Effects of physical training on cardiorespiratory fitness in children

Kerry J. Stewart, Bernard Gutin

Research output: Contribution to journalArticlepeer-review

Abstract

Changes in submaximal and maximal HR and [vdot]02 as a result of 8 wk of interval training were studied in boys aged 10-12; 13 boys trained while 11 acted as controls. Training HR’s averaged approximately 90% of the mean maximal HR. [vdot]O2 max did not change significantly with training. The apparently high threshold for a training effect on the [vdot]O2 max in children is probably related to their naturally active lives: the stresses induced by short-term training are probably small as compared to the overall activities of children. On the other hand, submaximal heart rate during bicycle and treadmill exercise decreased significantly with training. The O2 cost of these submaximal tasks remained unchanged. The findings suggest that the use of [vdot]O2 max as the only training criterion for cardiorespiratory fitness may be misleading. Since most work tasks proceed at a submaximal rate, and a training-induced improvement in submaximal response was demonstrated without improvements at maximal effort, perhaps submaximal physiological and performance measures are more important than maximal ones in the assessment of cardiorespiratory fitness.

Original languageEnglish (US)
Pages (from-to)110-120
Number of pages11
JournalResearch Quarterly of the American Alliance for Health, Physical Education and Recreation
Volume47
Issue number1
DOIs
StatePublished - Mar 1976
Externally publishedYes

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Nephrology
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Medicine(all)

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