Search results for "SYK"

Validity of the Wrist-Worn Polar Vantage V2 to Measure Heart Rate and Heart Rate Variability at Rest

2021

Heart rate (HR) and heart rate variability (HRV) can be monitored with wearable devices throughout the day. Resting HRV in particular, reflecting cardiac parasympathetic activity, has been proposed to be a useful marker in the monitoring of health and recovery from training. This study examined the validity of the wrist-based photoplethysmography (PPG) method to measure HR and HRV at rest. Recreationally endurance-trained participants recorded pulse-to-pulse (PP) and RR intervals simultaneously with a PPG-based watch and reference heart rate sensor (HRS) at a laboratory in a supine position (n = 39; 5-min recording) and at home during sleep (n = 29; 4-h recording). In addition, analyses wer…

Plasma diagnostic tools for ECR ion sources : What can we learn from these experiments for the next generation sources

2019

International audience; The order-of-magnitude performance leaps of ECR ion sources over the past decades result from improvements to the magnetic plasma confinement, increases in the microwave heating frequency, and techniques to stabilize the plasma at high densities. Parallel to the technical development of the ion sources themselves, significant effort has been directed into the development of their plasma diagnostic tools. We review the recent results of Electron Cyclotron Resonance Ion Source (ECRIS) plasma diagnostics highlighting a number of selected examples of plasma density, electron energy distribution, and ion confinement time measurements, obtained mostly with the second-gener…

Hyvää elämää ja tietoista painonhallintaa : hyväksymis-ja omistautumisterapiaan pohjautuvan painonhallintaohjelman toimivuus ja hyväksyttävyys

2017

Tausta: Ylipainon hoidossa käytetään useimmiten kognitiiviseen rajoittamiseen pohjautuvia menetelmiä, joilla kuitenkin saavutetaan vain harvoin pysyviä tuloksia. On havaittu, että painonhallinnan onnistumista voivat selittää syömiskäyttäytymisen taustalla olevat psykologiset tekijät, kuten psykologinen joustavuus, jota hyväksymis- ja omistautumisterapiassa pyritään lisäämään. Alustavat tutkimukset ovat antaneet kannustavia tuloksia hyväksymis- ja omistautumisterapiaa ja elintapaohjausta yhdistävien interventioiden toimivuudesta ainakin keskipitkän välin painonhallinnassa. Tavoitteet: Tutkimuksen tavoitteena oli tutkia hyväksymis- ja omistautumisterapiaa ja elintapaohjausta yhdistävän lyhyti…

Aggressiivinen musiikki ja sen psyykkiset taustat kuuden musiikkiterapiapotilaan tapauksessa

1998

Ketone body 3-hydroxybutyrate as a biomarker of aggression

2021

Human aggression is a complex behaviour, the biological underpinnings of which remain poorly known. To gain insights into aggression biology, we studied relationships with aggression of 11 low-molecular-weight metabolites (amino acids, ketone bodies), processed using 1H nuclear magnetic resonance spectroscopy. We used a discovery sample of young adults and an independent adult replication sample. We studied 725 young adults from a population-based Finnish twin cohort born 1983–1987, with aggression levels rated in adolescence (ages 12, 14, 17) by multiple raters and blood plasma samples at age 22. Linear regression models specified metabolites as the response variable and aggression ratings…

Evolution of conflict and cooperation in human groups

2018

The scale of human cooperation and conflict is outstanding and evolutionarily challenging to explain. Cooperative and hostile behaviours have deep evolutionary roots and adaptive functions. However, theoretical models differ in how they explain these functions. Thus, my thesis aims to empirically test functional predictions about human cooperation and conflict. These experiments use a behavioural ecological framework, and pay also attention to the effects of social and developmental environments. In the first two chapters, I studied how group composition affects cooperation and individual success, and how people react to information of each other’s cooperative behaviour. I found that cooper…

A life time in exile : Finnish war children in Sweden after the war : an interview study with a psychological and psychodynamic approach

2018

This study is based upon in-depth interviews with ten Finnish war children who were evacuated to Sweden during the Second World War (1939 -1944) and who did not return permanently to Finland after the war. This interpretative and qualitative interview study of war children seems to be the only one of its kind. The interviews were carried out in 2007 in Stockholm. At the time of the evacuation nine of the children were between two and five years of age and one was seven years old. At the time of the interviews they were approaching their seventieth birthday. The interviewees were asked to tell about their life. The method for this study was an application of Grounded Theory and Adult Attachm…

'Hiljainen todistaja'. Mietintää akateemisen tilan laadusta.

2003

Yliopisto-opetuksen ja oppimisen laatu voidaan käsittää hyvin monella eri tavalla. Tässä teoksessa laatua on käsitelty usealta eri näkökulmalta: esimerkiksi käsitteellis teoreettisen analyysin keinoin, korkeakoulupolitiikan viitekehyksestä ja suhteutta maila se pedagogiseen kohtaamiseen. Käsillä oleva teksti tuo uuden näkökulman laadun käsitteeseen: onko myös fyysinen ympäristö ja -tila osa yliopisto-opetuksen ja -oppimisen sekä tutkimustyön laatua? Tilaa ja ympäristöä ei yleensä mielletä laatutekijäksi. Mikä merkitys tilalla on kokemuksiimme, työssä viihtymiseen ja työn tuloksiin? Tässä artikkelissa keskityn ainoastaan joidenkin yliopistollisen tilan piirteiden pohtimiseen: ympäristön mykk…

Entisestä Neuvostoliitosta tulleiden paluumuuttajien sopeutuminen Jyväskylässä

2000

The effects of technology-utilising rehabilitation on rehabilitees' physical activity: a prospective cohort study

2021

The aim of this study was to investigate the effects of technology-utilising rehabilitation on different intensities of physical activity (PA) and determine the explanatory factors of PA change. This was a prospective cohort study. Cardiac, musculoskeletal and vocational rehabilitees (N = 36) had 6 months of rehabilitation, which included guided training and counselling face-to-face as well as through distance technology. PA (total, light, moderate, vigorous) was measured by an activity tracker. Biopsychosocial questionnaires, waist circumference, PA measurements and m-coach activity were used to determine the factors that influence PA change. Technology-utilising rehabilitation improved li…