Acta Gymnica, 2019 (vol. 49), issue 3
The comparison of Holux and Qstarz GPS receivers in free living conditions: Dynamic accuracy in different active transport modes
Michal Vorlíček, Tom Stewart, Jan Dygrýn, Lukáš Rubín, Josef Mitáš, Jasper Schipperijn
Acta Gymnica 2019, 49(3):109-114 | DOI: 10.5507/ag.2019.009 
Background: Physical activity (PA) is one of the major factors influencing human health. An important group of determinants are elements forming the built environment. For a proper understanding of relationships between the built environment and PA, we need to measure PA in space. Objective: This study aims to verify the accuracy of the Holux RCV-3000 GPS logger, which has not yet been validated in relation with PA. Methods: Two GPS receivers (Holux RCV-3000 and already validated Qstarz BT-Q1000XT) were tested during walking, running and cycling. A total of 1,908 GPS points were recorded by each device. For each trip, we calculated the percentage of...
Evaluation of learning of asymmetrical bimanual tasks and transfer to converse pattern: Load, temporal and spatial asymmetry of hand movements
Mohammadreza Doustan, Mehdi Namazizadeh, Mahmoud Sheikh, Naser Naghdi
Acta Gymnica 2019, 49(3):115-124 | DOI: 10.5507/ag.2019.010
Background: In most daily activities, we are required to use both hands. In many motor skills like playing guitar, the left and right hand must perform asymmetric movements with different timing. Objective: The aim of the study was to evaluate the effect of learning in various asymmetrical bimanual tasks and to evaluate the transfer to tasks with converse hand movements. Methods: Thirty right-handed male students (age 21.5 ± 1.3 years) who had no motor disorders were divided into three groups. Participants of each group were trained for four days after a pretest. All participants performed asymmetrical bimanual drawing of a circle with each hand....
Neuromuscular control of the knee joint during basketball season in male youth players
Matěj Strniště, Karel Hůlka, Michal Lehnert, Eliška Maixnerová, Renata Vařeková, Šárka Lazecká
Acta Gymnica 2019, 49(3):125-131 | DOI: 10.5507/ag.2019.011
Background: Basketball players are among the players with a great risk of anterior cruciate ligament injury due to the high-intensity manoeuvres which have been identified as very common factors preceding this injury. Objective: This study aimed to assess differences in leg stiffness and reactive strength throughout a competitive season in youth basketball players and to assess the effect of age and performance level on these variables. Methods: The research study involved a total of 48 male basketball players from the age group U14 and U16 played the first and second highest league in Czech Republic. Reactive strength index (RSI) and leg stiffness...
Relationship between anthropometric and strength variables and maximal throwing velocity in female junior handball players - a pilot study
Javad Sarvestan, Václav Riedel, Zuzana Gonosová, Petr Linduška, Miroslava Přidalová
Acta Gymnica 2019, 49(3):132-137 | DOI: 10.5507/ag.2019.012
Background: Throwing velocity is one of the determinant scoring elements in handball. However, our knowledge of anthropometric factors and shoulder muscle strength among female players and how these affect throwing velocity is limited. Objective: This study aimed to assess the relationships between throwing velocity and the physical traits of anthropometric factors and shoulder muscle strength in female handball players. Methods: Nine elite female junior handball players (age 17.1 ± 1.7 years, body height 169.7 ± 3.8 cm, body mass 66.2 ± 6.8 kg, experience with handball 8.9 ± 1.7 years) participated in the study. Spearman's correlation...
The influence of saccadic eye movements on postural stability during standing on an unstable platform
Milena Vagaja, Lucia Bizovska
Acta Gymnica 2019, 49(3):138-143 | DOI: 10.5507/ag.2019.014
Background: Vision is seen as an important factor in maintaining balance, but different visual conditions, such as following a cue or looking in one direction may increase or decrease body sway. Contradicting results in earlier studies focusing on visual control of posture show the same eye movements' conditions have a different impact on postural stability. Objective: The aim of the study was to assess the influence of different eye movements on standing balance performance. Methods: Thirty-two healthy students (age 22.8 ± 2.7 years) participated in the study. Participants were asked to follow a stationary dot and moving dots in horizontal...
Effect of aerobics on weight and fat mass loss in adult women: Systematic review and meta-analysis
Petra Hiklová, Aleš Gába
Acta Gymnica 2019, 49(3):144-152 | DOI: 10.5507/ag.2019.013
Background: Aerobics (AE) is an attractive type of aerobic exercise and can be considered as an appropriate intervention strategy for weight loss. However, results of clinical trials are not consistent due to high variability in relation to the type of AE and duration of intervention. Objective: The objective was to investigate the effect of AE on weight and fat mass loss in adult women. Methods: Of the total number of 243 studies, the final analysis included seven clinical trials with a pooled sample size of 242 females. Results: Although the results confirmed a significant overall effect on weight loss (-1.97 kg, 95% confidence interval [-3.72, -0.23],...