the PA, ST, and sleep recommendations within the 24-hour movement guidelines and adiposity indicators among children an...

Background: Between-person differences in sedentary patterns should be considered to understand the role of sedentary behavior (SB) in the development of childhood obesity. This study took a novel approach based on compositional data analysis to examine associations between SB patterns and adiposity and investigate differences in adiposity associa...

Telerehabilitation contributes to the sustainability prolongation of pulmonary rehabilitation benefits Chronic obstructive pulmonary disease (COPD) is the most frequent one among chronic pulmonary diseases. It is a cause of death in 3 500 patients in the Czech Republic. One of the factors which possibly contribute to the health status worsening is...

The adoption of active travel (AT) habits in adolescence, supported by positive emotions, increases the chances of a lifelong positive attitude towards AT. The aim of this study was to assess the associations between active travel and well-being (WB), and to estimate the share of AT in weekly physical activity (PA) and its contribution to meeting t...

Background: In addition to genetic factors, overweight and obesity are determined by lifestyle. However, the setting of children's and adolescents' lifestyle is not completely the result of their decisions. Parents shape the habits of their children and play the role of a model. Therefore, there is likely to be an association between parental chara...

This study aimed to describe sedentary behaviour in detail and assess the associations with adiposity in older adult women. Data from 314 community-dwelling women (mean age 66.6±6.5 years) from Czech Republic, Poland, and Slovakia were analyzed. Fat mass percentage was used as an indicator of adiposity, measured by bioelectrical impedance analysis....

This study aimed to describe sedentary behaviour in detail and assess its association with adiposity in older adult women. Data from 314 community-dwelling women (mean age 66.6 ± 6.5 years) from Czech Republic, Poland, and Slovakia were analyzed. Fat mass percentage was used as an indicator of adiposity, measured by bioelectrical impedance analysis...

Background: Older adults are considered the most sedentary and the most fragile group in our society. Understanding how seasonal and meteorological factors impact the sedentary behaviour (SB) is important for developing of strategies to improve their health. Therefore, the purposes of the present study were to examine: (1) potential spring-autumn v...

Objective Identifying where adolescents are physically active may help define relevant domains for effective PA promotion and improved understanding of the relations between PA and the built environment. This study aimed to identify how Czech adolescents allocate their active and sedentary time among different spatial domains. Methods 171 adolescen...

Background: Physical activity (PA) is one of the major factors influencing human health. An important group of determinants are elements forming the built environment. For a proper understanding of relationships between the built environment and PA, we need to measure PA in space. Objective: This study aims to verify the accuracy of the Holux RCV-3...

Background: Regular physical activity (PA) is associated with numerous health benefits. However, the decreasing level of PA and increasing screen-time among Czech children and youth has been well documented in the last two decades. To build effective intervention and prevention programs, it is necessary to review all available sources of evidence....

infographic executive summary of the Czech Republic’s 2018 Report Card on Physical Activity for Children and Youth (DOI: 10.13140/RG.2.2.28551.85921).

The Report Card was prepared as a part of the international project titled Global Matrix 3.0 that was conducted under auspices of the Active Healthy Kids Global Alliance organization. The report summarises and analyses current findings on physical activity (PA) of Czech children and youth. It contains a wide range of evidence-based findings and rec...

Hlavním cílem výzkumné studie je odhadnout sílu asociací mezi pohybovou aktivitou, tělesnou zdatností a zastavěným prostředím u 11–19letých adolescentů žijících ve vybraných městech České republiky. Výzkum z let 2013–2016 zahrnuje celkem 1 745 participantů (895 chlapců). Pohybová aktivita byla zjišťována prostřednictvím dotazníku IPEN Adolescent a...

Background: This study aimed to describe the frequency and duration of sedentary bouts and assess the bidirectional cross-sectional associations between these characteristics and adiposity in elderly women. Methods: Data from 314 elderly community-dwelling women (mean age 66.6±6.5 years) from Czech Republic, Poland, and Slovakia were analyzed. Meas...

Physical activity (PA) is an important factor affecting the physical and mental health of humans. Development of cheap and small GPS devices has made it possible the determine the spatial location of physical activity, which is a field that has received more attention the past decade. However, GPS devices differ in spatial accuracy. The aim of this...

Active commuting to school or work can have a significant effect on the overall level of physical activity and consequently on human health. To promote active commuting, previous research studies have attempted to identify the common environmental characteristics of travel routes mostly using GPS receivers. Although it is becoming easier to obtain...

Although there is an increasing awareness of the suitability of using compositional data methodology in public health research, classical methods of statistical analysis have been primarily used so far. The present study aims to illustrate the potential of robust statistics to model movement behaviour using Czech adolescent data. We investigated: (...

Purpose: Activity trackers are useful tools for physical activity promotion in adolescents, but robust validity evaluations have not been done under free-living conditions. This study evaluated the validity of the Garmin Vívofit 1 (G1) and Garmin Vívofit 3 (G3) in different settings and contexts. Methods: The participants (girls: 52%, age: 15.9...

This study is the first to use compositional data analysis to investigate movement behaviors of elderly women and their relationships with fat mass percentage (FM%). The focus of the study is on the associations of time reallocations from sedentary behavior (SB) to light physical activity (LIPA) or moderate-to-vigorous physical activity (MVPA) with...

Background: Previous studies have confirmed the relationship between the built environment and the physical activity of the adult population. However, research to address this relationship in children and adolescents is limited. World-recognized patterns of behavioral change neglect physical fitness and do not sufficiently reflect the national and...

Východiska: Pohybová aktivita (PA) je velmi důležitým faktorem ovlivňujícím lidské zdraví. Aktivní docházka/ dojížďka (AD) do školy může napomoci zvýšit celkový počet kroků za den a tím snáze plnit zdravotní doporučení pro PA. Pro zlepšení propagace a zvýšení využití AD je důležité co nejlépe identifikovat faktory ovlivňující volbu této formy trans...

Physical activity (PA) is one of the factors that positively affect health. Recent studies confirm that the type of the built environment can influence the physical activity behaviour. This relationship can be examined by a variety of methods (questionnaires, pedometers and accelerometers). At present, use of geographic information systems (GIS) an...

The aim of this study was to compare physical activity and health-related fitness of Czech adolescents living in different types of built environments. A total of 269 adolescents (122 boys and 147 girls) aged 12–19 years participated in this study. The data collection was conducted by the Czech IPEN working group between November 2013 and June 2015...

There is no general consensus regarding which accelerometer cut-off point (CoP) is most acceptable to estimate the time spent in moderate-to-vigorous physical activity (MVPA) in children and choice of an appropriate CoP primarily remains a subjective decision. Therefore, this study aimed to analyze the influence of CoP selection on the mean MVPA an...

Original data. This file containing original data. (SAV)