Acta Gymnica - Ahead of Print

Effect of caffeine on maximal oxygen uptake in wheelchair rugby players: A randomized, placebo-controlled, double-blind study

Iva Klimešová, Iva Machová, Aleš Jakubec, John Corkle

Acta Gymnica X:X | 10.5507/ag.2017.001

Background: The positive effects of caffeine supplementation on strength-power and endurance performance in healthy athletes have been demonstrated in many studies. A possible mechanism for its ergogenic effect relates to its influence on the central nervous system. Post-traumatic complications in cervical spinal cord injury affect almost all body systems including the nervous system. For this reason, we expect that caffeine will have a different effect of performance in the group of athletes with spinal cord injuries. Objective: To examine the effects of caffeine supplementation on maximal aerobic power in elite wheelchair rugby players. Methods:...

An evaluation of frailty factors among elderly and their mutual links in elderly women in the Olomouc region

Tereza Kaplanová, Miroslava Přidalová, Vendula Zbořilová

Acta Gymnica X:X | 10.5507/ag.2017.002

Background: Ageing has a significant impact on the functional status and capacity in physical, cognitive, sensory and nutritional areas. The age-related changes include changes in body composition as well as changes in the musculoskeletal system including a significant loss of muscle mass and demineralization of bone. Objective: The aim of this study was to evaluate the relationship between selected parameters of frailty factors in older women from the Olomouc region. Methods: The research group consisted of 225 women (aged 60-81 years) attending University of the Third Age at the Faculty of Physical Culture, Palacký University Olomouc and women from...

The application of accelerometers to measure movements of upper limbs: Pilot study

Patrik Kutilek, Petr Volf, Rudolf Cerny, Jan Hejda

Acta Gymnica X:X | 10.5507/ag.2017.003

Background: Even though inertial measurement units (IMU) are already being used experimentally for evaluating movements of segment of the axial skeleton, no studies have been found which have used IMUs to measure the behavior of the segments of upper limbs during quiet stance. Objective: The objective is to design a suitable application of IMUs to measure movements of the upper extremities in Romberg's test and analyze spontaneous arm movements. Second aim is to identify possible discrepancies between the dominant and non-dominant arm movements. Methods: The dominant and non-dominant upper limb of each participant was identified. Then, the movements...

Relation between knee extensors' strength, postural stability and variability of centre of pressure displacement during gait in adult women

Eliza C. de Souza, Zdeněk Svoboda, Lucia Bizovská, Michal Lehnert

Acta Gymnica X:X | 10.5507/ag.2017.004

Background: It has been shown that variability of walking is related to fall risk similarly as postural control and muscle strength. Joint potential of this group of variables for fall risk assessment is promising, however research interested in relations between them is lacking. Objective: The aim of this study was to investigate the relation between knee extensors' strength, centre of pressure (COP) velocity during one-leg stance and variability of COP displacement during various phases of gait cycle in middle-age women. Methods: A single group of 40 healthy women (age 56 ± 4.2 years) took part in the study. For assessment...

Personality and sensation seeking in high-risk sports

Polona Klinar, Stojan Burnik, Tanja Kajtna

Acta Gymnica X:X | 10.5507/ag.2017.005

Background: Personality represents a relatively consistent and unique sum of psychological, cognitive and physical characteristics of an individual. Sensation seeking is defined as an action, characterized by the search for different, new, complex and intensive emotions and experiences and preparedness to take physical, social, legal and financial risks in order to achieve these experiences.Objective: We were looking for differences in personality and sensation seeking between high-risk sports athletes and recreational athletes and the correlation between one's purpose to participate in high-risk sports and actual participation.Method: The data was...

Gopher FITStep Pro accuracy when measuring steps and moderate-to-vigorous physical activity

Ali Brian, Justin A. Haegele

Acta Gymnica X:X | 10.5507/ag.2017.006

Background: The Gopher FITStep Pro (GFSP) is a commercially available objective physical activity monitor that records steps taken and moderate-to-vigorous physical activity (MVPA). Objective: The purpose of this study was to evaluate the accuracy of the GFSP for measuring steps taken in a guided walking condition and MVPA during planned fitness activities. Method: University-aged participants (N = 35, Mage = 20) wore two GFSP (right and left side) pedometers and one ActiGraph GT3X+ accelerometer during both conditions. Results: Paired samples t-tests determined that self-step counts in the guided walking condition were...