Matís Staff

Alfons Ramel

Project Manager

Group: Bioactive Compounds

Phone: +354 4225000 /

Email: alfons.ramel@matis.is

Focus Areas:

Nutrition, Teaching, Older adults, Intervention studies

Peer-reviewed Articles:
  • Elidottir AS, Sveinsdóttir K, Ingadottir B, Geirsdottir O, Jonsson PV, Rothenberg E, Hardardottir I, Freysdottir J, Ramel A. Seaweed extract improves carbohydrate metabolism in overweight and obese adults - (2021). Current Nutrition & Food Science, 2, 216-224

  • Arnarson, A., Ólafsdóttir, A., Ramel, A. Martinsdóttir, E., Reykdal, Ó., Þórsdóttir, I., Þorkelsson, G .. Sensory analysis and consumer surveys of fat- and salt-reduced meat products and their use in an energy-reduced diet in overweight individuals - (2011). International Journal of Food Sciences and Nutrition, 62(8), 872-880

  • Sveinsdottir, K., Martinsdottir, E., Ramel, A .. Blood pressure-lowering effects of long chain n-3 fatty acids from meals enriched with liquid fish oil and from microencapsulated powder - (2016). International Journal of Food Sciences and Nutrition, 67(8), 1017-1023

  • Hinriksdottir HH, Jonsdottir VL, Sveinsdottir K., Martinsdottir E., Ramel A .. Bioavailability of long-chain n-3 fatty acids from enriched meals and from microencapsulated powder - (2015). European Journal of Clinical Nutrition, 69, 344-348

  • Geirsdottir OG, Chang M, Briem K, Jonsson PV, Thorsdottir I, Ramel A. Determinants of physical function in community dwelling old people. Journal of Geriatrics and Gerontology. 2021, DOI: 10.36150/2499-6564-N261

    Skuladottir SS, Ramel A, Hjaltadottir I, Launer LJ, Cotch MF, Siggeirsdottir K, Gudnason V, Sigurdsson G, Steingrimsdottir L, Halldorsson T. Characteristics of incidence hip fracture cases in older adults participating in the longitudinal AGES-Reykjavik study. Osteoporos Int. 2021;32:243-250.

    Eymundsdottir H, Ramel A, Geirsdottir OG, Skuladottir SS, Gudmundsson LS, Jonsson PV, Gudnason V, Launer L, Jonsdottir MK, Chang M. Body weight changes and longitudinal associations with cognitive decline among community-dwelling older adults. Alzheimers Dement (Amst). 2021 Feb 20;13(1):e12163.

    Jyväkorpi SK, Ramel A, Calvani R, Piotrowicz K, Strandberg TE, Błaszczyk-Bębenek E, Urtamo A, Rempe H, Geirsdóttir Ó, Vágnerová T, Billot M, Larreur A Savera G, Soriano G, Picauron C, Tagliaferri S, Sanchez-Puelles C, Sánchez Cadenas V, Perl A, Tirrel L, Öhman H, Weling-Scheepers C, Ambrosi S, Costantini A, Pavelková K, Freiberger E, Jonsson PV, Landi F,  SPRINTT consortium. The Sarcopenia and Physical frailty in older people: multi-component treatment strategies (SPRINTT) randomized controlled trial: description and the feasibility of the nutrition intervention in frail older Europeans. Eur Geriatr Med. 2021 Apr;12(2):303-312.

    Elidottir AS, Sveinsdottir K, Ingadottir B, Geirsdottir OG, Jonsson PV, Rothenberg E, Hardardottir I, Freysdottir J, Ramel A. Effects of seaweed extract on carbohydrate metabolism and inflammation in overweight and obese adults. Current nutrition and food science. 2021,17:216 – 224.

    Correction to: Skuladottir SS, Ramel A, Hjaltadottir I, Launer LJ, Cotch MF, Siggeirsdottir K, Gudnason V, Sigurdsson G, Steingrimsdottir L, Halldorsson T. Characteristics of incidence hip fracture cases in older adults participating in the longitudinal AGES-Reykjavik study. Osteoporos Int. 2020;31:2501.

