Kaja Kastelic

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Verified

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• PhD
• Research Associate at University of Primorska

Background Physical activity, sedentary behaviour, and sleep (i.e., 24-hour movement behaviours) are among key determinants of health and well-being. However, epidemiological studies that investigate these behaviours while accounting for their co-dependent nature are still scarce. This article describes the protocol of a population-based study that...

Students spend a considerable amount of time in school. This study aimed to determine the prevalence of musculoskeletal pain and the association between the pain and suitability of school furniture and daily activities among primary school and university students. A total of 238 primary and university students participated in the study. The adapted...

Background ‘Lack of time’ is consistently the most commonly reported barrier to regular exercise participation. However, this term insufficiently captures the complex and multidimensional nature of time. Recognizing the need for a more comprehensive analysis of ‘lack of time’ as a barrier to exercise, in this presentation the authors introduce the...

Purpose Police officers (PO) are exposed to several health-related risk factors including shift work, extended work schedules, dangerous, and traumatic events. Although police work is often seen as active, PO spend the majority of worktime sitting in offices or driving cars. The prevalence of sedentary behaviour (SB) and physical activity (PA) amon...

Background Measurement of self-reported 24-hour movement behaviours (i.e. physical activity, sedentary behaviour, and sleep) is important for research, policy, and practice. However, studies showed that self-reported estimates are substantially biased, and that bias usually differs by individual’s characteristics (e.g. age, sex, body mass index). T...

Purpose Physical activity, sedentary behaviour, and sleep (i.e. 24-hour movement behaviours) are important determinants of health and well-being. Given their perfect co-dependency, there has been a recent recognition that it is sound to address them in a combination. Therefore, the purpose of our ongoing (2023–2025) national project GIB24 is to imp...

Background and purpose: Physical activity, sedentary behaviour, and sleep (i.e. 24-hour movement behaviours) have an important impact on health and well-being. Awareness of their co-dependence has recently led to the recognition that it is sound to examine and address them in combination. The purpose of this presentation is to introduce our ongoing...

Background Time spent in sleep, sedentary behaviour (SB), and physical activity are exhaustive and mutually exclusive parts of a 24-h day that need to be considered in a combination. The aim of this study was to identify validated self-reported tools for assessment of movement behaviours across the whole 24-h day, and to review their attributes and...

A perceived ‘lack of time’ is consistently the most commonly reported barrier to exercise. However, the term fails to capture the multifaceted nature of time-related factors. Recognising the need for a more comprehensive analysis of ‘lack of time’ as a barrier to exercise, the aim of this study was to develop the exercise participation explained in...

Revija/journal: Šport : revija za teoretična in praktična vprašanja športa. 2024, letn. 72, št. 1/2, str. 15-23. IZVLEČEK: Mnogi otroci in mladostniki so izdatno sedentarni tako v šoli kot tudi izven šole. Študije kažejo, da visoka količina sedentarno preživetega časa predstavlja dejavnik tveganja za zdravje in zdrav razvoj otrok in mladostnikov. N...

Revija/Journal: Šport : revija za teoretična in praktična vprašanja športa. 2024, letn. 72, št. 1/2, str. 150-161. IZVLEČEK: V okviru mednarodnega programa CINDI smo že leta 1990 začeli s spremljanjem z zdravjem povezanega vedenjskega sloga odraslih prebivalcev Slovenije. Izvirno uporabljen anketni vprašalnik se je skozi leta nekoliko spreminjal....

Revija / Journal: Šport : revija za teoretična in praktična vprašanja športa (številka 3-4, letnik 2023) IZVLEČEK: Telesna dejavnost, sedentarno vedenje in spanje (tj. 24-urno gibalno vedenje) pomembno vplivajo na zdravje in dobro počutje študentov. Z nastankom 24-urne paradigme se je pojavila potreba po vprašalnikih, ki vrednotijo gibalno vedenje...

