Background: Walking represents a major component of physical activity (PA), and its restriction could degrade autonomy and quality of life. An important objective for preventive and/or rehabilitative strategies to improve balance and gait in normal and pathological aging conditions is to focus on physical activity. Activity monitors have recently been getting increasingly popular and represent a modern solution to measure-and communicate-PA notably in terms of steps/day. These activity monitors are well-suited for various populations as they can be worn on a variety of locations on the body, including the wrist and the hip (i.e., the two most common locations), in an undifferentiated way according to the manufacturer's instruction. The aim of this study was hence to verify potential differences in step count (SC) by comparing this parameter assessed using wrist- and hip-worn activity trackers over a 24-h period in free-living conditions in young and older adults. Methods: Young adults (n = 22) and older adults (n = 22) voluntarily participated in this study. They were required to wear two commercially-available Actigraph GT3X+ activity monitors simultaneously at two locations recommended by the manufacturer, i.e., one positioned around the wrist and one above the hip, over a 24-h period in free-living conditions. The manufacturer's software was used to obtain estimates of the SC. Results: For both groups, the wrist-worn activity tracker provided significantly higher SC than the hip-worn activity tracker did. For both placements on the body, older adults exhibited significantly lower SC than young adults. Interestingly, for both young and older participants, the difference between both measurements tended to decrease for longer distances. Conclusion: The different estimations of the step count provided by the comparison between two identical Actigraph GT3x on the wrist or the hip during the 24-h observation period in free-living conditions in young and older adults strongly suggests that caution is needed when using total step per day values as an outcome to quantify walking behavior. Probably we can suggest the same caution across implementation of different activity Tracker.

• Klíčová slova
• activity tracker, free-living, older, physical activity, step count,
• Publikační typ
• časopisecké články MeSH

INTRODUCTION AND OBJECTIVE: Weekly physical activity (PA) in adolescents is significantly correlated with the educational programme and school environment, where the basis of healthy work habits and a healthy lifestyle is laid. The aim of the study was to identify the differences in the trend and the structure of the weekly step count in adolescent boys and girls in the context of the Polish school environment. MATERIAL AND METHODS: A total of 930 boys and 1,354 girls aged 15-19 years from 64 secondary schools in the Katowice region participated. The research was conducted between 2011-2018. For the objective monitoring of weekly PA, Yamax Digiwalker SW-700 pedometers were used. RESULTS: Between 2011-2014 and 2015-2018, no significant differences were observed in step counts on an average week day, school day, or weekend day. This means that the level of PA, expressed as daily step count, did not decrease between the two 4-year periods. On average, boys performed 10,799 steps/day, while girls performed 10,130 steps/day. The recommendation of 11,000 steps/day was achieved by 42.2% of boys and 35.3% of girls. A significant decrease by 8.6 percentage points in the achievement of 11,000 steps/day between the two 4-year periods was observed only in boys. CONCLUSIONS: It is positive that in the 8-year monitoring of PA, there was no significant decrease in the average steps/day for Polish boys and girls. However, most boys and girls did not meet the 11,000 steps/day recommendation. Both boys and girls were most physically active on Friday and least physically active on Sunday.

• Klíčová slova
• adolescent behaviour, environment, healthy lifestyle, physical activity, recommendation,
• MeSH
• cvičení * MeSH
• lidé MeSH
• mladiství MeSH
• sexuální faktory MeSH
• školy MeSH
• studenti statistika a číselné údaje   MeSH
• věkové faktory MeSH
• Check Tag
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Polsko MeSH

• Klíčová slova
• EOSINOPHILS *, EXERCISE TEST *, EXERTION *, LEUKOCYTE COUNT *,
• MeSH
• eozinofily * MeSH
• lidé MeSH
• počet leukocytů * MeSH
• pracovní zátěž * MeSH
• tělesná námaha * MeSH
• zátěžový test * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

The pedometer is a widely used research tool for measuring the level and extent of physical activity (PA) within population subgroups. The sample used in this study was drawn from a population of university students to examine the influence of the monitoring interval and alternate starting days on step-count activity patterns. The study was part of a national project during 2008-2010. Eligible subjects (641) were selected from a sample of 906 university students. The students wore pedometers continuously for 7 days excluding time for sleep and personal hygiene. Steps per day were logged on record sheets by each student. Data gathering spanned an entire week, and the results were sorted by alternate starting days, by activity for an entire week, by activity for only the weekdays of the one-week monitoring interval and for the two-day weekend. The statistical analysis included ANOVA, intra-class correlation (ICC) analysis, and regression analysis. The ICC analysis suggested that monitoring starting on Monday (ICC = 0.71; 95%CI (0.61-0.79)), Tuesday (ICC = 0.67; 95%CI (0.59-0.75)) or Thursday (ICC = 0.68; 95%CI (0.55-0.79)) improved reliability. The results of regression analysis also indicated that any starting day except Sunday is satisfactory as long as a minimum of four days of monitoring are used.

