R
Ritva Luukkonen
Researcher at Finnish Institute of Occupational Health
Publications - 124
Citations - 9547
Ritva Luukkonen is an academic researcher from Finnish Institute of Occupational Health. The author has contributed to research in topics: Asthma & Occupational asthma. The author has an hindex of 41, co-authored 119 publications receiving 8688 citations. Previous affiliations of Ritva Luukkonen include University of Helsinki.
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Journal ArticleDOI
Testing linearity against smooth transition autoregressive models
TL;DR: In this paper, a general univariate smooth transition autoregressive, STAR, model is studied and three tests for testing linearity against STAR models are presented. But the power of the tests in small samples is investigated by simulation when the alternative is the logistic STAR model.
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Low back pain in relation to lumbar disc degeneration
Katariina Luoma,Hilkka Riihimäki,Ritva Luukkonen,Raili Raininko,Eira Viikari-Juntura,Antti Lamminen +5 more
TL;DR: An increased risk of LBP (including all types) was found in relation to all signs of disc degeneration and sciatic pain with posterior disc bulges, and low back pain is strongly associated with occupation.
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Work stress and risk of cardiovascular mortality: prospective cohort study of industrial employees
Mika Kivimäki,Päivi Leino-Arjas,Ritva Luukkonen,Hilkka Riihimäki,Jussi Vahtera,Juhani Kirjonen +5 more
TL;DR: High job strain and effort-reward imbalance seem to increase the risk of cardiovascular mortality, and the evidence from industrial employees suggests that attention should be paid to the prevention of work stress.
Journal ArticleDOI
Sleep Restriction Increases the Risk of Developing Cardiovascular Diseases by Augmenting Proinflammatory Responses through IL-17 and CRP
Wessel M. A. van Leeuwen,Maili Lehto,Piia Karisola,Harri Lindholm,Ritva Luukkonen,Mikael Sallinen,Mikko Härmä,Tarja Porkka-Heiskanen,Harri Alenius +8 more
TL;DR: 5 nights of sleep restriction increased lymphocyte activation and the production of proinflammatory cytokines including IL-1β IL-6 and IL-17; they remained elevated after 2 nights of recovery sleep, accompanied by increased heart rate and serum CRP, 2 important risk factors for cardiovascular diseases.
Journal ArticleDOI
Disc degeneration of the lumbar spine in relation to overweight.
M. Liuke,Svetlana Solovieva,A. Lamminen,Katariina Luoma,Katariina Luoma,Päivi Leino-Arjas,Ritva Luukkonen,Hilkka Riihimäki +7 more
TL;DR: Evidence is provided that the BMI above 25 kg/m2 increases the risk of lumbar disc degeneration and overweight at young age seems to be particularly detrimental.