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Cardiorespiratory fitness in adolescents before and after the COVID-19 confinement: a prospective cohort study.
López-Bueno, Rubén; Calatayud, Joaquín; Andersen, Lars Louis; Casaña, José; Ezzatvar, Yasmín; Casajús, José Antonio; López-Sánchez, Guillermo Felipe; Smith, Lee.
  • López-Bueno R; Department of Physical Medicine and Nursing, University of Zaragoza, Zaragoza, Spain. rlopezbu@unizar.es.
  • Calatayud J; National Research Centre for the Working Environment, Copenhagen, Denmark. rlopezbu@unizar.es.
  • Andersen LL; National Research Centre for the Working Environment, Copenhagen, Denmark.
  • Casaña J; Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain.
  • Ezzatvar Y; National Research Centre for the Working Environment, Copenhagen, Denmark.
  • Casajús JA; Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain.
  • López-Sánchez GF; Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain.
  • Smith L; Faculty of Health Sciences, University of Zaragoza, Zaragoza, Spain.
Eur J Pediatr ; 180(7): 2287-2293, 2021 Jul.
Article in English | MEDLINE | ID: covidwho-1139355
ABSTRACT
Long periods of free-movement restrictions may negatively affect cardiorespiratory fitness and health. The present study investigated changes after the COVID-19 confinement in maximal oxygen intake (VO2 max) levels in a sample of 89 Spanish school children aged 12 and 14 years at baseline (49.8% girls). The 20-m shuttle run test served to estimate VO2 max before and after the COVID-19 confinement. Paired t-tests estimated an overall difference of - 0.5 ml.kg-1.min-1 (SD 0.3) (p = 0.12), whereas the highest significant reductions were observed for girls aged 14 years (- 1.5 ml.kg-1.min-1 (SD 0.6) (p < 0.05)). Boys aged 14 years showed a slight increase (0.4 ml.kg-1.min-1 (SD 0.5) (p = 0.44)), whereas boys aged 12 years presented an important decrease (- 1.2 ml.kg-1.min-1 (SD 0.7) (p = 0.14)). Healthy Fitness Zone (HFZ) levels also experienced a decrease of - 3.4% as regards baseline levels over the examined period. All the examined subgroups showed lower levels in relation to a normal VO2 max rate development, although girls aged 14 and boys aged 12 years accounted for the highest part.

Conclusion:

The results indicate that COVID-19 confinement might delay the normal development of VO2 max in adolescents. Strategies to tackle this concerning decline are warranted. What is Known • First study analyzing cardiorespiratory fitness levels in teenagers after COVID-19 confinement. What is New • Important delay in maximal oxygen intake identified in a sample of Spanish teenagers. • These results should be considered to develop strategies of a more active lifestyle in teenagers during and after confinements.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Cardiorespiratory Fitness / COVID-19 Type of study: Cohort study / Experimental Studies / Observational study / Prognostic study Limits: Adolescent / Child / Female / Humans / Male Language: English Journal: Eur J Pediatr Year: 2021 Document Type: Article Affiliation country: S00431-021-04029-8

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Cardiorespiratory Fitness / COVID-19 Type of study: Cohort study / Experimental Studies / Observational study / Prognostic study Limits: Adolescent / Child / Female / Humans / Male Language: English Journal: Eur J Pediatr Year: 2021 Document Type: Article Affiliation country: S00431-021-04029-8