Background and Study Aim. Several lines of evidence indicate that physical activity has a positive impact on central nervous system. The positive impact is observed in areas of brain related to cognitive processes such as memory, learning and attention. The majority of studies focused on the chronic effects of exercise. Relatively limited number of reports addresses the problem of influence of acute exercise (single bouts of exercise) on cognitive functions. Material and methods. We examined the influence of a single bout of exercise on cognitive performance of young volunteers (23 males; aged 20,91 ± 1,01). To evaluate the cognitive performance in our subjects we used Face/Name Association Test, Stroop Test and Trail Making Test. Volunteers run for 30 minute at moderate –intensity. Results. The mean results in the Face/Name Association Test before acute exercise were 63,52 ± 5,65% and after acute exercise 67,34 ± 5,82% (p<0,005). Statistically differences results were also observed in duration of the retrieval phase of this test (p<0,005). In the Trial Making Test, in part A mean results before acute exercise were 66,26 ±11,24 seconds and after physical training 52,39 ± 11,10 seconds (p<0,005). In part B mean results were 80,60 ± 22,52 and 70,47 ± 14,54 seconds before and after acute exercise, respectively (p<0,05). We have not observed statistical difference in results of the Stroop Test. Conclusions. Our data suggest that a single bout of exercise can influence the level of cognitive performance. We demonstrate improvement in cognitive function depending on hippocampus (short-term memory) and prefrontal cortex (attention, cognitive flexibility). We have not observed influence of acute exercise on Stroop test (executive function) results.
Introduction: The aim of this study was to examine the effect of yoga on heart rate variability in patients with breast cancer in an outpatient rehabilitation program. Material and methods: Eighty-four patients with breast cancer were eligible for this study. After the exclusion of 7 women, participants were randomly allocated to a yoga exercise program (group A, n=33) and Pilates exercise program (group B, n=44). Heart rate variability parameters were evaluated at baseline, after six and twelve months of yoga exercises. Results: After twelve months of performing yoga exercises, standard deviation of the normal-to-normal intervals (SDNN) improved by 5.53 ms (p<0.001), square root of the mean of the squared differences between adjacent normal RR interval (RMSSD) improved by 4.91 ms (p<0.01), total power (TP) improved by 279.78 ms2 (p<0.001), very low frequency (VLF) improved by 109.76 ms2 (p<0.01), low frequency (LF) improved by 88.38 ms2 (p<0.01), high frequency (HF) improved by 77.60 ms2 (p<0.05), and stress index (Si) improved by 137.24 c.u. (p<0.01). Based on the results after 12 months, women in group A showed significantly better results compared to group B in SDNN by 3.28 ms (p<0.05), RMSSD by 3.34 ms (p<0.05), TP by 170.33 ms2 (p<0.05), HF by 64.33 (p<0.05), and Si by 56.49 c.u. (p<0.05). Conclusions: Performing the yoga exercise program resulted in an increase of the parasympathetic and baroreflex effects on the cardiovascular system and a decrease in the tonic effects of the sympathetic nervous system. Yoga should be considered as an effective tool in normalizing the functional state of the autonomic nervous system. breast cancer, heart rate, pilates, yoga
Background and Study Aim. The results of many research indicate that systematic physical activity has also positive effect on functions of the central nervous system. For example, improvement of the cognitive functions level, such as memory and learning, under the influence of systematic physical training has been demonstrated. The positive effect of physical activity on the central nervous system is especially visible and widely described with regard to elderly people, who develop many adverse remodeling changes in the structure of the brain. However, particularly interesting are the studies which show that also among young people a positive effect of physical activity on cognitive processes is observed. Currently, several hypotheses are proposed, presenting potential mechanisms underlying the beneficial effects of physical activity on the central nervous system. The first hypothesis assumes the beneficial effect of physical activity on the expression of hippocampal genes related to synaptic plasticity. The second hypothesis assumes that physical effort per se is an inducer of the secretion of the growth factors (e.g., BDNF, IGF-1), which have a trophic effect on the nervous system. In addition, the results of the latest scientific studies indicate that the positive effect of physical activity on the central nervous system may be due to the action of phospholipase (Gpld-1), released to the bloodstream from the liver under the influence of physical exercise. This work indicates that due to the influence on cognitive functions, physical activity is absolutely essential to both elderly and young people population. Conclusions. It seems necessary to educate both young and elderly people that the proper level of physical activity is a key factor allowing to maintain both physical and mental health at an appropriate, desirable level.
S u m m a r y Several lines of evidence suggest that being overweight or obese not only impacts the cardiovascular and respiratory systems but also exert a negative effect on the central nervous system. We examined the relationship between body mass index and cognitive performance in three groups of volunteers: obese (17 women; aged 59.88 ± 4.29; BMI 34.08 ± 2.31), overweight (35 women; aged 59.70 ± 4.68; BMI 27.87± 1.44), and normal body weight group (18 women; aged 64.5 ±4.84; BMI 23.53 ± 1.21). To evaluate the cognitive performance in our subjects we used face/name association test. Our data demonstrate that the increased body mass weight may have a negative effect on some cognitive function such as declarative memory. S t r e s z c z e n i e Wyniki dotychczas przeprowadzonych badań wykazały, że rozwój nadwagi oraz otyłości oprócz negatywnego wpływu na funkcjonowanie układu sercowonaczyniowego czy też oddechowego może również prowadzić do powstawania niekorzystnych zmian w funkcjonowaniu ośrodkowego układu nerwowego. Zbadano zależność pomiędzy wartością wskażnika masy ciała a zdolnościami poznawczymi w trzech grupach wolontariuszy: osób otyłych
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