Publications by authors named "Bongartz M"

Background: Geriatric rehabilitation aims at increasing physical and social activity and maintaining the functional reserve of older people. However, the continuity of geriatric rehabilitation in the outpatient setting is limited due to a lack of structured aftercare programs. In order to overcome this, a three-month multimodal home-based intervention program (GeRas) was implemented.

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Background: Structured aftercare programs are implemented to facilitate the transition from rehabilitation centers to patients' home environments. Taking the program GeRas as an example, this paper aims to evaluate the influence of patient-related factors on the implementation of the geriatric aftercare program GeRas from patients' and providers' perspectives.

Methods: To capture patients' and providers' perspectives, qualitative interviews were conducted using a semi-structured interview guide.

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Background: Geriatric rehabilitation aims to maintain the functional reserves of older adults in order to optimize social participation and prevent disability. After discharge from inpatient geriatric rehabilitation, patients are at high risk for decreased physical capacity, increased vulnerability, and limitations in mobility. As a result, ageing in place becomes uncertain for a plethora of patients after discharge from geriatric rehabilitation and effective strategies to prevent physical decline are required.

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Background: Weak lower body strength and balance impairments are fundamental risk factors for mobility impairments and falls that can be improved by physical activity (PA). Previous meta-analyses have focused on these risk factors in adults aged ≥ 65 years. Yet, the potential of PA for improving these risk factors in middle-aged populations has not been systematically investigated.

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Background: Older people with cognitive impairment (CI) are at high risk for mobility limitations and adverse outcomes after discharge from geriatric rehabilitation settings. The aim was to estimate the effects of a specifically designed home-based physical training and activity promotion program on physical capacity, different aspects of physical activity (PA), and psychosocial status.

Methods: Patients with mild to moderate CI (Mini-Mental State Examination [MMSE]: 17-26 points) discharged home after rehabilitation were included in this randomized, double-blind, placebo-controlled trial with a 12-week intervention and 12-week follow-up period.

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Introduction: There is a substantial lack of home-based exercise programs in the highly vulnerable group of geriatric patients with cognitive impairment (CI) after discharge from ward rehabilitation. Beyond clinical effectiveness, the cost-effectiveness of intervention programs to enhance physical performance is not well investigated in this target group.

Objective: The aim of the study was to determine the cost-effectiveness of a 12-week home-based exercise intervention following discharge from ward rehabilitation compared to unspecified flexibility training for geriatric patients with CI from a societal perspective.

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This study aimed to identify determinants of quantitative dimensions of physical activity (PA; duration, frequency, and intensity) in community-dwelling, multi-morbid, older persons with cognitive impairment (CI). In addition, qualitative and quantitative aspects of habitual PA have been described. Quantitative PA and qualitative gait characteristics while walking straight and while walking turns were documented by a validated, sensor-based activity monitor.

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Background: Community-dwelling older persons with cognitive impairment (CI) following discharge from geriatric rehabilitation are at high risk of losing life-space mobility (LSM). Interventions to improve their LSM are, however, still lacking. The aim of this study was to evaluate the effects of a CI-specific, home-based physical training and activity promotion program on LSM.

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The aim of the present study was to examine adherence and acceptance of a home-based program to promote physical activity (PA) in older persons with cognitive impairment (CI) following inpatient rehabilitation. Sixty-three older persons (≥ 65 years) with mild to moderate CI (Mini-Mental State Examination score 17-26), allocated to the intervention group of a randomized, controlled intervention trial underwent a 12-week home-based PA intervention including (1) physical training and outdoor walking to improve functional fitness and (2) motivational strategies (goal-setting, pedometer-based self-monitoring, social support delivered by home visits, phone calls) to promote PA. Training logs were used to assess adherence to physical training, outdoor walking and to motivational strategies (goal-setting, pedometer-based self-monitoring).

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Objective: The aim of the study was to investigate the psychometric quality of a newly developed activity monitor (uSense) to document established physical activity parameters as well as innovative qualitative and quantitative gait characteristics in geriatric patients.

Approach: Construct and concurrent validity, test-retest reliability, and feasibility of established as well as innovative characteristics for qualitative gait analysis were analyzed in multi-morbid, geriatric patients with cognitive impairment (CI) (n  =  110), recently discharged from geriatric rehabilitation.

Main Results: Spearman correlations of established and innovative uSense parameters reflecting active behavior with clinically relevant construct parameters were on average moderate to high for motor performance and life-space and low to moderate for other parameters, while correlations with uSense parameters reflecting inactive behavior were predominantly low.

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Objectives: To describe life-space mobility and identify its determinants in older persons with cognitive impairment after discharge from geriatric rehabilitation.

Methods: A cross-sectional study in older community-dwelling persons with mild to moderate cognitive impairment (Mini-Mental State Examination, MMSE: 17-26) following geriatric rehabilitation was conducted. Life-space mobility (LSM) was evaluated by the Life-Space Assessment in Persons with Cognitive Impairment (LSA-CI).

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Background: A version of the Life-Space Assessment in persons with cognitive impairment (LSA-CI) has recently been developed.

Aims: To establish a cut-off value for the newly developed Life-Space Assessment in persons with cognitive impairment (LSA-CI).

