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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
A Journal on Internal Medicine and Pharmacology
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2008 August;167(4):159-63
Secular trends in HR response after submaximal work of 6-year-old Polish children
Department of Public Health University School of Physical Education and Sports, Gdansk, Poland
Aim. The aim of this study was to determine the values of cardiorespiratory response in pulse recovery (HR rec.) after submaximal work, and to show secular trends in this HR rec.
Methods. Six-years old children (10 669 boys and 10 345 girls) were investigated from 1995 to 2004. Weight and height were measured and BMI was calculated. A 3-min step-test with registered post exercise HR was applied in the study. Linear regression was used to calculate rates of change.
Results. There was a similar secular change in body height, weight, BMI and HR rec. The growth of BMI is most often accompanied by higher values of HR rec. The regression indicate that HR recovery has remained relatively stable with a slight decline since 1999s. In the second half of the decade of the study the declining tendency in HR rec. in boys was significant (P<0.05). Such a tendency was not observed in girls.
Conclusion. The obtained fitness results in 10 subsequent populations of 6 year olds do not give us any basis for transferring true opinions about the decreasing physical fitness in young generation school-age children onto pre-school children at the beginning of primary school.