Search results for "PERFORMANCE"

2013

Purpose This study assessed, for the first time, prevalence estimates for physical and cognitive doping within a single collective of athletes using the randomized response technique (RRT). Furthermore, associations between the use of legal and freely available substances to improve physical and cognitive performance (enhancement) and illicit or banned substances to improve physical and cognitive performance (doping) were examined. Methods An anonymous questionnaire using the unrelated question RRT was used to survey 2,997 recreational triathletes in three sports events (Frankfurt, Regensburg, and Wiesbaden) in Germany. Prior to the survey, statistical power analyses were performed to deter…

The cardinal exercise stopper: Muscle fatigue, muscle pain or perception of effort?

2018

The capacity to sustain high-intensity aerobic exercise is essential for endurance performance. Therefore, it is important to understand what is the factor limiting time to exhaustion (TTE) in healthy and fit adults. In Study 1, maximal voluntary cycling power (MVCP) was measured in 11 volunteers before and immediately after a high-intensity TTE test on cycle ergometer. Cadence was 60 rpm in both the MVCP and TTE tests. Despite a 35% loss in MVCP, power produced during the final MVCP test (mean ± SD 469 ± 111 W) was significantly higher than the power required by the TTE test (269 ± 55 W) (P < 0.001). In Study 2, 12 participants performed a cold pressor test (CPT) to the limit of tolerance …

Smokeless tobacco, sport and the heart

2014

SummarySmokeless tobacco (snuff) is a finely ground or shredded tobacco that is sniffed through the nose or placed between the cheek and gum. Chewing tobacco is used by putting a wad of tobacco inside the cheek. Smokeless tobacco is widely used by young athletes to enhance performance because nicotine improves some aspects of physiology. However, smokeless tobacco has harmful health effects, including cardiovascular disorders, linked to nicotine physiological effects, mainly through catecholamine release. Nicotine decreases heart rate variability and the ventricular fibrillation threshold, and promotes the occurrence of various arrhythmias; it also impairs endothelial-dependent vasodilation…

Discrepancy between food offered and consumed during hospitalization in older adult patients

2020

AbstractMalnutrition is one of the most frequent geriatric syndromes and a key contributor to frailty. Ageing is commonly associated with modifications in eating habits with changes in appetite and food intake. Malnutrition is not only a sign of illness, but its presence increases morbidity, hospital stay, institutionalization, poor quality of life, in-hospital complications, expenses, and mortality. Hospitalized patients have increased calorie requirements to overcome the increased energy expenditure due to acute disease. We aimed to evaluate the actual consumption of the food offered to a sample of hospitalized older adults. Sixty hospitalized patients (women/men = 23/37) were recruited s…

Stability of Ascorbic Acid in Several Blood Collecting Procedures

2003

Purpose: There is good evidence that ascorbic acid (AA) status influences the onset of post-operative complications in intensive care patients. Light and room temperature cause the spontaneous oxidation of AA. Therefore, the stability of AA during modified sample preparation was investigated. Design: Prospective, single centre study. Methods: The AA plasma concentration was analysed in arterial and venous blood with added ethylene-diamine-tetra-acetic acid (EDTA) from 165 subjects. In addition, EDTA or heparin was added as an anticoagulant in venous blood of 79 subjects. Analyses were carried out using high performance liquid chromatography with ultraviolet detection. Results: In samples of…

Low Serum Choline Concentrations Are Associated with Worse Cognitive Performance in Subjects with Metabolic Syndrome

2020

OBJECTIVES: Choline is an essential nutrient critical for components of the cell membrane, such as choline-containing phospholipids (phosphatidylcholine and sphingomyelin), and in synthesis of the neurotransmitter acetylcholine. Choline has been shown to exert neuroprotective effects, but the association between serum choline and cognitive performance has been scarcely investigated. Our aims are: 1) To study the association between serum total choline, phosphatidylcholine and sphingomyelin with cognitive performance in subjects with metabolic syndrome; and 2) to analyze genetic variants and dietary intake most associated with cholines in this population. METHODS: We analyzed 426 subjects (a…

2015

Brain structural alterations and neuropsychiatric symptoms have been described repeatedly in Fabry disease, yet cognitive deficits have been shown to be only mild. Here, we aimed to investigate neuropsychiatric symptoms and brain structure longitudinally. We expected no clinically relevant increase of neuropsychiatric symptoms in parallel to increased brain structural alterations. We assessed 14 Fabry patients (46.1 ± 10.8 years) who had participated in our investigation eight years ago. Patients engaged in neuropsychiatric testing, as well as structural magnetic resonance imaging and angiography to determine white matter lesions, hippocampal volume, and the diameter of the larger intracran…

Effect of Prognostic Risk Classification on Temsirolimus Efficacy and Safety Outcomes in Patients with Relapsed/Refractory Mantle Cell Lymphoma

2011

Abstract Abstract 2708 Background: The simplified Mantle Cell Lymphoma International Prognostic Index (MIPI) has been shown to be a good predictor of patient survival (Blood 2008;111:558–65; Blood 2010;115:1530–1533). This post hoc study analyzed data from a randomized, phase III clinical trial investigating temsirolimus (TEM) in relapsed/refractory mantle cell lymphoma (MCL) in which TEM 175/75 (175 mg for first 3 weeks then 75 mg weekly) demonstrated significantly longer progression-free survival (PFS) vs investigator's choice of therapy (INV; 4.8 vs 1.9 months, respectively; hazard ratio [HR]=0.44; P=.0009; J Clin Oncol 2009;27:3822–9). Patients receiving TEM 175/25 (175 mg for first 3 w…

Oral capecitabine and Vinorelbine in Metastatic Breast Cancer. A Retrospective Analysis of Tolerability and Activity

2012

ABSTRACT Background The purpose of this study was to retrospectively analyze toxicity profile and activity of an all-oral combination schedule of Capecitabine (Cape) and Vinorelbine (VNR) in metastatic breast cancer (MBC) patients (pts). Methods All pts treated had a histological confirmed diagnosis of breast cancer (BC). Each 3-week cycle of treatment consisted of 500 mg/m2 cape twice daily (2 weeks on, 1 week off), and 60 mg/m2 VNR on days 1 and 8. Results From June'07 to December'11 we analyzed 77 MBC pts. Median age was 52 years (range 34-73). 58 pts (75,3%) had a performance status (PS) ECOG 0; 13 pts (16,8%) PS1, 6 pts (7,8%) PS2. 5 pts (6,5%) had metastatic disease at time of diagnos…

Long-term outcome of antiandrogen monotherapy in advanced prostate carcinoma: 12-year results of a phase II study

2003

OBJECTIVE To present the long-term outcome of patients with locally advanced or metastatic prostate carcinoma treated by first-line antiandrogen monotherapy. PATIENTS AND METHODS From 1983 to 1990, 41 patients with advanced prostate carcinoma were treated with flutamide monotherapy until progression or the appearance of toxicity. Twenty-five patients (61%) had T3-T4N0M0 and 16 (39%) T2–4N0–3M1 prostate carcinoma. Consensus criteria were adopted to evaluate the response. Plasma testosterone and sexual function were recorded for the first 3 years. RESULTS Flutamide was administered for up to 147 months; seven patients (17%) interrupted the treatment because of toxicity. There was an objective…