The aim of the study was to assess daily physical activity level and its influence on the physical efficiency of children after the treatment of leukemia. The study was comprised of 34 children (23 boys and 11 girls) after the treatment of acute lymphoblastic leukemia or myeloid leukemia (mean age of 11.29 ± 2.81 years, mean body height of 146.88 ± 16.11 cm, and mean body weight of 43.68 ± 13.93 kg). The mean time since treatment completion was 3.09 ± 1.80 years. The level of physical activity was assessed with the Health Behavior in School-Aged Children questionnaire (HBSC). Physical efficiency was assessed based on the palant ball throw (assessment of strength, coordination, and upper limb speed), the long jump (assessment of jumping ability, speed and coordination) and the 60 m run (assessment of speed). Measurements of motor skills were normalized, classified according to age and sex, and converted into grades. The mean values obtained in the run and the ball throw showed low pass grades in the study group. In the case of the long jump, satisfactory grades were obtained. A correlation of r = 0.512 was found between vigorous physical activity (HBSC 3) and the grade in the run. A correlation of r = -0.437 was observed between the duration of computer use in leisure time (HBSC 6) and the grade in the long jump, whereas correlations of r = -0.482 and -0.485 were noted between the number hours per week spent on games (HBSC 5) and the duration of computer use in leisure time (HBSC 6) and the grade obtained in the ball throw, respectively. In addition, different levels of physical activity and physical efficiency were demonstrated depending on the time elapsed since treatment completion. Supervised programs promoting daily physical activity should include children after the treatment of leukemia. These programs should also be aimed at improving their physical efficiency.
Keywords: child health; leukemia; physical activity; physical efficiency; physical fitness.