Searched for: subject%3A%22Analysis%255C%2Bof%255C%2BVariance%22
(61 - 80 of 108)
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Visser, B. (author), de Looze, M.P. (author), Veeger, D. (author), Douwes, M. (author), Groenesteijn, L. (author), de Korte, E. (author), van Dieën, J.H. (author), TNO Preventie en Gezondheid (author)High precision demands in manual tasks can be expected to cause more selective use of a part of the muscular synergy involved. To test this expectation, load sharing of the index finger and middle finger was investigated during a pinching task. Myoelectric activation of lower arm and neck-shoulder muscles was measured to see if overall level of...article 2003
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Sierksma, A. (author), van der Gaag, M.S. (author), Grobbee, D.E. (author), Hendriks, H.F.J. (author)1. The present study investigated the acute and chronic effect of dinner with alcoholic beverages on serum nitric oxide (NO) metabolites, namely nitrate and nitrite (NOx), in 11 healthy, non-smoking middle-aged men. 2. In a randomized, diet-controlled, cross-over trial, subjects consumed dinner with four glasses of red wine, beer, spirits (Dutch...article 2003
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Nieuwenhuijsen, K. (author), de Boer, A.G.E.M. (author), Verbeek, J.H.A.M. (author), Blonk, R.W.B. (author), van Dijk, F.J.H. (author)Aims: To (1) evaluate the psychometric properties and (2) examine the ability to detect cases with anxiety disorder and depression in a population of employees absent from work because of mental health problems. Methods: Internal consistency, construct validity, and criterion validity of the Depression Anxiety Stress Scales (DASS) were assessed....article 2003
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TNO Arbeid (author), van den Heuvel, S.G. (author), de Looze, M.P. (author), Hildebrandt, V.H. (author), Thé, K.H. (author)Objectives. This study evaluated the effects on work-related neck and upper-limb disorders among computer workers stimulated (by a software program) to take regular breaks and perform physical exercises. Possible effects on sick leave and productivity were studied as well. Methods. A randomized controlled design was used with cluster...article 2003
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van Erp, J.B.F. (author), Padmos, P. (author)Indirect viewing systems such as tv cameras can potentially support drivers under low visibility conditions or when the driver's field of view (FOV) is restricted. In three experiments, we identified the critical image parameters of such systems on vehicle control. We used a taskbattery that measured lateral and longitudinal vehicle control in...article 2003
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Voorrips, L.E. (author), Brants, H.A.M. (author), Kardinaal, A.F.M. (author), Hiddink, G.J. (author), van den Brandt, P.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Background: Conjugated linoleic acid (CLA), which is present in milk products and meat from ruminants, appears to have anticarcinogenic activity against breast cancer in animal and in vitro experiments. To date, few epidemiologic data are available in humans. Objective: This study evaluated the relation between intakes of CLA and other fatty...article 2002
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Malchaire, J. (author), Geng, Q. (author), Den Hartog, E. (author), Havenith, G. (author), Holmer, I. (author), Piette, A. (author), Powell, S.L. (author), Rintamäki, H. (author), Rissanen, S. (author), TNO Technische Menskunde (author)Objectives. At the request of the European Commission and in the framework of the European Machinery Directive, research was conducted jointly in five different laboratories to develop specifications for surface temperature limit values for the gripping and handling of cold items. Methods. Four hundred and fourteen experiments were run where...article 2002
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Theunissen, N.C.M. (author), Kamp, G.A. (author), Koopman, H.M. (author), Zwinderman, K.A.H. (author), Vogels, T. (author), Wit, J.-M. (author), TNO Preventie en Gezondheid (author)Objective: Changes in health-related quality of life (HRQOL) and self-esteem were studied in children with idiopathic short stature (ISS) participating in a study on the effect of growth hormone treatment. Study design: Prepubertal children (n = 36) with ISS were randomly assigned to a treatment or control group. Children with ISS, their parents...article 2002
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Huijbregts, S.C.J. (author), de Sonneville, L.M.J. (author), Licht, R. (author), van Spronsen, F.J. (author), Verkerk, P.H. (author), Sergeant, J.A. (author)Fifty-seven 7-14-year-old early- and continuously treated phenylketonuria (PKU) patients and 65 matched controls performed a sustained attention task. PKU patients with plasma phenylalanine (phe) levels higher than 360 μmol/l at the time of testing exhibited, compared to controls, lower speed of information processing, a lower ability to inhibit...article 2002
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Sierksma, A. (author), van der Gaag, M.S. (author), van Tol, A. (author), James, R.W. (author), Hendriks, H.F.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Background: The inverse association between moderate drinking and coronary heart disease mortality is well established. This study was performed to investigate the kinetics of the alcohol-induced increases in apo A-1, HDL cholesterol, and paraoxonase (PON) activity, as well as to study whether the alcohol-induced increases in PON activity differ...article 2002
