Acta Gymnica, 2019 (vol. 49), issue 2
Effect of lactate supplementation on V̇O2peak and onset of blood lactate accumulation: A double-blind, placebo-controlled trial
Aaron E. Russ, Albino G. Schifino, Chee-Hoi Leong
Acta Gymnica 2019, 49(2):51-57 | DOI: 10.5507/ag.2019.004 
Background: Professional and recreational athletes use ergogenic aids to enhance aerobic performance, facilitate training adaptations, and reduce recovery time. While the ergogenic effect of commonly marketed and commercially available ergogenic aids (i.e., sodium bicarbonate and β-alanine) have been investigated extensively, the effectiveness of lactate supplementation on aerobic capacity markers (i.e., V̇O2peak and the onset blood lactate accumulation) has not been thoroughly investigated. Objective: The purpose of this study was to examine the effect of lactate supplementation on V̇O2peak and the onset blood...
Validity of the Movement Assessment Battery for Children test - 2nd edition in older adolescents
Ludvík Valtr, Rudolf Psotta
Acta Gymnica 2019, 49(2):58-66 | DOI: 10.5507/ag.2019.008
Background: The Movement Assessment Battery for Children test - 2nd edition (MABC-2) is one of the most commonly used tools to assess motor coordination in children. The question for clinical and psychological practice is whether the age band 3 (AB3) could be suitable also for 17-19-year-old adolescents. Objective: To examine the validity of the MABC-2 - AB3 test for 17-19-year-old adolescents. Methods: : One hundred twenty participants (60 boys and 60 girls) were assessed using the AB3 of the MABC-2 test. The validity of the AB3 for 17-19-year-old adolescents was assessed using two procedures: (1) analysis of the age factor for performance...
Test-retest reliability of survey items on ownership and use of physical activity trackers
Kwok W. Ng, Petr Badura, Anna Dzielska, Sami Kokko, Catherine B. Woods, Zdenek Hamrik
Acta Gymnica 2019, 49(2):67-74 | DOI: 10.5507/ag.2019.001
Background: Researchers are interested in using digital tools, such as physical activity trackers (PAT), to promote and measure physical activity. PAT is a fast-growing research area that measures movement therefore, reliable questions on the ownership and use of PATs among adolescent populations need to be developed. Objective: The aim of this study was to conduct an intra-rater test-retest reliability study on PAT survey items used for surveillance purposes among young adolescents in ownership and use of smartphone applications (apps) and heart rate monitors (HRM). Methods: Young adolescents (N = 755; 11-, 13-, and 15-year-olds) in the Olomouc region...
A qualitative exploration of the experiences of primary care patients engaged in email counseling meant to increase physical activity
Tomas Vetrovsky, Klaudia Vetrovska, Vaclav Bunc
Acta Gymnica 2019, 49(2):75-82 | DOI: 10.5507/ag.2019.005
Background: As insufficient physical activity is a widespread public health problem, the patients' perspective and experiences during their efforts to increase levels of physical activity need to be explored and elucidated. Objectives: The purpose of our study was to qualitatively analyze the patient-written email messages in order to explore patients' experiences during a 12-week pedometer-based physical activity intervention in a primary care setting that was paired with email counseling. Methods: The content of 31 email messages from 10 participants was extracted, coded, and analyzed using thematic analysis. Results: We identified 22 themes that...
Associations between adiposity and physical activity and sedentary behaviour patterns in older women
Zuzana Svozilová, Jana Pelclová, Jana Pechová, Miroslava Přidalová, Izabela Zając-Gawlak, Lenka Tlučáková, Tereza Kaplanová
Acta Gymnica 2019, 49(2):83-91 | DOI: 10.5507/ag.2019.006
Background: Despite broad interest in physical activity (PA) and excessive sitting, it remains unclear what the actual patterns of PA and sedentary behaviour (SB) in older adults are and how they are associated with adiposity. Objective: The aim of this study was to investigate the cross-sectional associations between the total amount and defined bouts of PA and SB with adiposity indicators in older women. Methods: Data on 313 community-dwelling women was used. All women wore an accelerometer for one week and undergone the body composition analysis. We used three adiposity indicators: fat mass percentage (FM%), visceral fat area (VFA), fat mass index...
Executive summary of the Czech Republic's 2018 Report Card on Physical Activity for Children and Youth
Aleš Gába, Lukáš Rubín, Erik Sigmund, Petr Badura, Jan Dygrýn, Michal Kudláček, Dagmar Sigmundová, Eliška Materová, Zdenek Hamrik, Aleš Jakubec, Aleš Suchomel
Acta Gymnica 2019, 49(2):92-102 | DOI: 10.5507/ag.2019.007
Background: Regular physical activity (PA) is associated with numerous health benefits. However, the decreasing level of PA and increasing screen-time among Czech children and youth has been well documented in the last two decades. To build effective intervention and prevention programs, it is necessary to review all available sources of evidence. Objective: The aim is to summarize the results of the first Czech Report Card on Physical Activity for Children and Youth based on a synthesis of the most recently available evidence. Methods: The Report Card included 10 indicators. To inform the indicator grades, a multi-level search strategy was used to...