Alejandro Pérez-Bey1, Víctor Segura-Jiménez2, Jorge Del Rosario Fernández-Santos2, Irene Esteban-Cornejo3, Sonia Gómez-Martínez4, Oscar L Veiga5, Ascensión Marcos4, José Castro-Piñero2. 1. Department of Physical Education, Faculty of Education Sciences, University of Cádiz, Puerto Real, Spain. Electronic address: alejandro.perezperez@uca.es. 2. Department of Physical Education, Faculty of Education Sciences, University of Cádiz, Puerto Real, Spain. 3. Center for Cognitive and Brain Health, Department of Psychology, Northeastern University, Boston, MA; PROFITH "PROmoting FITness and Health through physical activity" research group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain. 4. Immunonutrition Group, Institute of Food Science, Technology and Nutrition, Spanish National Research Council, Madrid, Spain. 5. Department of Physical Education, Sports, and Human Movement, Faculty of Teacher Training and Education, Autonomous University of Madrid, Madrid, Spain.
Abstract
OBJECTIVES: To test the associations of muscular fitness and body mass index (BMI), individually and combined, with clustered cardiovascular disease risk factors in children and adolescents and to analyze the mediator role of BMI in the association between muscular fitness and clustered cardiovascular disease risk factors. STUDY DESIGN: In total, 239 children (113 girls) and 270 adolescents (128 girls) participated in this cross-sectional study. Height and weight were assessed, and BMI was calculated. A cardiovascular disease risk factors index (CVDRF-I) was created from the combination of the following variables: waist circumference, systolic blood pressure, triglycerides, high-density lipoprotein cholesterol, and glucose. Handgrip strength/weight and standing long jump tests were used to assess muscular fitness. A muscular fitness index was computed from the combination of both tests. RESULTS: Muscular fitness index was associated with CVDRF-I in children of both sexes and adolescent boys; however, these associations disappeared after accounting for BMI. BMI was associated with CVDRF-I in both children and adolescents, even after adjusting for muscular fitness (all P < .001). In male and female children and in adolescent boys, the association between muscular fitness and CVDRF-I was mediated by BMI (all P < .001). Because there was no association between muscular fitness and CVDRF-I in adolescent girls, the mediation hypothesis was discarded. CONCLUSIONS: BMI is an independent predictor of CVDRF-I in children and adolescents of both sexes. Conversely, the effect of muscular fitness on CVDRF-I seems to be fully mediated by BMI levels in male and female children and in adolescent boys.
OBJECTIVES: To test the associations of muscular fitness and body mass index (BMI), individually and combined, with clustered cardiovascular disease risk factors in children and adolescents and to analyze the mediator role of BMI in the association between muscular fitness and clustered cardiovascular disease risk factors. STUDY DESIGN: In total, 239 children (113 girls) and 270 adolescents (128 girls) participated in this cross-sectional study. Height and weight were assessed, and BMI was calculated. A cardiovascular disease risk factors index (CVDRF-I) was created from the combination of the following variables: waist circumference, systolic blood pressure, triglycerides, high-density lipoprotein cholesterol, and glucose. Handgrip strength/weight and standing long jump tests were used to assess muscular fitness. A muscular fitness index was computed from the combination of both tests. RESULTS:Muscular fitness index was associated with CVDRF-I in children of both sexes and adolescent boys; however, these associations disappeared after accounting for BMI. BMI was associated with CVDRF-I in both children and adolescents, even after adjusting for muscular fitness (all P < .001). In male and female children and in adolescent boys, the association between muscular fitness and CVDRF-I was mediated by BMI (all P < .001). Because there was no association between muscular fitness and CVDRF-I in adolescent girls, the mediation hypothesis was discarded. CONCLUSIONS: BMI is an independent predictor of CVDRF-I in children and adolescents of both sexes. Conversely, the effect of muscular fitness on CVDRF-I seems to be fully mediated by BMI levels in male and female children and in adolescent boys.
Authors: Tiago Rodrigues de Lima; Priscila Custódio Martins; Yara Maria Franco Moreno; Jean-Philippe Chaput; Mark Stephen Tremblay; Xuemei Sui; Diego Augusto Santos Silva Journal: Sports Med Date: 2022-01-12 Impact factor: 11.928
Authors: Paula Roldão da Silva; Géssika Castilho Dos Santos; Jadson Marcio da Silva; Waynne Ferreira de Faria; Raphael Gonçalves de Oliveira; Antonio Stabelini Neto Journal: J Exerc Sci Fit Date: 2020-06-18 Impact factor: 3.103