Methods: In a cross-sectional study including 118 multimorbid, older persons with cognitive impairment, life-space mobility (LSM) was documented by the LSA-CI.

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Background And Objectives: To investigate the validity, reliability, sensitivity to change, and feasibility of a modified University of Alabama at Birmingham Study of Aging Life-Space Assessment (UAB-LSA) in older persons with cognitive impairment (CI).

Research Design And Methods: The UAB-LSA was modified for use in persons with CI Life-Space Assessment for Persons with Cognitive Impairment (LSA-CI). Measurement properties of the LSA-CI were investigated using data of 118 multimorbid older participants with CI [mean age (SD): 82.

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Background: Geriatric patients with cognitive impairment (CI) show an increased risk for a negative rehabilitation outcome and reduced functional recovery following inpatient rehabilitation. Despite this obvious demand, evidence-based training programs at the transition from rehabilitation to the home environments are lacking. The aim of this study is to evaluate the efficacy of a feasible and cost-effective home-based training program to improve motor performance and to promote physical activity, specifically-tailored for post-ward geriatric patients with CI.

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Oxidative stress is thought to be an important factor in the onset, progression and recurrence of cancer. In order to investigate how it is influenced by physical activity, we measured oxidative stress and antioxidative capacity (aoC) in 12 women with breast cancer and 6 men with prostate cancer, before and after long hiking trips. Before the hike, the men had a ROS-concentration of 1.

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Background: Delivering palliative care to elderly, dying patients is a present and future challenge. In Germany, this has been underlined by a 2009 legislation implementing palliative care as compulsory in the medical curriculum. While the number of elderly patients is increasing in many western countries multimorbidity, dementia and frailty complicate care.

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Objective: Hyperglycaemia impairs wound healing. However, little is known about the underlying cellular mechanisms that lead to diminished wound repair in insulin-controlled and non-insulin-controlled diabetes. This study investigated the role of endogenous and exogenous nitric oxide on incisional wound healing in diabetic rats.

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Background: MHC-class-II-deficient mice lack T helper cell dependent immune reactions. T cell related immune functions are critical for normal wound healing. We hypothesized that MHC-II-deficiency compromises wound repair by affecting the normal wound immune response.

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Macrophage-derived nitric oxide is a critical mediator in wound healing. Its regulation in vivo, however, remains unclear. We hypothesized that interferon (IFN)-gamma plays an important role in the regulation of nitric oxide in wounds.

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Available evidence suggests that immune cells from neonates born to mothers with placental Plasmodium falciparum (Pf) infection are sensitized to parasite Ag in utero but have reduced ability to generate protective Th1 responses. In this study, we detected Pf Ag-specific IFN-gamma(+) T cells in cord blood from human neonates whose mothers had received treatment for malaria or who had active placental Pf infection at delivery, with responses being significantly reduced in the latter group. Active placental malaria at delivery was also associated with reduced expression of monocyte MHC class I and II in vivo and following short term in vitro coculture with Pf Ag compared with levels seen in neonates whose mothers had received treatment during pregnancy.

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We analyzed a single nucleotide polymorphism (SNP) at position -56 (T-->C) in the promoter region of the gene encoding the human interferon-gamma receptor ligand-binding chain I (IFN-gammaR1). The mutation was present at similar frequencies in Gabonese children with either mild or severe malaria. Functional investigations of the promoter in a transfected human B-cell line showed lower levels of luciferase reporter gene expression in the presence of the mutation, indicating the importance of this position for promoter activity, and suggesting that this SNP might negatively influence the expression level of IFN-gammaR1 at the cell surface.

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We assessed the cellular immunological responses to two Plasmodium falciparum liver-stage antigen (LSA)-1-derived T-cell epitopes in healthy Gabonese children and adults. The N-terminal peptide, designated T1, induced interferon (IFN)-gamma production in peripheral blood mononuclear cells (PBMC) from a significantly lower proportion of children compared to adults, but both interleukin (IL)-10 and IL-12 were produced by similar proportions of PBMC from the two groups. The LSA-1 junction region peptide (LSA-J) also induced IFN-gamma in a lower, but in this case statistically non-significant, proportion of PBMC from children compared to adults, whilst the proportions producing either IL-10 or IL-12 were again similar.

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Background: Radiation impairs healing, although the underlying mechanisms are not clearly defined. Normal healing requires a fine balance of promoting and inhibiting factors. We hypothesize that there may be a down-regulation of promoting factors (nitric oxide) and, in turn, an up-regulation of healing inhibiting factors (TNF-alpha and IFN-gamma) in the wound after radiation.

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Liver-stage antigen (LSA)-1 is a candidate vaccine molecule for Plasmodium falciparum malaria, but knowledge of the evolution of naturally acquired immune responses to LSA-1 in African children is lacking. We therefore assessed cellular immune responses to two defined T cell epitopes of LSA-1, during and after uncomplicated P. falciparum malaria in a group of Gabonese children.

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Background: The effect of the immunosuppressant tacrolimus on wound healing is not known. Tacrolimus has been shown to decrease nitric oxide synthesis. The systemic inhibition of wound nitric oxide synthesis leads to impaired healing.

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