ABSTRACT
Background/Study context: The aim of the present work was to investigate the association of Waist-to-Height Ratio (WHtR) with Successful Aging (SA) status and compare it to classic anthropometric indices, among middle-aged and older individuals.
Methods: Among various socio-demographic, clinical and lifestyle characteristics, height, weight, waist circumference (WC), Waist-to-Hip Ratio (WHR) and WHtR of the Greek participants, over 50 years old, enrolled in the ATTICA (n = 1,128) and the MEDIS (n = 2,221) in relation to SA; SA was evaluated using the validated Successful Aging Index (SAI, range 0–10) comprising of health-related, social, lifestyle, and clinical parameters.
Results: WHtR was inversely associated with SAI with every 0.1-unit increase, lowering SAI by almost 0.5 units (b-coefficient±SE: −4.71 ± 0.26; 95%CI: −5.21, −4.20). Also, WHtR was more strongly associated with SAI (b = −0.352), surpassing the effect of age and sex (b = −0.347 and 0.11, respectively). With respect to the other anthropometric indices (weight, height, WC, WHR), WHtR exhibited the highest explanatory ability (Adjusted R2 = 0.345); the higher the adjusted R2 the higher explanatory ability.
Conclusions: WHtR was revealed as the best determinant of successful aging, with respect to other anthropometric indices (weight, height, WC, WHR). The present findings are of significant public health importance for better understanding the role of body mass distribution on the aging process.
Acknowledgments
Authors are particularly grateful to the men and women from all areas that participated in the ATTICA and MEDIS studies, as well as to both studies investigators.
Author Contributions
EK conceived the research question, EK and AF carried out the analysis and completed the draft of the manuscript, DP designed the supervised the study and the interpretation of data analyses, CP, ALM, and EP contributed to the design of study and interpretation of data. CC, AF, ST, and KG contributed to the interpretation of data analyses. All authors contributed to the critical revision of the manuscript and approved its final version.
Conflict of interest
The authors have no conflicts of interest to declare.