    Geirsdottir OG, Chang M, Jonsson PV, Thorsdottir I, Ramel A. Associations of leisure time physical activity with vitamin D status depend on obesity status in community dwelling old adults. Clin Nutr ESPEN. 2020;39:222-226.

    Skuladottir SS, Ramel A, Hjaltadottir I, Launer LJ, Cotch MF, Siggeirsdottir K, Gudnason V, Sigurdsson G, Steingrimsdottir L, Halldorsson T. Characteristics of incidence hip fracture cases in older adults participating in the longitudinal Ages-Reykjavik study. Osteoporos Int. 2020;31:2501

    Eymundsdottir H, Chang M, Geirsdottir OG, Gudmundsson LS, Jonsson PV, Gudnason V, Launer L, Jonsdottir MK, Ramel A. Lifestyle and 25-hydroxy-vitamin D among community-dwelling old adults with dementia, mild cognitive impairment, or normal cognitive function. Aging Clin Exp Res. 2020;32:2649-2656.

    Chang M, Geirsdottir OG, Jonsson PV, Thorsdottir I, Ramel A. The effect of cognitive function on mobility improvement in community-living older adults: A 12-week resistance training intervention study. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2020;27:385-396.

    Baldursdottir B, Petersen H, Jonsson PV, Mogensen B, Whitney SL, Ramel A, Kristinsdóttir EK. Multi-Sensory Training and Wrist Fractures: A Randomized, Controlled Trial. Aging Clin Exp Res. 2020;32:29-40.

    Ingadottir AR, Bjorgvinsdottir EB, Beck AM, Baldwin C, Weekes CE, Geirsdottir OG, Ramel A, Birgisdottir BE, Gislason T, Gunnarsdottir I. Effect of two different nutritional supplements on postprandial glucose response and energy- and protein intake in hospitalised patients with COPD: A randomised cross-over study. Clin Nutr. 2020;39:1085-1091

    Sveinsdottir K, Ingadottir B, Elidottir AS, Geirsdottir OG, Jonsson PV, Ramel A. In vitro and in vivo effects of seaweed extract on carbohydrate digestion and availability. Int J Food Sci Nutr Res 2019, 1, 1003.

    Chang M, Geirsdottir OG, Ramel A, Sigurdarsdottir SH, Karholt I. Associations between education and need for care among community dwelling older adults in Iceland. Scand J Caring Sci. 2019 May 6. doi: 10.1111/scs.12685. [Epub ahead of print]

    Geirsdottir OG, Chang M, Jonsson PV, Thorsdottir I, Ramel A. Obesity, physical function and training success in community dwelling non-sarcopenic old adults. J Aging Res. 2019,18;2019:5340328.

    Ingadottir AR, Beck AM, Baldwin C, Weekes CE, Geirsdottir OG, Ramel A, Gislason T, Gunnarsdottir I. Oral nutrition supplements and between-meal snacks for nutrition therapy in patients with COPD identified as at nutritional risk: a randomised feasibility trial. BMJ Open Respir Res. 2019;6:e000349.

    Marzetti E, Cesari M, Calvani R, Msihid J, Tosato M, Rodriguez-Mañas L, Lattanzio F, Cherubini A, Bejuit R, Di Bari M, Maggio M, Vellas B, Dantoine T, Cruz-Jentoft AJ, Sieber CC, Freiberger E, Skalska A, Grodzicki T, Sinclair AJ, Topinkova E, Rýznarová I, Strandberg T, Schols AMWJ, Schols JMGA, Roller-Wirnsberger R, Jónsson PV, Ramel A, Del Signore S, Pahor M, Roubenoff R, Bernabei R, Landi F; SPRINTT Consortium.. Sarcopenia and Physical fRailty IN older people: multi-componenT Treatment strategies“ (SPRINTT) randomized controlled trial: case finding, screening and characteristics of eligible participants. Exp Gerontol. 2018;113:48-57.