• MeSH
• ambulantní monitorování přístrojové vybavení   MeSH
• chůze statistika a číselné údaje   MeSH
• dospělí MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• regresní analýza MeSH
• sběr dat přístrojové vybavení   metody   MeSH
• studenti MeSH
• univerzity MeSH
• výzkumný projekt * MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

BACKGROUND: The main aim of this study was to quantify the associations between parents' and children's physical activity by age, gender, and the day of the week on the basis of a pedometer-measured step count (SC). METHODS: The sample comprised data from 4-to 16-year-old children and their parents from the Czech Republic (1102 mother-child dyads and 693 father-child dyads). The parents and their children wore the Yamax SW200 pedometer during seven days of monitoring. RESULTS: The strongest SC association was found between mothers and daughters aged 4-7.9 years on weekdays (rp = 0.402; p < 0.01) and at weekends (rp = 0.577; p < 0.01). In children aged 8-16, the parent-child association is gender-specific, with the father-son relationship being dominant, especially at weekends (weekend SC: fathers-sons8-11.9 y rp = 0.416, p < 0.01; fathers-sons12-16 y rp = 0.443, p < 0.01). An increase of 1000 steps in the fathers (mothers) is associated with an increase of more than 400 (200) steps in their sons (daughters). CONCLUSIONS: This study confirms a strong parent-child SC relationship in children younger than eight years of age. In older children, the parent-child SC association is gender-specific and dominated by the father-son relationship, particularly on weekends. The SC associations that are revealed can be used for the development of physical activity programs for adolescents.

• Klíčová slova
• adolescents, children, dyads, family, physical activity, step count,
• MeSH
• aktigrafie MeSH
• cvičení * MeSH
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• otcové MeSH
• předškolní dítě MeSH
• rodiče MeSH
• senioři MeSH
• vztahy mezi rodiči a dětmi * MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• předškolní dítě MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Česká republika MeSH

BACKGROUND: Turning in place is a challenging motor task and is used as a brief assessment test of lower limb function and dynamic balance. This review aims to examine how research of instrumented analysis of turning in place is implemented. In addition to reporting the studied population, we covered acquisition systems, turn detection methods, quantitative parameters, and how these parameters are computed. METHODS: Following the development of a rigorous search strategy, the Web of Science and Scopus were systematically searched for studies involving the use of turning-in-place. From the selected articles, the study population, types of instruments used, turn detection method, and how the turning-in-place characteristics were calculated. RESULTS: Twenty-one papers met the inclusion criteria. The subject groups involved in the reviewed studies included young, middle-aged, and older adults, stroke, multiple sclerosis and Parkinson's disease patients. Inertial measurement units (16 studies) and motion camera systems (5 studies) were employed for gathering measurement data, force platforms were rarely used (2 studies). Two studies used commercial software for turn detection, six studies referenced previously published algorithms, two studies developed a custom detector, and eight studies did not provide any details about the turn detection method. The most frequently used parameters were mean angular velocity (14 cases, 7 studies), turn duration (13 cases, 13 studies), peak angular velocity (8 cases, 8 studies), jerkiness (6 cases, 5 studies) and freezing-of-gait ratios (5 cases, 5 studies). Angular velocities were derived from sensors placed on the lower back (7 cases, 4 studies), trunk (4 cases, 2 studies), and shank (2 cases, 1 study). The rest (9 cases, 8 studies) did not report sensor placement. Calculation of the freezing-of-gait ratio was based on the acceleration of the lower limbs in all cases. Jerkiness computation employed acceleration in the medio-lateral (4 cases) and antero-posterior (1 case) direction. One study did not reported any details about jerkiness computation. CONCLUSION: This review identified the capabilities of turning-in-place assessment in identifying movement differences between the various subject groups. The results, based on data acquired by inertial measurement units across studies, are comparable. A more in-depth analysis of tests developed for gait, which has been adopted in turning-in-place, is needed to examine their validity and accuracy.

