Publications by authors named "Jos Tournoy"

Objectives: Adequate protein intake and protein supplementation has a beneficial role in the prevention and treatment of sarcopenia. The achievement and quantification of the recommended total protein intake by sarcopenic older adults receiving protein supplementation has not been studied. The aim of this study was to compare the accuracy of protein intake estimated from a combination of four-day food diaries and weighed protein powders against total protein intake estimated from 24-h urine samples.

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Spatial neglect is a post-stroke attention deficit for which there is no evidence-based intervention. Immersive virtual reality (IVR) may increase treatment efficacy, as it allows to train spatial attention in a rich environment. This study evaluated the efficacy and feasibility of an IVR patient-tailored training (HEMIRehApp).

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Introduction: Gastrointestinal (GI) changes may alter drug absorption, potentially impacting both efficacy and safety of oral pharmacotherapy. However, the GI physiology is rarely studied in the aging population. This study aimed to explore GI transit time and pH in geriatric inpatients and older adults, and compare these findings with those from young volunteers.

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  • Accurate assessment of physical activity in hospitalized geriatric rehabilitation patients can be challenging due to slow walking speeds and reliance on walking aids; this study aimed to validate the MOX activity monitor's effectiveness in identifying different activity levels such as sedentary, standing, and dynamic movements.
  • The study involved 20 participants over the age of 70 who used walking aids; the MOX monitor was tested for one week, and activities were filmed to evaluate its classification accuracy, with results showing minimal error rates across all activities.
  • The findings concluded that the MOX activity monitor is not only highly accurate but also easy to use, indicating its potential as a practical tool for assessing physical activity in this specific patient population.
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Objectives: Chronic antipsychotic use among nursing home (NH) residents carries risks with uncertain benefits. Despite guidelines recommending restricted use, these agents remain widely prescribed. This study investigates chronic antipsychotic use in Belgian NHs.

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Introduction: Older adults face a higher risk of vancomycin-related toxicity given their (patho)-physiological changes, making early management of supratherapeutic exposure crucial. Yet, data on vancomycin exposure in older adults is scarce. This study aims to compare vancomycin concentrations between older and younger patients, emphasizing supratherapeutic concentrations and the effect of patient characteristics.

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  • A study was done to see if a new method to predict brain age can help understand brain health better and measure how lifestyle changes might help keep our brains in good condition.
  • They looked at data from 742 people, including those with healthy brains and various types of cognitive issues, using special software to analyze brain scans.
  • The results showed that people with mild cognitive impairment and Alzheimer's had older brain ages than their actual ages, and using brain age was better at identifying brain problems than just looking at regular age.
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Empirical evidence for a low normal or reference interval for serum prolactin (PRL) is lacking for men, while the implications of very low PRL levels for human health have never been studied. A clinical state of "PRL deficiency" has not been defined except in relation to lactation. Using data from the European Male Ageing Study (EMAS), we analyzed the distribution of PRL in 3,369 community-dwelling European men, aged 40-80 years at phase-1 and free from acute illnesses.

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Sarcopenia has been associated with adverse health outcomes, including cognitive dysfunction. However, its specific interrelationship with neurocognitive disorders such as mild cognitive impairment (MCI), Alzheimer's disease (AD) or other types of dementia has not been thoroughly explored. This meta-analysis aims to summarize the existing evidence on this interrelationship.

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Background: Polypharmacy is a growing concern, impacting patient safety and healthcare costs. Monitoring its prevalence and temporal trends is essential for effective healthcare management.

Aim: This study aimed to determine prevalence and trends of polypharmacy and excessive polypharmacy in Belgium.

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Insulin-like peptide 3 (INSL3) is a circulating biomarker for Leydig cell functional capacity in men, also indicating Leydig Cell Insufficiency (LCI) and potential primary hypogonadism. Using results from large cohort studies we explore sources of biological and technical variance, and establish a reference range for adult men. It is constitutively secreted with little within-individual variation and reflects testicular capacity to produce testosterone.

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Background: Atrial fibrillation occurs in nearly half of geriatric inpatients and is a major cause of morbidity and mortality. Suboptimal anticoagulation use is an important concern in this population. This study aimed to evaluate the appropriateness of antithrombotic therapies in this patient cohort.

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Special populations, like geriatric patients, experience altered paracetamol pharmacokinetics (PK), complicating pain management. More PK research is essential to optimize paracetamol (acetaminophen) dosing. Yet, the reference method ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) is not readily available.

