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Int J Exerc Sci. 2017 May 01;10(3):379-389. eCollection 2017.

Better Health-Related Fitness in Youth: Implications for Public Health Guidelines.

International journal of exercise science

Mitch Barton, Allen W Jackson, Scott B Martin, James R Morrow, Trent A Petrie, Christy A Greenleaf

Affiliations

  1. Department of Kinesiology, Recreation, and Health Promotion, University of North Texas, Denton, TX, USA.
  2. Department of Kinesiology, Exercise Science & Health Promotion, University Wisconsin-Milwaukee, Milwaukee, WI, USA.

PMID: 28515834 PMCID: PMC5421978

Abstract

Public health guidelines for physical activity (PA) behaviors are being updated with 2018 as a proposed release date. Currently, ≥60 minutes of daily PA are recommended for youth. Thus, the purpose of this study was to investigate the association between reported days of aerobic PA and health-related fitness (HRF). Participants included 4448 students in grades 6-8. Self-reported days of ≥60 minutes of aerobic PA was obtained. HRF was assessed with FitnessGram. Discriminant analysis indicated that weekly days of aerobic PA related to HRF. Adolescents who participated in ≥5 days of weekly aerobic PA generally had better fitness results than those with ≤4 days. Chi-square analyses indicated the highest percentages of adolescents in the FitnessGram Healthy Fitness Zone™ (HFZ) for each test item were those with ≥5 days of aerobic PA. These findings provided initial support that the impact of aerobic PA on HRF plateaus at 5 days per week. Thus, adolescents may be able to improve HRF even if they do not meet the currently recommended guidelines for daily PA.

Keywords: Adolescents; FitnessGram; physical fitness

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