Measurement of the time spent in sleep, sedentary behaviour, and physical activity across the full 24-h day (i.e. 24-h movement behaviours) is essential for time-use research among adolescents. However, self-reported questionnaires for the assessment of 24-h movement behaviours are scarce. The aim of this study was to examine the validity and relia...

Background According to recently published 24-hour movement guidelines, adults should spend: ≥150 minutes/week in moderate-to-vigorous physical activity (MVPA); <8 hours/day in sedentary behaviour (SB); and 7–9 hours/day sleeping. Objective We explored the association between meeting these recommendations and low back pain (LBP)—the most common mu...

Objectives The aim of this cross-sectional study was to explore the associations of reallocating time between moderate- to vigorous-intensity physical activity (MVPA), light-intensity physical activity (LPA), sedentary behaviour (SB) and sleep with occurrence, frequency and intensity of low back pain (LBP) among adults using compositional isotempor...

Time spent in physical activity, sedentary behavior, and sleep collectively impact health of older adults. There is a need for valid self-reported methods for the assessment of movement behaviors across the entire 24-hr day. The aim of this study was to explore the validity of the German version of Daily Activity Behaviours Questionnaire (DABQ), th...

Studies showed that engaging in physical activities play a very important role in preserving physical abilities among older adults. While engaging in physical exercise has been consistently shown to have favourable impact, less is known about the impact of free-living physical activity, sedentary behaviour and/or sleep duration (i.e., 24-h movement...

Revija/Journal: Šport : revija za teoretična in praktična vprašanja športa (številka 3-4, letnik 2022) IZVLEČEK: Angleški izraz »sedentary behaviour« je opredeljen kot vsakršno vedenje v času budnosti, ki ga zaznamuje nizka poraba energije in pri katerem je posameznik v sedečem položaju, se naslanja ali leži. V slovenski strokovni literaturi je m...

Background: Movement behaviours (i.e. physical activity, sedentary behaviour, and sleep) collectively impact health and wellbeing. Nowadays, we face a high prevalence of unhealthy movement behaviours, including a lack of physical activity and sleep, which emerged in our industrialisation and urbanisation periods. To develop evidence-based intervent...

Introduction: Time spent in various movement and non-movement behaviours collectively impact the development, health, and well-being of adolescents. Modern guidelines recommend that adolescents should sleep for 8 to 10 hours per night, limit recreational screen time to no more than 2 hours per day and accumulate at least 60 minutes of moderate-vigo...

Background and Aim: At the beginning of the year 2022, Sedentary Behaviour Research Network, the international association for research on sedentary behaviour, released the first international recommendations on school-related sedentary behaviour for children and youth. These recommendations are based on the best available evidence, expert consensu...

Background Back pain is the most common musculoskeletal symptom. Several risk/protective factors, including sedentary behaviour, physical activity and sleep, have been proposed. Research has typically examined these time-use behaviours in isolation, ignoring the compositional nature of time-use data. The aim of this study was to determine the relat...

Background: Adequate school furniture is important to prevent musculoskeletal discomfort among students. Objective: The aim of the study was to assess the suitability of school furniture compared to body dimensions of students. Methods: A cross-sectional study included a total of 442 students from primary school, secondary school, and universi...

The COVID-19 measures have unfavourably affected the movement behaviours of youth. The aim of this study was to explore the impact of online-schooling during COVID-19 on device-measured sleep (SL), sedentary behaviour (SB), light physical activity (LPA), and moderate-vigorous physical activity (MVPA) among high school students. A total of 51 studen...

Sleep, sedentary behaviour (SB), and physical activity are among key behavioural determinants of health. There is a need to evaluate questionnaires that capture movement behaviours across the full 24-h day. The aim of this study was to examine the measurement properties of the Daily Activity Behaviours Questionnaire (DABQ), a novel questionnaire (w...

Background and objectives: It has previously been shown that the International Fitness Scale (IFIS) is a reliable and valid instrument when used in numerous regions and subgroups, but it remains to be determined whether the IFIS is a reliable instrument for use with Chinese children and adolescents. If the reliability of the IFIS can be verified,...

