Manuela Dittmar

Datos Biográficos

ID169374
NOMBREManuela Dittmar
NOMBRESManuela
APELLIDODittmar
FIRMADITTMAR M
AFILIACIONESJohannes Gutenberg University Mainz
ORCID0000-0003-3862-7354
VERIFICADOSí
TOTAL DE OBRAS39
TOTAL DE CITAS13
TOTAL COMO AUTOR39
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN1996
AÑO MÁS RECIENTE DE PUBLICACIÓN2014
ÍNDICE H1

  • Human biological research since 2006 at the Christian-Albrechts-University in Kiel - Aging, chronobiology, and high altitude adaptation

    Manuela DittmarARTICLEAnthropologischer Anzeiger2014

    This article reviews the research at the Department of Human Biology at the Christian-Albrechts-University in Kiel since 2006. The research focuses on the investigation of recent human populations with respect to aging, chronobiology, and adaptation to high altitude. The research areas are outlined presenting findings, ongoing projects and future directions. Aging research examines biological changes in humans considering that aging is a multidim…

  • Schleswig

    Jesper L Boldsen, Kaare Lund Rasmussen et al.ARTICLEAnthropologischer Anzeiger2013Citada por: 1

    Leprosy was a well-recognized and dreaded disease in medieval Europe. The disease is reported to have reached Germany with the Roman invasion and it was present in Scandinavia in the first centuries AD. This paper estimates and analyzes the frequency of leprosy among adult people buried in one of five medieval cemeteries in the city of Schleswig. Seven different dichotomous osteological lesions indicative of leprosy were analyzed, and it was poss…

  • Comparison of three segmental multifrequency bioelectrical impedance techniques in healthy adults

    Open AccessKatharina Mally, Manuela DittmarARTICLEAnnals of Human Biology2012

    Differences exist between the three techniques which are primarily caused by inconsistent current pathways. A comparison with literature data showed that, in addition, subject's posture during measurement, electrode contact and electrode site may lead to inconsistent resistance and reactance values. This makes comparisons between different populations difficult. Therefore, this study recommends generally using the T2 technique which is standardiz…

  • Native highland and lowland populations differ in .Gamma.-globin gene promoter polymorphisms related to altered fetal hemoglobin levels and delayed fetal to adult globin switch after birth

    Open AccessINKEN ROTTGARDT, Francisco Rothhammer et al.ARTICLEAnthropological Science2010

    Lowered partial oxygen pressure at high altitude exerts a strong selection pressure. Since hypoxia is most serious for the fetus, fetal hemoglobin genes (HBG1, HBG2) are candidates for genetic adaptation to high altitude. The aim of this study was to compare promoter polymorphisms of these genes for differences between highland and lowland populations. In 50 native highlanders of the Chilean Andes and 50 lowlanders of European ancestry, the promo…

  • Prevalence of Sarcopenia among Older Community-Dwelling People with Normal Health and Nutritional State

    Kerstin Khalaj Hedayati, Manuela DittmarARTICLEEcology of Food and Nutrition2010

    This study analyzed whether sarcopenia, a risk factor for disability in the aged, also occurs in healthy community-dwelling elders with normal nutritional state. As indicators, body cell mass (BCM) and lean body mass (LBM) were determined in 110 Germans (ages 60-83) using bioimpedance analysis. Nutritional status, muscle function, anthropometry, and physical activity level were investigated. Sarcopenia was already present in well nourished health…

  • Role of Oxidative DNA Damage and Antioxidative Enzymatic Defence Systems in Human Aging~!2008-08-08~!2008-10-29~!2008-12-05

    Open AccessManuela Dittmar, Melanie Knuth et al.ARTICLEThe Open Anthropology Journal2008

    Oxidative stress is regarded as a main causal factor for natural aging. This study tested the hypothesis that healthy elderly people show higher oxidative DNA damage levels and lower antioxidative enzymatic defense capacities than younger ones. In a cross-sectional study, blood samples of 20 older (62-79 years) and 20 younger adults (24-28 years) were compared with respect to oxidative DNA damage in lymphocytes (alkaline elution), oxidative statu…

  • Referate

    Uwe Hoßfeld, Hans-Georg Scheil et al.ARTICLEAnthropologischer Anzeiger2007

  • Referate

    Manuela Dittmar, Winfried Henke et al.ARTICLEAnthropologischer Anzeiger2005

  • Referate

    Hubert Walter, Hans-Georg Scheil et al.ARTICLEAnthropologischer Anzeiger2005

  • Comparison of bipolar and tetrapolar impedance techniques for assessing fat mass

    Open AccessManuela DittmarARTICLEAmerican Journal of Human Biology2004

    Whole body fat mass (BF) can be predicted by different bioimpedance (BIA) techniques measuring the whole body (tetrapolar hand‐to‐foot technique, HF), lower body (bipolar foot‐to‐foot technique, FF), or upper body (bipolar hand‐to‐hand technique, HH). This study analyzed 146 healthy volunteers (age 18–84 years) for whether these three techniques differ in their estimates of BF, and whether sex and age of the subjects influence estimates of BF. Re…

  • Validation of different bioimpedance analyzers for predicting cell mass against whole‐body counting of potassium ( 40 K) as a reference method

    Open AccessManuela Dittmar, Helmut ReberARTICLEAmerican Journal of Human Biology2004

