Wyniki wyszukiwania - AGRO

1

Changing difficulty level in a one-dimensional tracking task and corresponding heart rate changes

100%

Bohdanecky Z., Indra M., Radil T.

Acta Neurobiologiae Experimentalis

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1995

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tom 55

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nr 1

2

The effect of breath-hold diving on selected adaptive mechanisms in the circulatory-respiratory system in simulated static and dynamic apnoea

88%

Solich-Talanda M., Mikolajczyk R., Roczniok R., Zebrowska A.

Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport

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2019

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tom 11

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nr 1

3

Influence of age on the immediate heart rate response to the active orthostatic test

88%

Cybulski G., Niewiadomski W.

Journal of Physiology and Pharmacology

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2003

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tom 54

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nr 1

Dynamics of the heart rate changes following standing up from the supine position was investigated in 41 healthy men aged 20 to 59 years, classified according to the age into three groups: (22 to 26 yrs, n=14), (33 to 49, yrs, n=13) and (51 to 59 yrs, n=14). The protocol consisted of twice repeated sequence: lying down - standing up - lying down. The subjects remained in each position for 8 minutes. The average and beat-to-beat heart rate (HR) were continuously calculated using the specialized computer program analysing ECG. The initial response was analysed using both the indices known from literature and newly introduced by the authors. The high reproducibility of the response was observed and the correlations between the indices were analysed. The relationship between the indices characterising the pattern of the response and age were analysed using the linear regression model. Most of these indices showed a tendency towards attenuation of the HR response with age. The closest correlation with age was found for the index characterising the initial increase of HR after standing up (r=-0.610, p<0.001). There were no correlations between the indices of HR response to standing up and the height or body mass of the healthy subjects.

4

Central control of heart rate changes during visual affective processing as revealed by fMRI

88%

Kuniecki M., Urbanik A., Sobiecka B., Kozub J., Binder M.

Acta Neurobiologiae Experimentalis

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2003

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tom 63

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nr 1

5

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Forms of physiological aliasing within the heart rate fluctuations by higher frequent respiratory movements

88%

Zwiener U., Luthke B., Bauer R., Richter A., Hoyer D., Wagner H.

Journal of Physiology and Pharmacology

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1994

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tom 45

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nr 4

6

The influence of intention implementation on throw effectiveness of young basketball players

75%

Wilczynska D., Lipinska P., Wolujewicz-Czerlonko M.

Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport

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2014

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tom 06

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nr 4

Background: The purpose of the following research was to find out the influence of imaginary training based on intention implementation on throw effectiveness of young basketball players, both male and female in stressogenic situations. Individual differences (action vs state orientation) between players were also measured in this research. Material/Methods: 76 players (32 females and 44 males) in the cadet category (15-16 years old) from basketball clubs of Gdansk, Gdynia and Sopot took part in this research. In the first stage all players did a throw efficiency test ERPE 05 under two conditions, and their heart rate was measured. Then players were randomly assigned to one of two groups. The first one did imaginary training based on the influence of intention implementation for 10 days, while the other did not. After 10 days ERPE 05 test under two conditions was run again. Results: Test results showed that intention implementation does not influence effectiveness improvement in stressogenic conditions as far as state-oriented players are concerned, but it does lower the physiological cost of physical effort in form of a decreased heart rate. Conclusions: This research proves that visualization training based on implementation instructions does influence young players’ physiology and significantly lowers their heart rate under stressogenic conditions. However useful, visualization techniques used in this research still need other tests and should be applied for a longer period of time to acutely show how they affect young players’ mental preparation.

7

Cardio-respiratory interaction and autonomic dysfunction in obesity

75%

Tonhajzerova I., Javorka M., Trunkvalterova Z., Chroma O., Javorkova J., Lazarova Z., Ciljakova M., Javorka K.

Journal of Physiology and Pharmacology. Supplement

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2008

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tom 59

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nr 6

709-718

8

Respiratory sinus arrhythmia among menopausal women after exposition to extremely-low-frequency magnetic fields

75%

Pecyna M. B.

Journal of Physiology and Pharmacology. Supplement

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2005

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tom 56

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nr 4

179-184

In this paper I endeavored to show that respiratory sinus arrhythmia closely corresponds with the perception of psychosomatic complaints. To achieve this aim, two groups of menopausal women, each consisting of 85 subjects, were compared, one of which exhibiting troubles with falling asleep, frequent awakening at night, and sweating and fatigability sensations during the day and the other being asymptomatic. Comparative non-invasive biometric analysis included the following: total, inspiratory, and expiratory heart rate, breathing rate, and respiratory sinus arrhythmia. Overall, I found that the respiratory sinus arrhythmia and heart and breathing rates were substantially greater in women with psychosomatic complaints. In this group, the cardiorespiratory indices were further enhanced following exposure to extremely-low-frequency magnetic fields. The study suggests the predominance of sympathetic aspects of the autonomic nervous system as a result of psychosomatic complaints in menopausal women and calls for a caution in using the extremely-low-frequency magnetic stimulation in such women, which may exacerbate untoward heart and respiratory responses.

9

The potential role of the nodose ganglion adenosine A1 receptor in regulation of breathing in anaesthetized rats

75%

Kaczynska K., Szereda-Przestaszewska M.

Journal of Physiology and Pharmacology

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2008

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tom 59

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nr 4

759-770

The respiratory effects of stimulation of adenosine A1 receptors were studied in spontaneously breathing rats that were either (1) neurally intact and subsequently bilaterally vagotomized in the neck, or (2) neurally intact and subjected to supranodosal vagotomy or (3) midcervically vagotomized before and after pharmacological blockade of A1 receptors. Before neural interventions an intravenous bolus of the A1 receptor agonist N6-cyclopentyladenosine (CPA, 5 µg kg-1) decreased breathing rate, tidal volume, mean arterial blood pressure (MAP) and heart rate. After section of the midcervical vagi, CPA still decreased respiratory rate and tidal volume. Supranodose vagotomy abolished the fall in respiratory rate but did not affect the depression of tidal volume. Blockade of A1 receptors with intravenous doses of DPCPX (100 µg kg-1) eliminated all respiratory effects of CPA challenge. In all the neural states, CPA caused significant falls in mean arterial blood pressure and heart rate. DPCPX pre-treatment prevented these cardiovascular effects. The present data suggest that: (1) CPA-evoked activation of A1 receptors decreases breathing rate and tidal volume and this occurs central to the cervical vagi; (2) supranodosal vagotomy prevents the decrease in breathing rate, which is presumably due to stimulation of nodosal A1 receptor; and (3) depression of tidal volume and the hypotensive response result from the excitation of central nervous A1 expressing neurones.

10

The level of intelligence and heart rate variability in men after myocardial infarction

75%

Pecyna M. B.

Journal of Physiology and Pharmacology. Supplement

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2006

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tom 57

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nr 4

283-287

Heart rate variability (HRV) reflects periodic changes taking place in heart rhythm, which are controlled by the autonomic nervous system (ANS) and external factors. The aim of the present study was to assess the relationship between HRV and the level of intelligence using the Raven Advanced Matrices Test in 95 men (mean age 41.6 ±3.7SD yr) who experienced myocardial infarction during two years preceding the psychophysiological examination. HRV was analyzed from the EEG signal recordings in the time and spectral domains. It was found that post-myocardial infarct men of the higher than average intelligence had significantly increased HRV; the finding was reflected in the analysis of both time and frequency domains. Although both sympathetic and parasympathetic components showed an increase in the frequency domain, the former did disproportionately more, achieving substantial predominance. The results indicate that active mental processes and attitude, linked to a higher intelligence level, might be a beneficial prognostic marker, as is higher HRV, for the overall post-infarction cardiac mortality and for return of such subjects back to normal life. The corollary is that the assessment of IQ in post-infarction patients seems a simple screening method that may help presage the health and social course the patient takes.

11

Myosin heavy chain composition in the vastus lateralis muscle in relation to oxygen uptake and heart rate during cycling in humans

75%

Majerczak J., Nieckarz Z., Karasinski J., Zoladz J. A.

Journal of Physiology and Pharmacology

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2014

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tom 65

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nr 2

12

Effect of classic massage therapy on the heart rate of horses working in hippotherapy. Case study

75%

Lojek J., Lojek A., Soborska J.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2013

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tom 52

The objective of this study was determine the effect of classical massage therapy on heart rate in horses working in hippotherapy. We hypothesised that massage can be used to improve the horse's welfare, because it mentally relaxes the horse. The relationship between variables were examined to determine whether the selected factors (use or non-use of massage, the method of securing the patient on the horse, way of getting on a horse, place of treatment) influenced the heart rate of two horses working in hippotherapy. The results showed significant but very different effects on heart rate of particular horses subjected to a massage. It was also shown that heart rate of horses working in hippotherapy is highly influenced by environmental factors.

13

Relation between fearfulness level and maternal behaviour in Arab mares

75%

Budzynska M., Krupa W.

Animal Science Papers and Reports

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2011

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tom 29

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nr 2

The study aimed at testing the hypothesis that mares’ fearfulness is a potential factor differentiating the level of their maternal behaviour. Twenty purebred Arab mares were used. In part one of the study fearfulness of mares without foals was assessed by their behavioural reactivity and heart rate in response to rotating black-white squares (fearfulness test). On that basis the mares were classified into three groups: (1) fearless, n=8, (2) medium-fearful, n=7 and (3) fearful, n=5. In part two,maternal behaviour of mares was assessed in two sessions of separation test: 3 min dam’s partial separation from foal (mare out of box, but with visual, auditory and olfactory contact with foal) and 3 min full separation (mare out of stable, no contact with foal). Locomotor activity, vocalization and defecation frequency as well as heart rate in mares were recorded during both separation tests. The results showed a relation between mares’ fearfulness and their maternal behaviour. Fearless dams vocalized more (10.63±5.32, mean rank 13.00, P<0.05) and showed higher heart rate (138.00±22.66 beats/min, mean rank 15.40, P<0.05) when totally separated from their foals, compared to fearful dams (4.00±3.74 calls, mean rank 6.10; 116.00±20.32 beats/min, mean rank 7.23, P<0.05). Thus, fearless dams generally displayed higher maternal ability which is vitally important in successful breeding. In conclusion, selecting for low fearfulness ensures appropriate maternal behaviour of the brood mares.

14

Characteristics of differences in energy expenditure and heart rate during indoor and outdoor field hockey matches

75%

Konarski J., Strzelczyk R.

Studies in Physical Culture and Tourism

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2009

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tom 16

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nr 2

15

Hypoventilation in chronic mountain sickness: a mechanism to preserve energy

75%

Zubieta-Calleja G. R., Paulev P.-E., Zubieta-Calleja L., Zubieta-Calleja N., Zubieta-Castillo G.

Journal of Physiology and Pharmacology. Supplement

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2006

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tom 57

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nr 4

425-430

Chronic Mountain Sickness (CMS) patients have repeatedly been found to hypoventilate. Low saturation in CMS is attributed to hypoventilation. Although this observation seems logical, a further understanding of the exact mechanism of hypoxia is mandatory. An exercise study using the Bruce Protocol in CMS (n = 13) compared to normals N (n = 17), measuring ventilation (VE), pulse (P), and saturation by pulse oximetry (SaO2) was performed. Ventilation at rest while standing, prior to exercise in a treadmill was indeed lower in CMS (8.37 l/min compared with 9.54 l/min in N). However, during exercise, stage one through four, ventilation and cardiac frequency both remained higher than in N. In spite of this, SaO2 gradually decreased. Although CMS subjects increased ventilation and heart rate more than N, saturation was not sustained, suggesting respiratory insufficiency. The degree of veno-arterial shunting of blood is obviously higher in the CMS patients both at rest and during exercise as judged from the SaO2 values. The higher shunt fraction is due probably to a larger degree of trapped air in the lungs with uneven ventilation of the CMS patients. One can infer that hypoventilation at rest is an energy saving mechanism of the pneumo-dynamic and hemo-dynamic pumps. Increased ventilation would achieve an unnecessary high SaO2 at rest (low metabolism). This is particularly true during sleep.

16

Modelling of artery stiffness for driver’s heart rate monitoring systems development

75%

Kernytskyy I., Yakovenko Y., Storchun Y., Horbay O., Humenyuk R., Sholudko Y.

Acta Scientiarum Polonorum. Architectura

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2020

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tom 19

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nr 3

17

Behavioural reactivity and heart rate of half-bred stallions in a novel stimulus test

75%

Kamieniak J., Soltys L., Krupa W., Budzynska M., Tietze M.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica

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2016

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tom 34

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nr 3

18

Evoked cardiac response components in cognitive processing: differential effects of amyotrophic lateral sclerosis

75%

Kaiser J., Wronka E., Barry R. J., Szczudlik A.

Acta Neurobiologiae Experimentalis

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1999

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tom 59

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nr 4

19

The effect of thymic hormones [TFX] on lymphocyte subpopulations and proliferation after maximal physical effort

75%

Tchorzewski H., Zeman K., Lewicki R., Pokoca L., Fornalczyk-Wachowska E., Kantorski J., Majewska E., Golinska A.

Archivum Immunologiae et Therapiae Experimentalis

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1992

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tom 40

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nr 2

20

Rest HR values and selected blood parameters in sport ponies

75%

Szarska E., Jonca M., Frankiewicz-Jozko A.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Zootechnika

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2004

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tom 50

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