The purpose of this review was to gather studies that reported on the impact of COVID-19 restrictive measures on physical activity and sedentary behavior in children and adolescents, and to present key findings. The search for articles was performed in three databases of scientific literature: PubMed, Scopus, and Web of Science. We included article...

Background The Canadian 24-Hour Movement Guidelines for Adults was released in 2020. There is a dearth of evidence on the association between adherence to the 24 h movement guidelines and health indicators. This study aims to (a) explore the associations between potential correlates and meeting the 24 h movement guidelines using a sample of Chinese...

Wrist-worn consumer-grade activity trackers are popular devices, developed mainly for personal use. This study aimed to explore the validity, reliability and sensitivity to change of movement behaviors metrics from three activity trackers (Polar Vantage M, Garmin Vivoactive 4s and Garmin Vivosport) in controlled and free-living conditions when worn...

Introduction. Physical activity (PA), sedentary behaviour (SB) and sleep collectively affect mental and physical health of older adults. According to the novel 24-hour movement guidelines, older adults should engage in at least 150 minutes of moderate-to-vigorous PA per week, limit their sedentary time to 8 hours per day, and sleep between 7 and 8...

See paper : Validity, Reliability and Sensitivity to Change of Three Consumer-Grade Activity Trackers in Controlled and Free-Living Conditions among Older Adults

Introduction: Thigh-worn accelerometery is an emerging choice for 24-h movement behaviours assessment, yet methods to assess moderate-to-vigorous physical activity (MVPA) needs further development. The aim of this pilot study was to establish activity cut-points for moderate (MPA) and vigorous physical activity (VPA) for activPAL4, and to test its...

The aim of this study was to develop a questionnaire to assess perceived school furniture suitability.

Background: Prolonged sitting has been identified as a risk factor for spinal health. Ergonomic advices suggest preserving natural spinal curvatures while sitting and using a backrest. Assessment of spinal posture while back supported sitting is not possible using traditional posture evaluation techniques (e.g., 3D optical motion detection system),...

Suitable school furniture is important to ensure students maintain proper posture, diminish risks for musculoskeletal discomfort and pain, and to promote students' well-being in the classroom. When assessing the suitability of school furniture, characteristics like student's posture and dimensional compatibility can be measured objectively. However...

Abstract Background Several countries have recently issued 24-h movement guidelines that include quantitative recommendations for moderate-to-vigorous physical activity (MVPA), sedentary behaviour (SB), and sleep. This study explored the associations of meeting the 24-h movement guidelines with stress and self-rated health among adults, and whether...

School furniture has been recognised as a potential risk factor for musculoskeletal pain among primary school pupils. The aim of this study was to assess student-furniture mismatch and to determine the association between unsuitable school furniture and musculoskeletal pain among Slovenian pupils. Firstly, pupils’ body dimensions were measured, and...

Background: Several countries have recently issued 24-hour movement guidelines for adults. From a public health perspective, it is important to explore the health benefits of meeting the 24-hour movement guidelines. This study, therefore, aimed to explore the associations of meeting the 24-hour movement guidelines with stress and self-rated health...

Studies based on western population have indicated that muscle-strengthening exercise (MSE) has positive roles against mental disorders, but little is known about that in Chinese adults. This study, thus, aimed to explore the association between MSE and depression in Chinese university students (aged 18-24 years). A convenient sample of 1794 univer...

BACKGROUND Wrist worn consumer-grade activity trackers are popular devices, developed mainly for personal use, but with the potential to be used also for clinical and research purposes. OBJECTIVE The objective of this study was to explore the validity, reliability and sensitivity to change of movement behaviours metrics from three popular activity...

This chapter is about health benefits of physical activity for older adults, prevalence and correlates of physical activity and sedentary behaviour, interventions, and physical activity recommendations for older adults.

