Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Heidi Jurvelin"'
Autor:
Laura Nauha, Vahid Farrahi, Heidi Jurvelin, Timo Jämsä, Maisa Niemelä, Maarit Kangas, Raija Korpelainen
Publikováno v:
Annals of Medicine, Vol 55, Iss 1 (2023)
AbstractObjectives Discriminating sleep period from accelerometer data remains a challenge despite many studies have adapted 24-h measurement protocols. We aimed to compare and examine the agreement among device-estimated and self-reported bedtime, w
Externí odkaz:
https://doaj.org/article/3057d82031b047feb3228231e8a92e18
Autor:
Jari Jokelainen, Markku Timonen, Sirkka Keinänen-Kiukaanniemi, Pirjo Härkönen, Heidi Jurvelin, Kadri Suija
Publikováno v:
Scandinavian Journal of Primary Health Care, Vol 37, Iss 3, Pp 353-357 (2019)
Objective: The main objective of this study was to investigate the psychometric properties of the Zung Self-Rating Depression Scale (SDS) and evaluate screening parameters capability of the SDS with the Beck Depression Inventory (BDI-21) among the el
Externí odkaz:
https://doaj.org/article/f6be28fbf50647b6a2742bebffdf3136
Autor:
Heidi Jurvelin, Laura Nauha, Maarit Kangas, Leena Ala-Mursula, Timo Jämsä, Maisa Niemelä, Raija Korpelainen
Publikováno v:
Scandinavian Journal of Medicine & Science in Sports. 30:1930-1938
Morning, day, or evening chronotypes differ by the circadian timing of alertness and the preferred timing of sleep. It has been suggested that evening chronotype is associated with low physical activity (PA) and high sedentary time (SED). Our aim was
Publikováno v:
Medicine & Science in Sports & Exercise. 52:86-93
Purpose: To compare training load and energy expenditure during an 8-week military BT period among individuals having different fitness level using objective measurements in an authentic environment. Methods: Thirty-four voluntary male conscripts (ag
ObjectivesThis is the first general population study to evaluate whether evening chronotypes (E) have poorer work ability (WA) and higher probability for early disability pensions (DPs) than morning types (M) in middle age.MethodsAmong non-retired in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::755ae46a2139f9b97d8aa3e44726157a
http://urn.fi/urn:nbn:fi-fe2021121560680
http://urn.fi/urn:nbn:fi-fe2021121560680
Publikováno v:
Aerospace medicine and human performance. 86(4)
Rapid travel over multiple time zones usually results in transient de-synchronization between environmental time and the biological clock of the individual. Common symptoms are increased daytime sleepiness, reduced sleep duration and quality, and per
Autor:
Juhani Leppäluoto, Melanie Rüger, Timo Takala, Olli Vakkuri, Seppo Saarela, Heidi Jurvelin, Juuso Nissilä, Lilli Heberg
Publikováno v:
Chronobiology international. 31(7)
We investigated whether transcranial bright light (TBL) affects nocturnal melatonin and cortisol secretion in sham-controlled crossover trial. Young healthy adults were exposed in random order to 24 minutes of TBL or sham exposure via ear canals at 0
Autor:
Juuso Nissilä, Eka Roivainen, Antti M. Kiviniemi, Timo Takala, Arto J. Hautala, Mikko P. Tulppo, Vesa Kiviniemi, Heidi Jurvelin
Publikováno v:
Frontiers in Physiology
Frontiers in Physiology, Vol 5 (2014)
Frontiers in Physiology, Vol 5 (2014)
Purpose: A recent study suggests that transcranial brain targeted light treatment via ear canals may have physiological effects on brain function studied by functional magnetic resonance imaging (fMRI) techniques in humans. We tested the hypothesis t
Autor:
Heidi Jurvelin, Pirkko Räsänen, Anu Liettu, Antti Aunio, Timo Takala, Jari Jokelainen, Juuso Nissilä, Markku Timonen
Publikováno v:
Medical hypotheses. 78(4)
Bright light therapy (BLT) is widely accepted as first-line treatment of seasonal affective disorder (SAD). However, the mechanism of action of BLT is still widely unknown. On the other hand, in mammals, light penetrates the skull bone and reaches th
Autor:
Pekka Siirtola, Hannu Kinnunen, Heidi Jurvelin, Perttu Laurinen, Eija Haapalainen, Juha Röning
Publikováno v:
IRI
This paper introduces a novel algorithm for estimating energy expenditure during physical activity. The estimation is based on acceleration data measured from a wrist-worn accelerometer. Simultaneous measurements of acceleration and oxygen consumptio