    Ingadottir AR, Beck AM, Baldwin C, Weekes CE, Geirsdottir OG, Ramel A, Gislason T, Gunnarsdottir I. Association of energy and protein intakes with length of stay, readmission and mortality in hospitalised patients with chronic obstructive pulmonary disease. Br J Nutr. 2018;119:543-551.

    Baldursdottir B, Petersen H, Jonsson PV, Mogensen B, Whitney SL, Ramel A, Kristinsdóttir EK. Sensory impairments and wrist fractures: A case-control study. J Rehabil Med. 2018;50:209-215.

    Ingadottir AR, Beck AM, Baldwin C, Weekes CE, Geirsdottir OG, Ramel A, Gislason T, Gunnarsdottir I. Two components of the new ESPEN diagnostic criteria for malnutrition are independent predictors of lung function in hospitalized patients with chronic obstructive pulmonary disease (COPD). Clin Nutr. 2018;37:1323-1331

    Chang M, Geirsdottir OG, Briem K, Jonsson PV, Thorsdottir I, Ramel A. Hemoglobin Concentrations Predict Physical Function After A 12-Week Resistance Exercise Training and Subsequent Changes After 11 Months of Follow-Up Among Community Dwelling Older Adults. J Gerontol Geriatr Res 2018, 7:6

    Geirsdottir OG, Chang M, Jonsson PV, Thorsdottir I, Ramel A. Different measurements of body fatness and cardiovascular risk in community dwelling old adults. J Nutr Disorders Ther 2018,8:3.

    Eymundsdottir H, Chang M, Geirsdottir OG, Jonsson PV, Gudnason V, Launer L, Jonsdottir MK, Ramel A. Serum 25-hydroxy vitamin D, physical activity and cognitive function among older adults. J Aging Res Clin Practice 2018;7:143-148.

    Geirsdottir OG, Chang M, Briem K, Jonsson PV, Thorsdottir I, Ramel A. Gender, success and drop-out during a resistance exercise program in community dwelling old adults.  Journal of Aging Research. J Aging Res. 2017;2017:5841083.

    Geirsdottir OG, Ramel A, Chang M, Briem K, Jonsson PV, Thorsdottir I. Vitamin D and associations with walking ability in community dwelling old adults. J Food Nutr Disor 2016,5:2.

    Elidottir AS, Halldorsson TI, Gunnarsdottir I, Ramel A. Dietary Intake and Cardiovascular Risk Factors in Icelanders Following Voluntarily a Low Carbohydrate Diet. PLoS One. 2016;11:e0156655.

    Sveinsdottir K, Martinsdottir E, Ramel A. Blood pressure-lowering effects of long chain n-3 fatty acids from meals enriched with liquid fish oil and from microencapsulated powder. Int J Food Sci Nutr. 2016;26:1-10.

    Vidarsdottir JB, Johannsdottir SE, Thorsdottir I, Bjornsson E, Ramel A. A cross-sectional study on nutrient intake and -status in inflammatory bowel disease patients. Nutr J. 2016;15:61.

    Benediktsdottir A, Halldorsson TI, Bragadottir GJ, Gudmundsson L, Ramel A. Predictors of dropout and bariatric surgery in Icelandic morbidly obese female patients. Obes Res Clin Pract. 2016;10:63-9

    Skuladottir M, Ramel A, Rytter D, Haug LS, Sabaredzovic A, Bech BH, Henriksen TB, Olsen SF, Halldorsson TI. Examining confounding by diet in the association between perfluoroalkyl acids and serum cholesterol in pregnancy. Environ Res. 2015;143(Pt A):33-38

    Ramel A, Geirsdottir OG, Jonsson PV, Thorsdottiri I. C-Reactive Protein and Resistance Exercise in Community Dwelling Old Adults. J Nutr Health Aging. 2015;19:792-6.