    This study compared two different tetrapolar bioimpedance (BIA) devices for estimating body cell mass (BCM), validated them against whole‐body counting of 40 K (TBK method), and developed improved prediction equations for estimating BCM from BIA. In 50 healthy volunteers (age 23–65 years, BMI 18.6–27.7 kg/m 2 ), BCM was estimated with the BIA devices Nutriguard‐M (Data Input, Germany) and Soft‐Tissue‐Analyzer‐STA (Akern, Italy) and by the TBK met…

  • Contribution of genetic and environmental factors to variation in body compartments - a twin study in adults

    Dorin Hanisch, Manuela Dittmar et al.ARTICLEAnthropologischer Anzeiger2004

    This study aimed at analyzing the contribution of genetic and environmental factors on phenotypic variation of various traits of body composition. Subjects were 30 same-sexed pairs of twins including 20 monozygous (MZ) and 10 dizygous (DZ) pairs, aged 19-62 years. Zygosity was determined by DNA typing and morphological diagnosis. Body composition parameters (fat mass FM, lean body mass LBM, body cell mass BCM, extracellular mass ECM, total body w…

  • Referate

    Manuela Dittmar, Uwe Hoßfeld et al.ARTICLEAnthropologischer Anzeiger2004

  • Reliability and variability of bioimpedance measures in normal adults

    Open AccessManuela DittmarARTICLEAmerican Journal of Physical…2003Citada por: 11Referencias: 24

    This study aimed to analyze the reliability and evaluate the causes of variability of bioimpedance parameters. Direct measures were analyzed because they are not affected by inappropriate prediction models. Resistance (R), reactance (Xc), and phase angle (PA) were determined at three fixed frequencies (5, 50, and 100 kHz) in 653 normal Germans (244 males and 409 females), aged 20–90 years, using a phase‐sensitive whole‐body tetrapolar bioimpedanc…

  • Referate

    Manuela Dittmar, Carsten Niemitz et al.ARTICLEAnthropologischer Anzeiger2003

  • Effect of diurnal variation on body composition under consideration of selected chronobiological marker systems

    Open AccessManuela Dittmar, Christoph Raschka et al.ARTICLEAnthropological Review2002Referencias: 15

    Diurnal variation in body composition in relation to chronobiological parameters was analyzed in 27 healthy students (22-29 years) four times over one day from 5:35 to 0:15 h. Body composition was determined by multifrequency bioimpedance analysis at fixed frequencies (1, 5, 50, 100 kHz). Resistance (R) and reactance (Xc) were measured. Total, extra and intracellular body water (TBW, ECW, ICW), lean body mass (LBM), and fat mass (FM) were derived…

  • Functional and Postural Lateral Preferences in Humans

    Manuela DittmarARTICLEHuman Biology2002Citada por: 1Referencias: 1

    This study aimed to provide data on lateral preferences among older subjects, to analyze age differences, and to determine interrelations between lateral preferences. Four functional preferences (handedness, footedness, eyedness, earedness) and three postural lateral preferences (hand-clasping, arm-folding, leg-crossing) were assessed in 628 Germans (252 men, 376 women) aged between 19 and 90 years. Sex differences, age differences, and associati…

  • Berichte

    Gisela Grupe, Holle Greil et al.ARTICLEAnthropologischer Anzeiger2002

  • Berichte

    Ritz-Timme, S Ritz-Timme et al.ARTICLEAnthropologischer Anzeiger2002

  • Referate

    W Henke, H Schutkowski et al.ARTICLEAnthropologischer Anzeiger2002

  • Age-related decline in body cell mass in elderly men and women, determined by a noninvasive nuclear technique

    Open AccessManuela Dittmar, Helmut Reber et al.ARTICLEAmerican Journal of Human Biology2001

    The body cell mass (BCM) represents the actively metabolizing cellular components of the human body. In this study, the hypothesis was tested that physical activity and a sufficient dietary intake of potassium attenuate the age-related decline in BCM in the elderly. Cross-sectional data were collected in 82 male and 79 female non-institutionalized elderly (60-90 years) from Mainz, Germany, and were analyzed by age groups. BCM was calculated from …

  • Age‐related decline in body cell mass in elderly men and women, determined by a noninvasive nuclear technique

    Open AccessManuela Dittmar, Helmut Reber et al.ARTICLEAmerican Journal of Human Biology2001

    The body cell mass (BCM) represents the actively metabolizing cellular components of the human body. In this study, the hypothesis was tested that physical activity and a sufficient dietary intake of potassium attenuate the age-related decline in BCM in the elderly. Cross-sectional data were collected in 82 male and 79 female non-institutionalized elderly (60–90 years) from Mainz, Germany, and were analyzed by age groups. BCM was calculated from …

  • Comparison of soft tissue body composition in postmenopausal women with or without hormone replacement therapy considering the influence of reproductive history and lifestyle

    Open AccessManuela DittmarARTICLEAnnals of Human Biology2001

    OBJECTIVES: To examine long-term effects of at least 5 years' conventional hormone replacement therapy (HRT), reproductive history and lifestyle on fat mass and muscle mass in postmenopausal women. RESEARCH DESIGN AND METHODS: A cross-sectional retrospective approach was used, including 64 healthy women (56-69 years, mean age 63.4 years). Hormone users were compared with age-matched non-users with respect to (a) type of HRT used (oestrogen vs oes…

  • Referate

    Uwe Hoßfeld, Manuela Dittmar et al.ARTICLEAnthropologischer Anzeiger2001

  • Berichte

    Manuela Dittmar, Ursula Wittwer-Backofen et al.ARTICLEAnthropologischer Anzeiger2000