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Reliability of novel postural sway task test
Milan Sedliak, Jan Cvecka, Veronika Tirpáková, Stefan Loefler, Nejc Šarabon, Helmut Kern, Dušan Hamar, 2013, original scientific article

Abstract: The purpose of this study was to examine the reliability of parameters obtained from a novel postural sway task test based on body movements controlled by visual feedback. Fifty-nine volunteers were divided into two groups. The first group consisted of young (n = 32, 16 females and 16 males, age: 25.2 3.4 years) and the second group of elderly individuals (n = 27, 17 females and 10 males, age: 75.7 6.9 years). Participants stood in parallel on a computer based stabilographic platform with the feet approximately a shoulder width apart, the toes slightly pointing outwards, the hands placed on the hips. The computer screen was placed approximately 1.5 meter from the platform at a height of subjects eyes. An instantaneous visual feedback of participants centre of pressure (COP) was given in a form of a blue cross visible on the screen. Participants were instructed to keep the blue cross driven by movements of their hips as close as possible to a predefined curve flowing on the screen. Out of the 6 parameters studied, only the average distance of COP from the curve line and the sum of the COP crossings through the curve line showed high reliability. Correlation between these two highly reliable parameters was -0.89. There was also a statistical difference (p<0.001) between young and elderly in both the average distance of COP from the curve line and the sum of the COP crossings through the curve. To conclude, the novel postural sway task provides a simple tool with relatively low time burden needed for testing. The suggested output parameters measured are highly reliable and easy to interpret
Found in: osebi
Keywords: balance, postural control, task test, visual feedback
Published: 15.10.2013; Views: 1823; Downloads: 121
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Strength training in elderly people improves static balance
Nejc Šarabon, Stefan Loefler, Jan Cvecka, Milan Sedliak, Helmut Kern, 2013, original scientific article

Abstract: Aim of this study was to investigate the effects of two different types of strength training programs on static balance in elderly subjects. Subjects older than 65 years of age were enrolled and assigned to control group (CG, n =19), electrical stimulation group (ES, n = 27) or leg press group (LP, n = 28). Subjects in both the training groups were exposed to training (2-3x/week) for a period of 9 weeks. In the ES group the subjects received neuromuscular electrical stimulation of the anterior thigh muscles. In the LP group the subjects performed strength training on a computer-controlled leg press machine. Before and after the training period, static balance of the subject was tested using a quiet stance task. Average velocity, amplitude and frequency of the center-of-pressure (CoP) were calculated from the acquired force plate signal. The data was statistically tested with analysis of (co)variance and t-tests. The three groups of subjects showed statistically significant differences (p < 0.05) regarding the pre-training vs. post-training changes in CoP velocity, amplitude and frequency. The differences were more pronounced for CoP velocity and amplitude, while they were less evident in case of mean frequency. The mean improvements were higher in the LP group than in the ES group. Our results provide supportive evidence to the existence of the strength-balance relationship. Additionally, results indicate the role of recruiting central processes and activation of functional kinetic chains for the better end effect
Found in: osebi
Keywords: balance, aging, falls, strength, training
Published: 15.10.2013; Views: 1607; Downloads: 199
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Exercise in sedentary elderlies
Antonio Musarň, Stefan Loefler, Samantha Burggraf, Marco Sandri, Sandra Zampieri, Milan Sedliak, Nejc Šarabon, Jan Cvecka, Dušan Hamar, Simone Mosole, Hannah Fruhmann, 2015, published scientific conference contribution abstract

Found in: osebi
Keywords: elderly, physical activity, muscle
Published: 15.10.2015; Views: 1371; Downloads: 11
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