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Background: Previous studies have suggested an association between sleep disturbance and frailty. The mechanism is unknown, although it has been suggested that hormonal factors may play a role.

Methods: The aim was to determine the association between sleep duration, sleep quality and frailty, and to determine whether testosterone influenced this association.

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Inappropriate polypharmacy is highly prevalent among older adults and presents a significant healthcare concern. Conducting medication reviews and implementing deprescribing strategies in multimorbid older adults with polypharmacy are an inherently complex and challenging task. Recognizing this, the Special Interest Group on Pharmacology of the European Geriatric Medicine Society has compiled evidence on medication review and deprescribing in older adults and has formulated recommendations to enhance appropriate prescribing practices.

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Background: Gut microbiota (GM) might play a role in muscle metabolism and physiological processes through a hypothesized gut-muscle axis, influencing muscle mass and function and thus, sarcopenia. The Trial in Elderly with Musculoskeletal Problems due to Underlying Sarcopenia-Faeces to Unravel the Gut and Inflammation Translationally (TEMPUS-FUGIT) aims to explore the gut-muscle axis in sarcopenia.

Methods: First, in a cross-sectional case-control phase, 100 community-dwelling adults without sarcopenia will be compared to 100 community-dwelling adults (≥ 65 years) with sarcopenia of similar age-, gender and BMI-ratio, participating in the ongoing 'Exercise and Nutrition for Healthy AgeiNg' (ENHANce; NCT03649698) study.

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Design: The androgen receptor (AR) mediates peripheral effects of testosterone. Previous data suggests an association between the number of CAG repeats in exon-1 of the AR gene and AR transcriptional activity. The aim of this analysis was to determine the association between the number of AR CAG repeats and all-cause mortality in men and the influence of testosterone level on the association.

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Context: The assessment of decision-making ability of older adults with cognitive impairment is a complex challenge that geriatricians often face in relation to risk-taking situations (driving, aging in place, financial decisions, etc.). However, there are no clear and consensual practice guidelines.

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Study Objectives: Sleep disturbances are common in people with Alzheimer's disease (AD), and a reduction in slow-wave activity is the most striking underlying change. Acoustic stimulation has emerged as a promising approach to enhance slow-wave activity in healthy adults and people with amnestic mild cognitive impairment. In this phase 1 study we investigated, for the first time, the feasibility of acoustic stimulation in AD and piloted the effect on slow-wave sleep (SWS).

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Background: Polypharmacy and inappropriate medication use are associated with unplanned hospital admissions. Targeted interventions might reduce the hospitalization risk. Yet, it remains unclear which patient profiles derive the largest benefit from such interventions.

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Objectives: During hospitalisation, physical inactivity is common among older patients and is associated with adverse outcomes, e.g. functional decline.

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Heart failure is a prevalent syndrome among older adults, with a major impact on morbidity and mortality. Higher age is correlated with underuse of guideline-directed medical therapies which, in turn, has been linked to worse clinical outcomes. Importantly, most evidence so far has been collected in adults who were younger, less multi-morbid and polymedicated compared with those who are commonly treated in daily clinical practice.

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Background: Chronic use of hypnotic agents is prevalent in older adults, who as a result are at increased risk for certain adverse events, such as day-time drowsiness and falls. Multiple strategies to discontinue hypnotics have been tested in geriatric patients, but evidence remains scarce. Hence, we aimed to investigate a multicomponent intervention to reduce hypnotic drug use in geriatric inpatients.

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The older population consisting of persons aged 65 years or older is the fastest-growing population group and also the major consumer of pharmaceutical products. Due to the heterogenous ageing process, this age group shows high interindividual variability in the dose-exposure-response relationship and, thus, a prediction of drug safety and efficacy is challenging. Although physiologically based pharmacokinetic (PBPK) modelling is a well-established tool to inform and confirm drug dosing strategies during drug development for special population groups, age-related changes in absorption are poorly accounted for in current PBPK models.

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Aims: To explore the relationship between inflammatory markers and sarcopenia-related traits in sarcopenic older adults.

Methods: Baseline data of the ongoing Exercise and Nutrition for Healthy AgeiNg (ENHANce) study were used for a secondary, exploratory, cross-sectional analysis. ENHANce is a 5-armed triple blinded randomized controlled trial, in older adults (>65y) with sarcopenia defined according to the revised criteria of the European Working Group of Sarcopenia in Older People (EWGSOP2) aiming to assess the effect of combined anabolic interventions (protein supplement, omega-3 supplement and physical exercise) on physical performance, compared to single/placebo interventions.

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