1. Anderson E., Borch-Jenssen J., Øvreås S., Ellingsen H., Jørgensen K.A., Moser T. (2017) Objectively measured physical activity level and sedentary behavior in Norwegian children during a week in preschool. Prev. Med. Rep., 7: 130-135.
2. Baddou I., El Hamdouchi A., El Harchaoui I., Kaoutar B., Naima S., Elmazibri M., El Kari K., Aguenou H. (2018) Objectively measured physical activity and sedentary time among children and adolescents in Morocco: a cross sectional study. Biomed. Res. Int., 8949757.10.1155/2018/8949757617818430356414
3. Baessler J., Schwarcer R. (1996) Evaluación de la autoeficacia: Adaptación española de la escala de Autoeficacia General. Ansiedad. y Estrés., 2(1): 1-8.
4. Balaban V. (2018) The relationship between objectively measured physical activity and fundamental motor skills in 8 to 11 years old children from the Czech Republic. Montenegrin J. Sports Sci., 7(2): 11-16.10.26773/mjssm.180902
6. Carvalho A.S., Bohn L., Abdalla P.P., Ramos N.C., Borges F.G., Mota J., Machado D.R.L. (2021) The Associations of Objectively Measured Physical Activity, Fundamental Motor Skills and Time in Sedentary Behavior in Children: A Cross-Sectional Study. Percept. Mot. Skills, 128(6): 2507-2526.10.1177/0031512521103873134407671
7. Caspersen C.J., Powell K.E., Christenson G.M. (1985) Physical activity, exercise, and physical fitness: Definitions and distinctions for health-related research. Public Health Reports, 100: 126-131.
8. Choi L., Liu Z., Matthews C.E., Buchowski M.S. (2011) Validation of accelerometer wear and non-wear time classification algorithm. Med. Sci. Sports Exerc., 43: 357.
9. Colella D., Monacis D., D’arando C. (2020). Motor performacnes in realtion to perceived physical self-efficacy, enjoyment and BMI in primary school children. Eur. J. Phys. Educ. Sport Sci., 6(3): 27-45.
10. Dana A., Christodoulides E. (2019) The Effects of a Period of Selected Physical Activity on Improving Manipulative and Locomotors Skills of Children with Neuropsychological Learning Disabilities. J. Rehabil. Sci. Res., 7: 25-30.
11. De Kegel A., Dhooge I., Peersman W., Rijckaert J., Baetens T., Cambier D., Van Waelvelde H. (2010) Construct validity of the assessment of balance in children who are developing typically and in children with hearing impairments. Phys. Ther., 90(12): 1783-1794.10.2522/ptj.2010008021030662
12. Evenson K.R., Catellier D.J., Gill K., Ondrak K.S., Mc-Murray R.G. (2008) Calibration of two objective measures of physical activity for children. J. Sport. Sci., 26: 1557-1565.
13. Gao Z., Wen X., Fu Y., Lee JE., Zeng N. (2021) Motor skill competence matters in promoting physical activity and health. Biomed. Res. Int., 24: 9786368.
14. García-Soidán J.L., García-Liñeira J., Leirós-Rodríguez R., Soto-Rodríguez A. (2020) Physical Activity Practice and Optimal Development of Postural Control in School Children: Are They Related? J. Clin. Med., 9(9): 2919.10.3390/jcm9092919756515632927763
15. Ghorbani S., Afshari M., Eckelt M., Dana A., Bund A. (2021) Associations between Physical Activity and Mental Health in Iranian Adolescents during the COVID-19 Pandemic: An Accelerometer-Based Study. Children, 8(11): 1022.
16. Ghorbani S., Rezaeeshirazi R., Shakki M., Noohpisheh S., Farzanegi P. (2020) The role of BMI, physical activity and the use of electronic device in the status of trunk abnormalities in male adolescents. J. Gorgan Univ. Med. Sci., 22(3): 129-136.
17. Houwen S., van der Veer G., Visser J., Cantell M. (2017) The relationship between motor performance and parent-rated executive functioning in 3 – to 5-year-old children: What is the role of confounding variables? Hum. Mov. Sci., 53: 24-36.10.1016/j.humov.2016.12.00928153568
18. Ishii K., Shibata A., Adachi M., Nonoue K., Oka K. (2015) Gender and grade differences in objectively measured physical activity and sedentary behavior patterns among Japanese children and adolescents: a cross-sectional study. BMC Public Health, 15: 1254.10.1186/s12889-015-2607-3468370526679503
19. Janssen I., LeBlanc A.G. (2010) Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act., 7: 40.
20. Jones D., Innerd A., Giles E.L., Azevedo L.B. (2021) The Association between Physical Activity, Motor Skills and School Readiness in 4–5-Year-Old Children in the Northeast of England. Int. J. Environ. Res. Public Health., 18: 11931.