• Klíčová slova
• Balance, Camera system, Inertial measurement unit, Wearable sensor,
• MeSH
• bérec MeSH
• cévní mozková příhoda * MeSH
• chůze (způsob) MeSH
• lidé středního věku MeSH
• lidé MeSH
• Parkinsonova nemoc * MeSH
• pohyb MeSH
• senioři MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• scoping review MeSH

• MeSH
• imunosupresiva terapeutické užití   MeSH
• lidé MeSH
• monitorování imunologické * MeSH
• počet leukocytů MeSH
• pooperační komplikace prevence a kontrola   MeSH
• předoperační péče MeSH
• rejekce štěpu účinky léků   MeSH
• T-lymfocyty klasifikace   MeSH
• transplantace srdce * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• imunosupresiva MeSH

• MeSH
• antropometrie MeSH
• dýchání * MeSH
• hematokrit MeSH
• hemodynamika * MeSH
• hemoglobinometrie MeSH
• hyperventilace MeSH
• lidé MeSH
• odpočinek MeSH
• plicní embolie patofyziologie   MeSH
• počet erytrocytů MeSH
• polycythaemia vera patofyziologie   MeSH
• spirometrie MeSH
• stanovení krevního objemu MeSH
• zátěžový test MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

BACKGROUND: This study focuses on the comparison of weekday/weekend parent-child behavioural patterns (step count (SC) and screen time (ST)) and answers the question of whether achieving the recommendations for daily SC (10,000) in parents also helps their preschool children achieve the recommended daily SC (11,500). METHODS: The participants (278 parents aged 30-45 and their 194 children aged 4-7) were randomly recruited from 10 Czech public kindergartens. The participants recorded SC (pedometer Yamax Digiwalker SW-200) and ST duration (proxy-report) for seven consecutive days (≥8 h/day) during September-October 2014 and April-May 2015. Differences between weekdays/weekends SC or ST were tested using a paired t-test. The odds of achieving the recommended daily SC for children were estimated using general logistic regression separately for weekdays and weekends. RESULTS: Only the mothers were found to have a significantly lower SC at weekends than on weekdays. All of the participants showed significantly more ST at weekends than on weekdays (daughters: 78.6 vs. 45.7 min/day, p < 0.001; sons: 78.8 vs. 55.8 min/day; mothers: 93.0 vs. 68.3 min/day; and fathers: 116.6 vs. 87.5 min/day). Daughters and sons were significantly more likely to achieve daily SC recommendation if a) the SC on weekdays during the daily routine in kindergarten exceeded the median of kindergarten SC or b) at weekends if their mother (OR: 9.67, 95 % CI: 3.57-26.23) exceeded 10,000 steps a day. CONCLUSIONS: Especially at weekends, preschoolers have higher odds of meeting the recommended 11,500 steps per day when their mother reaches 10,000 steps per day and this is independent of the amount of parents' ST. Moreover, physical activity in kindergarten helps preschool children meet the 11,500 recommended steps per day on weekdays. Therefore, interventions to promote physical activity in preschoolers should focus on kindergartens and encourage involvement of their families.

• Klíčová slova
• Family, Father, Kindergarten, Mother, Step count, Weekdays, Weekends, Yamax pedometer,
• MeSH
• chování dětí * MeSH
• cvičení * MeSH
• dítě MeSH
• dospělí MeSH
• lidé MeSH
• logistické modely MeSH
• matky MeSH
• otcové MeSH
• počítače * MeSH
• předškolní dítě MeSH
• rodiče * MeSH
• sedavý životní styl MeSH
• školy * MeSH
• televize * MeSH
• životní styl * MeSH
• Check Tag
• dítě MeSH
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• předškolní dítě MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH

This study focuses on determining the relationship between parents' step count (SC) and screen time (ST) and children's SC and ST on weekdays and at weekends. The participants (278 parents aged 30-45 and their 194 children aged 4-7) were recruited from 10 randomly selected Czech kindergartens. The participants recorded SC and ST duration over a week-long monitoring (≥8 h/day) during September-October 2014 and April-May 2015. The associations between parents' SC and ST and children's SC and ST were estimated using general linear regression for weekdays and weekends. Each 2500 SC increase in mothers'/fathers' daily SC at weekdays (weekends) was associated with an extra 1143/903 (928/753) daily SC in children. Each 60 min of ST increase in mothers'/fathers' ST at weekdays (weekends) was associated with an extra 7.6/7.6 (16.8/13.0) min of child daily ST. An increase of 2500 mothers' daily SC was associated with reduction of 2.5 (7.5) min of ST in children at weekdays (weekends). This study reveals a significant relationship between parent-child SC/day, parent-child ST/day, and mothers' ST and children's SC at weekends. Weekend days seem to provide a suitable space for the promotion of joint physical activity in parents and their pre-schoolers.

• Klíčová slova
• Yamax pedometer, fathers, mothers, screen time, step count, weekdays, weekends,
• MeSH
• aktigrafie MeSH
• cvičení * MeSH
• dítě MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• lineární modely MeSH
• matky MeSH
• otcové MeSH
• počítače MeSH
• předškolní dítě MeSH
• rodiče MeSH
• sedavý životní styl * MeSH
• školy MeSH
• televize MeSH
• vztahy mezi rodiči a dětmi * MeSH
• Check Tag
• dítě MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• předškolní dítě MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH