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Validity of the ithleteTMSmart Phone Application for Determining Ultra-Short-Term Heart Rate Variability

100%
Flatt A. A., Esco M. R.
Journal of Human Kinetics
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2013
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vol. 39
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issue 1
85-92
EN
The purpose of this investigation was to cross-validate the ithleteTM heart rate variability smart phone application with an electrocardiograph for determining ultra-short-term root mean square of successive R-R intervals. The root mean square of successive R-R intervals was simultaneously determined via electrocardiograph and ithleteTM at rest in twenty five healthy participants. There were no significant differences between the electrocardiograph and ithleteTM derived root mean square of successive R-R interval values (p > 0.05) and the correlation was near perfect (r = 0.99, p < 0.001). In addition, the ithleteTM revealed a Standard Error of the Estimate of 1.47 and Bland Altman plot showed that the limits of agreement ranged from 2.57 below to 2.63 above the constant error of -0.03. In conclusion, the ithleteTM appeared to provide a suitably accurate measure of root mean square of successive R-R intervals when compared to the electrocardiograph measures obtained in the laboratory within the current sample of healthy adult participants. The current study lays groundwork for future research determining the efficacy of ithleteTM for reflecting athletic training status over a chronic conditioning period.
2
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Diving and autonomic cardiovascular system regulation in persons with paraplegia

89%
Graczyk D.
Medical Rehabilitation
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2010
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vol. 14(1)
25-29
PL
Wstęp: Nurkowanie staje się popularną formą aktywności wśród osób niepełnosprawnych, stwarzającą szczególne warunki oddziaływania rehabilitacyjnego. Korzystnie wpływa na zdolności ruchowe i stan psychiczny. W środowisku wodnym fizyczne ograniczenia zmniejszają się, a niepełnosprawni odkrywają nowe możliwości ruchowe własnego ciała. W piśmiennictwie brak jest wystarczających informacji o wpływie nurkowania na różne aspekty fizjologii osób niepełnosprawnych, w tym na autonomiczną regulację czynności układu krąŜenia u osób z uszkodzeniem rdzenia kręgowego. Cel: Zbadanie czy nurkowanie wpływa na równowagę współczulno-przywspółczulną układu autonomicznego u osób z uszkodzeniem rdzenia kręgowego z następową paraplegią. Materiał i metody: Badanie obserwacyjne, seria przypadków. 19 mężczyzn z paraplegią zbadano podczas dwóch odbywających się w wodach otwartych 20-minutowych nurkowań w skafandrach mokrych na głębokość 6 metrów. Badanie obejmowało okres 10 minut przed i 10 minut po 2 rodzajach nurkowania: turystycznym i zadaniowym. Parametry zmienności rytmu zatokowego serca pozyskano za pomocą sport testera Polar Vantage. Wyniki: Nie wykazano istotnego wpływu nurkowania na zmienność rytmu serca. Ujawniono jednak występowanie różnic międzyosobniczych. Wnioski: Nie potwierdzono niekorzystnego wpływu nurkowania na równowagę autonomiczną badanych, jednak występujące różnice międzyosobnicze nakazują ostroŜność w kwalifikowaniu do nurkowania osób z paraplegią.
EN
Background: Diving has become popular among individualss with various kinds of disabilities and may be applied as a rehabilitation method. This form of activity has a beneficial effect on movement abilities and the psychological state. Some physical limitations disappear under water enabling disabled persons to discover new possibilities for their bodies. Yet there is not enough information - about the influence of diving on different aspects of physiology in disabled persons, in particular about sympathetic-parasympathetic balance in cardiovascular system regulation.Aim: To investigate whether diving can influence heart rate variability (HRV) in individuals with paraplegia.Material and methods: In the case series study 19 men with paraplegia were examined during the couse of two 20-minute, 6 meters deep open water dives in wet suits. There were two phases of the investigation: 10 minutes before and 10 minutes after diving. Two kinds of diving were tested: tourist and task diving. HRV parameters measured before and after diving were obtained by means of the sport-tester Polar Vantage .Results: There were no significant changes in heart rate variability after diving but interindividual differences were shown.Conclusions: The unfavourable influence of diving on balance in the autonomic regulation of the cardiovascular system was not confirmed but due to interindividual differences one is unable to foresee heart rate variability changes in persons with paraplegy during diving.
3
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Missing-data imputation using wearable sensors in heart rate variability

75%
Tlija A., Węgrzyn-Wolska K., Istrate D., Tlija A., Węgrzyn-Wolska K., Istrate D.
Bulletin of the Polish Academy of Sciences: Technical Sciences
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2020
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issue 2
4
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Wykrywanie obecności genomu rynowirusa w popłuczynach nosowych u chorych na astmę

51%
Hubalewska-Mazgaj M., Bochenek G., Pulka G., Sanak M.
Zeszyty Naukowe Towarzystwa Doktorantów Uniwersytetu Jagiellońskiego. Nauki Ścisłe
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2010
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issue 1
23-33
EN
Human rhinoviruses (HRV) are one of the nine genera belonging to a large family of Picornaviridae. They are responsible for the most cases of common cold, as well as one third to one half of upper respiratory tract (URT) infections. However, HRV are also associated with more severe illnesses, like acute otitis media, sinusitis and some lower respiratory tract diseases such as pneumonia, wheezing in children and exacerbations of asthma. Viral infections are associated with the majority of asthma exacerbations both in children (80-85%) and adults (75-80%), and about 60% of these are caused by HRV. However, the exact mechanism of HRV-induced exacerbations of the disease is not well understood, which makes it difficult to establish the effective treatment. There have already been many attempts to develop a sensitive and specific method of HRV detection in clinical samples. Some of them were based on virus cultures followed by acid lability test, whereas others implemented the reverse transcription-polymerase chain reaction (RT-PCR) and amplification of conserved sequences of the rhinoviral genome. As numerous of these sequences are common to both rhinoviruses and enteroviruses (EVs), further analyses were necessary, which made those methods laborious, time-consuming and too difficult to use in routine diagnostics. Steininger et al. established an RT-PCR-based sensitive and specific method of rhinovirus detection in clinical samples, which was tested to amplify 87 different tissue-culturegrown serotypes of HRV. The aim of this study was to evaluate a modified RT-PCR based method of HRV detection in clinical samples obtained from patients with asthma exacerbations. We collected 41 nasal lavages from patients with asthma exacerbations who received hospital treatment either following an admission or in an out-patient clinic. HRV was found in 22 cases (54%), which corresponded well with the published data.
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