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    Determination of musculoskeletal system pain, physical activity intensity, and prolonged sitting of university students using smartphone
    (Sciendo, 2019) Can, Sema; Karaca, Ayda
    Study aim: The purpose of this study was to examine smartphone-using university students' musculoskeletal system pain complaints, duration of smartphone and computer usage, participation in moderate-vigorous physical activities (MVPA), and prolonged sitting time. Material and methods: This study was conducted on Hitit University students (n = 387; 206 female, 181 male) in the province of Çorum. The International Physical Activity Questionnaire-Short Form (IPAQ-SF), the Physical Activity Assessment Ques-tionnaire (PAAQ) (sports/exercise activities section), and a personal information form prepared by the researchers were used as data collection tools. Descriptive statistics and the t-test were used to determine differences between groups. The Pearson chi-square test was used to examine the relationship between categorical variables. Results: It was observed that half of the participants with musculoskeletal system pain complaints (54.5%) feel the pain in all four areas (neck, shoulder, upper and lower back). There was no statistically significant relationship between physical activity intensity and pain complaint (p > 0.05). The students with musculoskeletal pain complaints spend more time on the smartphone and computer than students who do not have pain complaints (p < 0.05). During electronic device usage, the students who are in the low-intensity physical activity category spend more time sitting down than students in the moderate/vigorous intensity physical activity category (p < 0.05). Conclusions: In consequence, information can be provided about the importance of reducing sitting time during smartphone use and increasing the duration of moderate/vigorous-intensity physical activity (PA) so awareness can be raised on the issue among university students. © 2019 Sema Can, Ayda Karaca, published by Sciendo.
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    Physical activity measurement by SWA in employees: Weekdays and weekend
    (PPHU Projack, 2017) Can, Sema; Karaca, Ayda; Arslan, Erşan; Biernat, Elzbieta
    Introduction: The purpose of this study was to identify the levels of physical activity level during the weekdays and weekend both female and male employees. Method: A total of 58 volunteer employees participated in this study of which 20 were male (Mage 32.50 ± 8.82) and 38 were female (Mage 34.24 ± 6.25). Anthropometric measurements were performed after an overnight fast for each participant. After anthropometric measurements, daily physical activity levels were measured continuously with the Sense Wear Armband (BodyMedia, USA) monitor, worn on the dominant arm triceps muscle on free-living individuals for a during of seven days. Whether the number of steps, physical activity level (PAL) and inactivity time change depending on the days of the week and the gender was calculated in repetitive measurements with one-way analysis of variance. For globosity variance validity, Mauchly's test was used. For the variables which cannot be replaced for globosity variance, Greenhouse-Geisser test was used. Results: According to daily step numbers, women are slight active and men are active (9479±3468; 11338±3297 step/day respectively) (p > 0.05). Daily mean PAL is on sedentary/light level both for women and men (1.55±0.19; 1.61±0.28 kcal·kg-1·hr-1 respectively) (p > 0.05). According to days of the week, a statistical difference was found between the daily step numbers in men and women (p < 0.05). While there was a statistically significant difference in PAL averages among women (p < 0.05), there was no statistical difference in men (p > 0.05). While PAL value was the highest in weekdays and lowest on Sunday for both genders, the day with the longest inactivity time was found to be Sunday. Women's daily mean inactivity time was founder to be longer than men (1264±69; 1205±107 min·day-1 respectively) (p > 0.05). Conclusion: Both men and women take more than 10000 steps only in weekdays. PAL of both women and men in weekdays and weekend is at sedentary/light activity level. The most active days for both genders are in weekdays, while Sunday is the least active day. © 2017 Physical Activity Review.
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    Validation of the ActiGraph wGT3X-BT Accelerometer for Step Counts at Five Different Body Locations in Laboratory Settings
    (Routledge Journals, Taylor & Francis Ltd, 2021) Karaca, Ayda; Demirci, Necip; Yılmaz, Vedat; Hazır Aytar, Sinem; Can, Sema; Ünver, Evrim
    This study aimed to determine the validity of the ActiGraph wGT3X-BT for step counts (SC) at five different body locations in laboratory settings. A total of 29 male adults participated in this study. The participants walked or ran for different speeds on the treadmill while wearing ActiGraph wGT3X-BT on their right wrist (RW), left wrist (LW), waist, right ankle (RA), and right upper arm (RUA). Both the video camera and each ActiGraph recorded SC simultaneously. The waist, RUA (6, 8, 10 km/hr and total), and RA (4 and 6 km/hr) showed small Mean Absolute Percentage Error (MAPE) values (<5%) and good agreement with Bland-Altman plots. However, the waist (2 and 4 km/hr), RUA (2 and 4 km/hr), RA (2, 8, 10 km/hr and total), RW, and LW showed high MAPE. In conclusion, the waist and RUA are valid for the total SC during walking and running in the laboratory setting.