    Arnarson A, Ramel A, Geirsdottir OG, Jonsson PV, Thorsdottir I. Insulin-like growth factor-1 and resistance exercise in community dwelling old adults. J Nutr Health Aging, 2015;19:856-60.

    Ingadottir AR, Hilmisdottir HB, Ramel A, Gunnarsdottir I. Energy- and protein intake of surgical patients after the implementation of energy dense hospital menus. Clinical Nutrition ESPEN 10 (2015) e107ee111.

    Geirsdottir OG, Arnarson A, Ramel A, Briem K, Jonsson PV, Thorsdottir I. Muscular strength and physical function in old adults six to 18 months after a 12-week resistance exercise program. Scandinavian Journal of Public Health 2015;43:76-8

    Hinriksdottir HH, Jonsdottir VL, Sveinsdottir K, Martinsdottir E, Ramel A. Bioavailability of long chain n-3 fatty acids from enriched meals and from microencapsulated powder. Eur J Clin Nutr. 2015;69:344-8.

    Arnarson A, Ramel A, Geirsdottir OG, Jonsson PV, Thorsdottir I. Changes in body composition and use of blood cholesterol lowering drugs predict changes in blood lipids during 12 weeks of resistance exercise training in old adults. Aging Clin Exp Res. 2014;26:287-92.

    Geirsdottir OG, Arnarson A, Ramel A, Jonsson PV, Thorsdottir I. Dietary protein intake is associated with lean body mass in community-dwelling older adults. Nutr Res. 2013;33:608-12.

    Arnarson A, Geirsdottir OG, Ramel A, Briem K, Jonsson PV, Thorsdottir I. Effects of whey proteins and carbohydrates on the efficacy of resistance training in elderly people: double blind, randomised controlled trial. European Journal of Clinical Nutrition 2013;67:821-6.

    Arnarson A, Geirsdottir OG, Ramel A, Briem K, Jonsson PV, Thorsdottir I. Response to ‘Increasing physical activity requires increasing energy intake in elderly’. Eur J Clin Nutr. 2013 Aug;67(8):895.

    Bjornsdottir R, Oskarsdottir ES, Thordardottir FR, Ramel A, Thorsdottir I, Gunnarsdottir I. Validation of a plate diagram sheet for estimation of energy and protein intake in hospitalized patients. Clin Nutr. 2013 Oct;32(5):746-51.

    Ramel A, Halldorsson TI, Tryggvadottir EA, Martinez JA, Kiely M, Bandarra NM, Thorsdottir I. Relationship between BMI and body fatness in three European countries. Eur J Clin Nutr. 2013;67:254-8.

    Thorisdottir AV, Ramel A, Palsson GI, Thorsdottir I. Prediction of infants’ iron status: diet and nutrient intake in two prospective nationwide cohorts. Eur J Nutr. 2013;52:1661-8.

    Ramel A, Arnarson A, Geirsdottir OG, Jonsson PV, Thorsdottir I. Glomerular filtration rate after a 12-week resistance exercise program with post-exercise protein ingestion in community dwelling elderly. Nutrition. 2013 May;29(5):719-23.

    Ramel A, Gudmundsdottir FD, Thorsdottir I. Effects of two different types of fast food on postprandial metabolism in normal- and overweight subjects. Eur J Clin Nutr. 2012 Nov;66):1193-8.

    Arnarson A, Geirsdóttir ÓG, Ramel A, Jónsson PV, Steingrímsdóttir L, Þórsdóttir I. Fæðuvenjur og fylgni við blóðþrýsting meðal eldri Íslendinga. Læknablaðið 2012; 10:  

    Geirsdottir OG, Arnarson A, Briem K, Ramel A, Jonsson PV, Thorsdottir I. Áhrif 12 vikna styrktarþjálfunar meðal eldri Íslendinga. Sjúkraþjálfarinn.

