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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Endocrinol. | doi: 10.3389/fendo.2018.00701

Lower performance in the six minute walk test in obese youth with cardiometabolic risk clustering.

 Giuliana Valerio1, 2*, Maria Rosaria Licenziati3, Paola Tortorelli2, Lidia Federica Calandriello3, Paola Alicante4 and  Luca Scalfi4
  • 1Università degli Studi di Napoli Parthenope, Italy
  • 2Dipartimento Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, Italy
  • 3Dipartimento di Neuroscienze, AORN Santobono Pausilipon, Italy
  • 4Department of Public Health, University of Naples Federico II, Italy

Background:
Physical fitness is an important index of health. Our aim was to assess whether cardiorespiratory and/or musculoskeletal components of physical fitness were associated with cardiometabolic risk clustering in obese youth, using adapted and validated field tests.
Methods:
We evaluated 252 children and adolescents (132 males, 52.4%, mean age 10.9±1.9 years) with primary obesity. All subjects performed the 6-minute walk test (6MWT) for assessing aerobic fitness, the standing broad jump and the 30 s-chair stand tests for lower-body muscular strength, and the handgrip test for upper body isometric strength. Cardiometabolic risk (CMR) clustering was defined as having two or more of the following risk factors: high SBP and/or DBP, impaired fasting glucose, high triglycerides, and low HDL-Cholesterol.
Results:
CMR clustering was found in 44 (17.5%) obese youth. Youth with CMR clustering had a lower cardiorespiratory fitness, as assessed by 6MWT, compared to those without CMR clustering. On the contrary, no difference was found with respect to musculoskeletal fitness. The number of CMR factors were significantly associated with gender and BMI-SDS and negatively with age and 6MW distance. The 6MW distance was independently associated with age and negatively with sedentary time and CMR clustering.
Conclusions:
A lower performance in the 6MWT may be considered as an additional trait of CMR clustering in obese youth. The 6MWT may represent a valuable, simple and low cost test to estimate the cardiorespiratory fitness in youth with obesity.

Keywords: Aerobic fitness., Cardiometabolic risk, muscular fitness, Obesity, Six-minute walk test, Youth

Received: 31 Jul 2018; Accepted: 06 Nov 2018.

Edited by:

Reina Villareal, Baylor College of Medicine, United States

Reviewed by:

Yi Wang, Baker Heart and Diabetes Institute, Australia
Valeria Guglielmi, Dipartimento di Medicina dei Sistemi, Università di Roma Tor Vergata, Italy  

Copyright: © 2018 Valerio, Licenziati, Tortorelli, Calandriello, Alicante and Scalfi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Giuliana Valerio, Università degli Studi di Napoli Parthenope, Naples, Italy, giuliana.valerio@libero.it