Purpose: Peak oxygen uptake (VO2peak) is a crucial health marker, extensively studied in adults for its prognostic value. However, its significance in the older persons, especially octogenarians, remains underexplored due to limited representation in research. This study aims to assess the predictive power of VO2peak for survival in individuals aged 80 and above.
Methods: We included individuals aged 80 or older who underwent cardiopulmonary exercise tests at a single center. Mortality rates were compared based on VO2peak relative to 80% of predicted values (%VO2peak). We employed three multivariate Cox regression models: Model 1 (unadjusted), Model 2 (adjusted for age) and Model 3 (adjusted for age and stroke).
Results: Among 188 participants (mean age 83.3 ± 3 years, 68.9% male), 22 (11.7%) passed away during a median follow-up of 494 days. Non-survivors tended to be older with lower VO2peak and %VO2peak. All models demonstrated associations between %VO2peak ≤ 80% and mortality: HR = 3.19 (95% CI: 1.30-7.86, p = 0.011) for M1; HR = 3.12 (95% CI: 1.26-7.74, p = 0.013) for M2 and HR = 2.80 (95% CI: 1.11-7.06, p = 0.028) for M3.
Conclusion: In the context of an aging population, this study underscores the enduring significance of VO2peak as a survival predictor among the older person, including octogenarians. These findings carry profound implications for tailoring healthcare strategies to address the evolving demographic landscape.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s41999-024-00949-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advanced room-temperature cured encapsulant film for crystalline silicon solar modules: enhancing efficiency with luminescent down-shifting, flame retardancy, and UV resistance.
Mater Horiz
January 2025
State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Solar energy sources have garnered significant attention as a renewable energy option. Despite this, the practical power conversion efficiency (PCE) of widely used silicon-based solar cells remains low due to inefficient light utilization. In this study, carbon dots (APCDs) were prepared a hydrothermal method using ammonium polyphosphate and -phenylenediamine, then incorporated into a silicone-acrylic emulsion (CAS) to create a luminescent down-shifting (LDS) layer for solar cells.
View Article and Find Full Text PDFFlame retardancy and durability of cotton fabric modified with high-efficiency diboraspiro rings groups flame retardant.
Int J Biol Macromol
January 2025
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China. Electronic address:
The synthesis of highly efficient and environmentally friendly flame retardants through the synergistic interaction of boron, phosphorus and nitrogen is becoming a new research direction. In this study, N-DBSPA, a flame retardant with high flame retardancy, high thermal stability and high efficiency, was prepared by the reaction between pentaerythritol borate and amino trimethylene phosphate, and the limiting oxygen index (LOI) of the modified cotton fabric increased from 18 % to 44.7 % at a weight gain (WG) of 20.
View Article and Find Full Text PDFEthanol-induced ammonium polyphosphate-silver gel paint: breaking the trade-off between conductivity, flame retardancy and adhesion in single-layer functional coatings.
Mater Horiz
January 2025
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China.
Electrical fires pose significant threats to the lives and property safety of people. Although utilizing coatings to impart conductivity and flame retardancy to materials is convenient and reliable, traditional layer-by-layer preparation methods have the limitations of cost, convenience and scalability. Therefore, a single-layer coating that simultaneously imparts excellent conductivity and flame retardancy to materials presents broader application prospects.
View Article and Find Full Text PDFPrevalence, predictors, and mortality of Super-Fontan patients in a single-centre nationwide cohort.
Cardiol Young
January 2025
Children's Heart Centre, Motol University Hospital, Prague, Czech Republic.
Aims: To evaluate the prevalence, long-term mortality, and clinical characteristics in total cavopulmonary connection patients with excellent functional outcomes.
Methods And Results: A retrospective study of cardiopulmonary exercise test results in 288 patients after total cavopulmonary connection from a single-centre nationwide database. A subgroup of 88 (30.
Understanding the reproductive ecology of Macrognathus aculeatus in wetland (Gajner beel) ecosystem: insights into eco-climatic influences in northwestern Bangladesh.
Environ Sci Pollut Res Int
January 2025
Department of Fisheries, University of Rajshahi, Rajshahi, 6205, Bangladesh.
The lesser spiny eel, Macrognathus aculeatus (Bloch, 1786), holds substantial economic importance as a food fish in South Asia, due to its exceptional nutritional value. This study was conducted to investigate the reproductive ecology of M. aculeatus within the Gajner beel wetland ecosystem in northwestern Bangladesh, with a specific focus on size at sexual maturity, spawning season, and fecundity in relation to eco-climatic variables.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!