    Geirsdottir OG, Arnarson A, Briem K, Ramel A, Jonsson PV, Thorsdottir I. Effect of 12-Week Resistance Exercise Program on Body Composition, Muscle Strength, Physical Function, and Glucose Metabolism in Healthy, Insulin-Resistant, and Diabetic Elderly Icelanders. J Gerontol A Biol Sci Med Sci. 2012;67:1259-65

    Arnarson A, Olafsdottir A, Ramel A, Martinsdottir E, Reykdal O, Thorsdottir I. Thorkelsson G. Sensory analysis and cosumer surveys of fat- and salt reduced meat products and their use in an energy reduced diet in overweight individuals. Int J Food Sci Nutr. 2011 Dec;62:872-80. 

    Ramel A, Geirsdottir OG, Arnarson A, Thorsdottir I. Regional and total body bioelectrical impedance analysis compared to DXA in Icelandic elderly. Eur J Clin Nutr 2011;65:978-983

    Geirsdottir OG, Arnarson A, Briem K, Ramel A, Kristinn Tomasson, Thorsdottir I. Physical function predicts improvement in quality of life in elderly Icelanders after 12 weeks of resistance exercise. J Nutr Health Aging. 2012;16:62-6.

    Ramel A, Martinez JA, Kiely M, Bandarra NM, Thorsdottir I. Effects of weight loss and seafood consumption on inflammation parameters in young, overweight and obese European men and women during eight weeks of energy restriction. Eur J Clin Nutr. 2010 ;64:987-93.

    Ramel A, Arnarson A, Parra D, Kiely M, Martínez JA, Thorsdottir I. Gender Difference in the Prediction of Weight Loss by Leptin among Overweight Adults. Ann Nutr Metab 2010;56:190–197

    Ramel A, Pumberger C, Martinéz AJ, Kiely M, Bandarra NM, Thorsdottir I. Cardiovascular risk factors in young, overweight, and obese European adults and associations with physical activity and omega-3 index. Nutr Res. 2009;29:305-12.

    Ramel A, Martinez JA, Kiely M, Bandarra NM, Thorsdottir I. Moderate consumption of fatty fish reduces diastolic blood pressure in overweight and obese European young adults during energy restriction. Nutrition. 2010;26:168-74.

    Ramel A, Jonsdottir MT, Thorsdottir I. Consumption of cod and weight loss in young overweight and obese adults on an energy reduced diet for 8-weeks. Nutr Metab Cardiovasc Dis. 2009 Dec;19):690-6.

    Ramel A, Parra D, Martinéz JA, Kiely M, Thorsdottir I. Effects of seafood consumption and weight loss on fasting leptin and ghrelin concentrations in overweight and obese European young adults. Eur J Nutr. 2009,48:107-14.

    Ramel A, Jonsson PV, Bjornsson S, Thorsdottir I. Vitamin D deficiency and nutritional status in elderly hospitalized subjects in Iceland. Public Health Nutr. 2009,12(7):1001-5.

    Ramel A, Jonsson PV, Bjornsson S, Thorsdottir I. Anemia, nutritional status, and inflammation in hospitalized elderly. Nutrition. 2008;24:1116-22.

    Parra D, Ramel A, Bandarra N, Kiely M, Martínez JA, Thorsdottir I. A diet rich in long chain omega-3 fatty acids modulates satiety in overweight and obese volunteers during weight loss. Appetite. 2008;51(3):676-80.

    Ramel A, Martinéz A, Kiely M, Morais G, Bandarra NM, Thorsdottir I. Beneficial effects of long-chain n-3 fatty acids included in an energy-restricted diet on insulin resistance in overweight and obese European young adults. Diabetologia. 2008;51:1261-8.

