Acta Gymnica - Ahead of Print

The assessment of static balance in children with hearing, visual and intellectual disabilities

Aija Klavina, Anna Zusa-Rodke, Zinta Galeja

Acta Gymnica X:X | 10.5507/ag.2017.013

Background: Balance is a fundamental part of many movement tasks a child performs. Maintaining upright posture is a complex process involving multiple body parts and functional systems. Objective: This study aimed to explore the mean amplitude and velocity of the center of pressure (COP) displacements during static balance tests in children with and without disabilities. Methods: Participants were 34 children (age 8.5 to 10.8 years) including 6 typically developed children, 8 children with hearing, 8 children with visual and 12 children with intellectual disabilities. Static balance data were obtained in 15 s bipedal stance with eyes open and...

Vagal activity and oxygen saturation response to hypoxia: Effects of aerobic fitness and rating of hypoxia tolerance

Tomáš Macoun, Michal Botek, Jakub Krejčí, Andrew J. McKune

Acta Gymnica X:X | 10.5507/ag.2017.014

Background: A reduction in the inspired oxygen fraction (FiO2) induces a decline in arterial oxygen saturation (SpO2) and changes of heart rate variability (HRV). It has been shown that SpO2 and HRV responses to similar levels of acute normobaric hypoxia are inter-individual variable. Variable response may be influenced by normoxia reached maximal oxygen uptake (VO2max) value. Objective: The primary aim was to assess HRV and the SpO2 response to hypoxia, and examine the association with normoxic VO2max. Methods: Supine HRV and SpO2 were monitored during normobaric hypoxia...

The contribution of pubertal development to performance scores in high-level rhythmic gymnasts

Tijana Purenović-Ivanović, Ružena Popović, Lidija Moskovljević

Acta Gymnica X:X | 10.5507/ag.2017.015

Background: Puberty is a central process in the complex set of changes that constitutes the transition from childhood to adolescence. This period of maturation is characterized by a growth spurt which affects virtually the whole skeleton and muscles and thus affecting children's motor performance. Objective: The present study investigated the role of pubertal status in predicting success in rhythmic gymnasts' (RGs) performance. Methods: One hundred and twenty-six national- and international-level RGs (age: 11.95 ± 3.09 years, body height: 147.76 ± 14.61 cm, body mass: 37.75 ± 11.72 kg,...