Standing desks and physical activity breaks can counteract the negative consequences of sedentarism at school. However, the implementation of these strategies should not restrict the pedagogical process. The aim of this study was to assess teachers’ perspectives on strategies to reduce sedentary behavior (SB) of students in the classroom. An online...

Introduction: A recent shift to the 24-hour movement paradigm is being widely accepted by the researchers and (inter)national authorities who develop physical activity guidelines. The new paradigm is based on the fact, that time spent in physical activity, sedentary behaviour and sleep add up to 24-hour day and that for the optimal health all day m...

Introduction: Police officers are exposed to shift and night work, encounter tragic events, and often confront threats and time pressures. The work of police officers is also specific because of the authorisation by which they can act against other people. All this can be reflected in increased stress. The aim of this study was to assess the preval...

Introduction: Police officers have a variable work schedule which includes shift and night work. While some police officers engage in predominantly sedentary work, others perform work that requires a higher level of physical activity. Shift work is associated with increased risk of adopting an unhealthy lifestyle, such as physical inactivity and un...

Introduction: Considering the amount of time students spend in the classroom predominantly in a sitting position, school furniture plays a key role in maintaining and promoting good posture. The aim of the study was to evaluate the mismatch between the existing classroom furniture and students’ anthropometric measures. Methods: To assess the misma...

Introduction: Low back pain (LBP) is common in children and adolescents. Several risk factors have been proposed, including prolonged sitting. The aim of this study was to review the literature on association between sitting/sedentary time or specific sedentary behaviour and LBP in children and adolescents. Methods: A literature search was conducte...

Objective: Shift work is a well-known risk factor for several non-communicable diseases. However, little is known about how shift work affects daily activity behaviors and dietary pattern. The aim of this study was to test the effect of work shift on time spent sleeping, in sedentary behavior and physical activity and on dietary pattern. Methods: F...

Prolonged sitting is widely recognized as a risk factor for low back disorders and low back pain. Several harmful mechanisms have been proposed, affecting intervertebral discs, posterior lumbo-pelvic ligaments and fasciae, and muscles of the lumbo-pelvic-hip complex. Sitting position is accompanied with some degree of lumbar flexion while in the (s...

Self-reports are commonly used tools for obtaining sedentary behaviors. The aim of our study was to assess agreement between two self-reports of sedentary time and a gold standard sedentary time objective monitor. A worksite sample (n = 42) completed the Slovenian version of the Global Physical Activity Questionnaire (GPAQ), the Slovenian version o...

Introduction: Prolonged sitting is often proposed as a risk factor for low back pain development. The purpose of this study was to evaluate the acute effect of full time office work on sensorimotor trunk functions. Methods: Seventeen healthy office workers participated in the study. Maximal lumbar flexion range of motion, anticipatory postural a...

Sedentary behavior is a well-known risk factor for several non-communicable diseases. The aim of our study was to investigate sedentary time and physical activity in crane operators and office workers within work and non-work context. Fourteen crane operators and 15 office workers wore activPAL continuously for up to five consecutive working days t...

Prolonged sitting is widely accepted as a risk factor for development and/or persistence of low back pain (LBP), with several etiological mechanisms being proposed so far. Cumulative intervertebral disc injuries were often mentioned in relation to LBP and sitting in older literature. Recent studies more frequently report on posterior lumbo-pelvic l...

Low back pain is a common symptom among office workers. Several mechanisms, through which prolonged sitting can contribute to the development of back pain, have been identified. The aim of this study was to test acute effects of an eight-hour office work on sensory-motor functions underlying spine stability. 17 healthy office workers participated i...

INTRODUCTION: Low back pain (LBP) is a very common symptom among office workers. Several mechanisms, through which prolonged sitting can contribute to development or persistence of LBP, have been identified. In sitting position, lumbar part of the spine and hips are in semi-flexed position. That can cause muscle tightness and ligament stretch, chan...

This chapter is about sitting biomechanics, biological mechanisms about how prolonged sitting affects spinal structures, and sitting ergonomics.