    Ramel A, Jonsson PV, Bjornsson S, Thorsdottir I. Total Plasma Homocysteine in Hospitalized Elderly: Associations with Vitamin Status and Renal Function. Ann Nutr Metab. 2007;51(6):527-532

    Ramel A, Jonsson PV, Bjornsson S, Thorsdottir I. Differences in the glomerular filtration rate calculated by two creatinine based and three cystatin C based formulae in hoplitalized elderly patients. Nephron Clinical Practice 2007;108:c16–c22.

    Hjaltadóttir I, Ásgeirsdóttir AE, Árnadóttir B, Ottósdóttir H, Hermannsdóttir GJ, Ramel A, Thorsdóttir I. Assessment tool for malnutrition in elderly people. The Icelandic Journal of Nursing 2007;83(5):48-56.

    Sveinsdottir H, Biering P, Ramel A. Occupational stress, job satisfaction, and working environment among Icelandic nurses: A cross-sectional questionnaire survey. Int J Nurs Stud. 2006;43(7):875-89.

    Thome M, Alder EM, Ramel A. A population-based study of exclusive breastfeeding in Icelandic women: is there a relationship with depressive symptoms and parenting stress? Int J Nurs Stud. 2006;43(1):11-20.

    Skuladottir A, Thome M, Ramel A. Improving day and night sleep problems in infants by changing day time sleep rhythm: a single group before and after study. Int J Nurs Stud. 2005;42(8):843-50.

    Thorsdottir I, Jonsson PV, Asgeirsdottir AE, Hjaltadottir I, Bjornsson S, Ramel A. Fast and simple screening for nutritional status in hospitalized, elderly people. J Hum Nutr Diet. 2005;18(1):53-60.

    Ramel A, Wagner KH, Elmadfa I. Correlations between plasma noradrenaline concentrations, antioxidants, and neutrophil counts after submaximal resistance exercise in men. Br J Sports Med. 2004;38(5):E22.

    Thorsdottir I, Hill J, Ramel A. Seasonal variation in cis-9, trans-11 conjugated linoleic acid content in milk fat from Nordic countries. J Dairy Sci. 2004;87(9):2800-2.

    Thorsdottir I, Hill J, Ramel A. Omega-3 fatty acid supply from milk associates with lower type 2 diabetes in men and coronary heart disease in women. Prev Med. 2004;39(3):630-4.

    Ramel A, Wagner KH, Elmadfa I. Plasma antioxidants and lipid oxidation after submaximal resistance exercise in men. Eur J Nutr. 2004;43(1):2-6.

    Ramel A, Wagner KH, Elmadfa I. Acute impact of submaximal resistance exercise on immunological and hormonal parameters in young men. J Sports Sci. 2003;21(12):1001-8.

    Iggman D, Thorsdottir I, Ramel A, Birgisdottir B. Differences in milk composition between Iceland and the other 4 Nordic countries. Scandinavian Journal of Nutrition 2003, 47, 194-199.

    Thorsdottir I, Ramel A. Dietary intake of 10- to 16-year-old children and adolescents in central and northern Europe and association with the incidence of type 1 diabetes. Ann Nutr Metab. 2003;47(6):267-75.

    Branches

    Undeland I, Lindquist H, Yun YC, Falch E, Ramel A, Cooper M et al. Seafood and Health: What is the full story?, Marine Functional Food. Ed JB Luten Wageningen Academic Publishers, The Netherlands, 2009.

    Thorsdottir I, Ramel A. Fish consumption and the health of children and young adults. Improving seafood products for the consumer. Ed Torger Borresen. 2008. Woodhead Publishing Limited, Cambridge, England

    Ramel A, Stenholm S. Obesity and health in older adults, Interdisciplinary Nutritional Management and Care for Older Adults  – An Evidence-Based Practical Guide for Nurses. Eds: Geirsdóttir OG, Bell JJ. Springer, 2021

    Ramel A, Aðalbjörnsson BV. Food-drug interaction in older adults, Interdisciplinary Nutritional Management and Care for Older Adults  – An Evidence-Based Practical Guide for Nurses. Eds: Geirsdóttir OG, Bell JJ. Springer, 2021