Children's metabolic expenditure during object projection skill performance: new insight for activity intensity relativity

Ryan S. Sacko, Danielle Nesbitt, Kerry McIver, Ali Brian, Farid Bardid, David F. Stodden

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Objective: To examine children’s energy expenditure (EE) during object projection skill performance at three intensity intervals. Methods: Children’s (42, Mage = 8.1) average metabolic equivalents of task (METs) were calculated using a COSMED K4b2 while they repeatedly performed blocks of kicking, throwing (overhand), and striking (two-handed) during 6, 12, and 30-s interval conditions. A repeated-measures analysis of covariance examined differences in METs while controlling for skill level. Results: Data indicated a main effect for interval condition (df = 2, 123, F = 94.36, p <.001, η2 =.605). Post hoc t-tests demonstrated decreasing performance interval times yielded progressively higher METs (p <.001) across the three conditions (30s = 4.5±0.8 METs, 12s = 6.3±1.3, 6s = 8.3±1.6). There also was a main effect for sex (df = 1,120, F = 52.28, p <.001 η2 =.305). Boys demonstrated higher METs at each performance interval (p <.001). Conclusion: Skill practice with a maximum of one trial every 30s resulted in the equivalent of at least moderate physical activity (>4.0 METs) and intervals of 6s demonstrated vigorous physical activity (>7.0 METs). Practicing/performing object projection skills, even at intervals that allow for adequate instruction and feedback (i.e., 1 trial/30s), promotes MVPA in children.

LanguageEnglish
Pages1755-1761
Number of pages7
JournalJournal of Sports Sciences
Volume37
Issue number15
Early online date22 Mar 2019
DOIs
Publication statusPublished - 3 Aug 2019

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Metabolic Equivalent
Health Expenditures
projection
expenditures
performance
Energy Metabolism
instruction
energy
Exercise

Keywords

  • metabolism
  • motor skills
  • physical education
  • physical activity
  • pediatrics

Cite this

Sacko, Ryan S. ; Nesbitt, Danielle ; McIver, Kerry ; Brian, Ali ; Bardid, Farid ; Stodden, David F. / Children's metabolic expenditure during object projection skill performance : new insight for activity intensity relativity. In: Journal of Sports Sciences. 2019 ; Vol. 37, No. 15. pp. 1755-1761.
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Children's metabolic expenditure during object projection skill performance : new insight for activity intensity relativity. / Sacko, Ryan S.; Nesbitt, Danielle; McIver, Kerry; Brian, Ali; Bardid, Farid; Stodden, David F.

In: Journal of Sports Sciences, Vol. 37, No. 15, 03.08.2019, p. 1755-1761.

Research output: Contribution to journalArticle

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