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TNO Kwaliteit van Leven (author), Hehenkamp, W.J.K. (author), Rang, S. (author), van Goudoever, J. (author), Bos, W.J.W. (author), Wolf, H. (author), van der Post, J.A.M. (author)Background: Continuous beat-to-beat noninvasive blood pressure (BP) measurement is possible with Portapres®. It constructs finger arterial waveforms beat-to-beat. Dedicated software is used to analyze the arterial waveforms. A new technique has been developed to reconstruct brachial intraarterial pressure that uses return to flow (RTF). This...article 2002
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van der Laan, W. (author), Molenaar, E. (author), Ronday, K. (author), Verheijen, J. (author), Breedveld, F. (author), Greenwald, R. (author), Dijkmans, B. (author), Tekoppele, J. (author), Gaubius instituut TNO (author)Objective. To investigate the effects of doxycycline on disease activity and joint destruction in patients with rheumatoid arthritis (RA). Methods. A 36 week double blind, placebo controlled crossover trial was conducted. Patients (n = 66) received 50 mg doxycycline or placebo twice a day during 12, 24, or 36 weeks. Patient assessments were...article 2001
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Hendriks, H.F.J. (author), van Haaren, M.R.T. (author), Leenen, R. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Background: Moderate alcohol consumption is associated with a reduced coronary heart disease (CHD) risk. Epidemiologic studies have provided conflicting data which suggests that CHD protection may be modulated or may not be modulated by a person's CHD risk profile. Methods: We examined the effects of moderate alcohol consumption (35 g/day) on...article 2001
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TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author), Olmedilla, B. (author), Granado, F. (author), Southon, S. (author), Wright, A.J.A. (author), Blanco, I. (author), Gil-Martinez, E. (author), van den Berg, H. (author), Corridan, B. (author), Roussel, A.M. (author), Chopra, M. (author), Thurnham, D.I. (author)High intakes of fruits and vegetables, or high circulating levels of their biomarkers (carotenoids, vitamins C and E), have been associated with a relatively low incidence of cardiovascular disease, cataract and cancer. Exposure to a high fruit and vegetable diet increases antioxidant concentrations in blood and body tissues, and potentially...article 2001
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Kerstholt, J.H. (author), Passenier, P.O. (author)Automation has changed the role of human operators from direct manual control to supervision. Their main task is to monitor whether system performance remains within pre-specified ranges and intervention is only required in unusual situations. One of the consequences is a loss of situation awareness, which significantly affects performance in...article 2000
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Daanen, H.A.M. (author), van Ruiten, H.J.A. (author), TNO Human Factors, (author)A significant reduction in cold-induced vasodilation (CIVD) is observed at high altitudes. No agreement is found in the literature about acclimatization effects on CIVD. Two studies were performed to investigate the effect of altitude acclimatization on CIVD. In the first study 13 male subjects immersed the distal phalanx of the left middle...article 2000
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Mack, S. (author), Bercovici, D. (author), de Groote, G. (author), Leclercq, B. (author), Lippens, M. (author), Pack, M. (author), Schutte, J.B. (author), van Cauwenberghe, S. (author), Instituut voor Landbouwkundig Onderzoek en Biochemische Produkten TNO (author)1. The aim of the study was to determine the ideal ratio of the essential amino acids lysine (Lys), methionine (Met), threonine (Thr), tryptophan (Trp), arginine (Arg), valine (Val) and isoleucine (Ile) and to assess the required dietary lysine concentration for optimum performance in broiler chickens of 2 commercial strains from 20 to 40 d of...article 1999
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Daanen, H.A.M. (author), Ducharme, M.B. (author)BACKGROUND: Exposure of the fingers to severe cold leads to cold-induced vasodilation (CIVD). The influence of ambient temperature on the CIVD-response is well understood and documented, but the response of CIVD to hyperthermia and mild hypothermia has rarely been investigated. METHODS: To investigate the influence of body thermal status on the...article 1999
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van den Heuvel, E.G.H.M. (author), Muys, T. (author), van Dokkum, W. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Background: In rats, nondigestible oligosaccharides stimulate calcium absorption. Recently, this effect was also found in human subjects. Objective: The objective of the study was to investigate whether consumption of 15 g oligofructose/d stimulates calcium absorption in male adolescents. Design: Twelve healthy, male adolescents aged 14-16 y...article 1999
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Turnbull, D. (author), Frankos, V.H. (author), Leeman, W.R. (author), Jonker, D. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)To test for potential estrogenic activity of plant stanols and plant stanol esters, two short-term tests were performed. These were the E-screen test, which measures a substance's ability to induce proliferation of estrogen-responsive human breast adenocarcinoma (MCF-7) cells in culture, and an in vivo test, which measures uterotrophic activity...article 1999
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