21. Kantanista A., Bronikowski M., Laudańska-Krzemiń-ska I., Król-Zielińska M., Osiński W. (2017) Positive effect of pedometer-based walking intervention on body image and physical activity enjoyment in adolescent girls. Biomed. Hum. Kinet., 9(1): 34-42.10.1515/bhk-2017-0006
23. Laudańska-Krzemińska I., Tomczak M., Pluta B., Bronikowska M., Kasprzak Z, Maciaszek J. (2020) Health-related fitness components – Links between parents and their child. Am. J. Health. Behav., 44(4): 375-383.10.5993/AJHB.44.4.132553020
24. Lenhart C.M., Hanlon A., Kang Y., Daly B.P., Brown M.D., Patterson P. (2012) Gender disparity in structured physical activity and overall activity level in adolescence: Evaluation of youth risk behavior surveil-lance data. ISRN. Public Health, 2012: 674936.
25. Marker A.M., Steele R.G., Noser A.E. (2018) Physical activity and health-related quality of life in children and adolescents: a systematic review and meta-analysis. Health Psychol., 37: 893-903.10.1037/hea000065330234348
26. Medrano-Ureña M.D.R., Ortega-Ruiz R., Benítez-Sillero J.D. (2020) Physical Fitness, Exercise Self-Efficacy, and Quality of Life in Adulthood: A Systematic Review. Int. J. Environ. Res. Public Health, 17(17): 6343.10.3390/ijerph17176343750433232878182
27. Migueles J.H., Cadenas-Sanchez C., Alcantara J.M.A., Leal-Martín J., Mañas A., Ara I., Glynn N.W., Shiroma E.J. (2021) Calibration and cross-validation of accelerometer cut-points to classify sedentary time and physical activity from hip and non-dominant and dominant wrists in older adults. Sensors, 21: 3326.10.3390/s21103326815096034064790
28. Morales-Sánchez V., Hernández-Martos J., Reigal R.E., Morillo-Baro J.P., Caballero-Cerbán M., Hernández-Mendo A. (2021) Physical Self-Concept and Motor Self-Efficacy Are Related to Satisfaction/Enjoyment and Boredom in Physical Education Classes. Sustainability, 13: 8829.10.3390/su13168829
29. Oliveira E., Mendes A.F., Dias F., Lucas J., Fernando A. (2021) Analysis of postural balance in children who practice and those who do not practice sports activities. Rev. Bras. de Medicina do Esporte., 27(6): 588-591.10.1590/1517-8692202127062021_0032
30. Poitras V.J., Gray C.E., Borghese M.M., Carson V., Chaput J.P., Janssen I., Katzmarzyk P.T., Pate R.R., Connor Gorber S., Kho M.E., Sampson M., Tremblay M.S. (2016) Systematic review of the relationships between objectively measured physical activity and health indicators in school-aged children and youth. Appl. Physiol. Nutr. Metab., 41: 197-239.
31. Riso E., Kull M., Mooses K., Hannus A., Jürimäe J. (2016) Objectively measured physical activity levels and sedentary time in 7-9-year-old Estonian schoolchildren: Independent associations with body composition parameters. BMC. Public Health, 16: 346.
32. Sallen J., Andrä C., Ludyga S., Mücke M., Herrmann C. School children’s physical activity, motor competence, and corresponding self-perception: A longitudinal analysis of reciprocal relationships. J. Phys. Act. Health, 17(11): 1083-1090.10.1123/jpah.2019-050732839350
33. Saller F.V.I., Khaled S.M. (2019) Potential psychosocial influences on gender differences in physical activity among Qatari adolescents: A first insight through descriptive observation. Int. J. Adolesc. Youth., 24: 234-251.
35. Slootmaker S.M., Schuit A.J., Chinapaw M.J., Seidell J.C, van Mechelen W. (2009) Disagreement in physical activity assessed by accelerometer and self-report in subgroups of age, gender, education and weight status. Int. J. Behav. Nutr. Phys. Act., 6: 17.
36. Stanek E., Truszczyńska A., Drzał-Grabiec J., Tarnowski A. (2015) Postural balance assessment in children aged 7 to 9 years, as related to body weight, height, and physical activity. Biomed. Hum. Kinet., 7(1): 135-141.10.1515/bhk-2015-0020
37. Thivel D., Tremblay A., Genin P.M., Panahi S., Rivière D., Duclos M. (2018) Physical activity, inactivity, and sedentary behaviors: Definitions and implications in occupational health. Front. Public Health, 6: 288.
38. Trost S.G., Pate R.R., Sallis J.F., Freedson P.S., Taylor W.C., Dowda M., Sirard J. (2002) Age and gender differences in objectively measured physical activity in youth. Med. Sci. Sports Exerc., 34: 350-355.
39. Utesch T., Bardid F., Büsch D., Strauss B. (2019) The relationship between motor competence and physical fitness from early childhood to early adulthood: A meta-analysis. Sports. Med., 49(4): 541-551.10.1007/s40279-019-01068-y30747376
41. Warburton D.E.R., Bredin S.S.D. (2017) Health benefits of physical activity: a systematic review of current systematic reviews. Curr. Opin. Cardiol., 32: 541-556.
43. Wrotniak B.H., Epstein L.H., Dorn J.M., Jones K.E., Kondilis V.A. (2006) The relationship between motor proficiency and physical activity in children. Pediatrics, 118(6): e1758-65.10.1542/peds.2006-074217142498