Jan Cvecka

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The loss in muscle mass coupled with a decrease in specific force and shift in fiber composition are hallmarks of aging. Training and regular exercise attenuate the signs of sarcopenia. However, pathologic conditions limit the ability to perform physical exercise. We addressed whether electrical stimulation (ES) is an alternative intervention to improve(More)
The histologic features of aging muscle suggest that denervation contributes to atrophy, that immobility accelerates the process, and that routine exercise may protect against loss of motor units and muscle tissue. Here, we compared muscle biopsies from sedentary and physically active seniors and found that seniors with a long history of high-level(More)
OBJECTIVE To compare the effects of isokinetic (ISO-K) and vibrational-proprioceptive (VIB) trainings on muscle mass and strength. METHODS In 29 ISO-K- or VIB-trained young athletes we evaluated: force, muscle fiber morphometry, and gene expression of muscle atrophy/hypertrophy cell signaling. RESULTS VIB training increased the maximal isometric(More)
Aging is a multifactorial irreversible process associated with significant decline in muscle mass and neuromuscular functions. One of the most efficient methods to counteract age-related changes in muscle mass and function is physical exercise. An alternative effective intervention to improve muscle structure and performance is electrical stimulation. In(More)
Age-related sarcopenia is characterized by a progressive loss of muscle mass with decline in specific force, having dramatic consequences on mobility and quality of life in seniors. The etiology of sarcopenia is multifactorial and underlying mechanisms are currently not fully elucidated. Physical exercise is known to have beneficial effects on muscle(More)
s This article is distributed under the terms of the Creative Commons Attribution Noncommercial License (by-nc 3.0) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. Muscular Sarcopenia is a major clinical issue in ageing, and decreased muscle mass and strength are(More)
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(More)
Electrical stimulation counteracts muscle atrophy associated with aging in humans Functional and structural muscle decline is a major problem during aging. Our goal was to improve in old subjects quadriceps m. force and mobility functional performances (stair test, chair rise test, timed up and go test) with neuromuscular electrical stimulation (9 weeks,(More)
1 and 15 Hz vibration trainings are equally effective on maximal isometric force and force development in healthy senior sportsmen Purpose of this study was to examine the effect of vibrations of different frequencies (1 Hz and 15 Hz) on maximal isometric force and force development in healthy senior sportsmen. Seven healthy elderly (mean age 69± 5, 43 y)(More)
The influence of serial stretch loading on the effectiveness of isokinetic strength training We evaluated strength capabilities change by 33 well trained sport students after 8 weeks of isokinetic eccentric overload strength training with integrated proprioceptive stimulation (= serial stretch loading) on computer controlled linear isokinetic leg press.(More)
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