Validity of the relative percent concept for equating training intensity

Victor Katch, Arthur Weltman, Stanley Sady, Patty Freedson

Research output: Contribution to journalArticle

140 Scopus citations

Abstract

The validity of the relative percent concept for equating training intensity was investigated using the point of metabolic acidosis (anaerobic threshold) as the criterion variable. Percent oxygen uptake, heart rate and metabolic acidosis were determined at 60, 70, and 80% of max heart rate on a bicycle ergometer test (N=31). At 60 and 70% of max heart rate only one individual was definitely in metabolic acidosis. At 80% max heart rate 17 subjects were working at a level above the point of metabolic acidosis while 14 were working at or below this point. Thus, it was suggested that even if subjects are exercising at the same relative percent maximum HR, the metabolic stress using metabolic acidosis as the criterion is not constant across subjects. It was further shown that the regression of percent {Mathematical expression}O2 max on percent max HR was a spurious one resulting in poor prediction of individual {Mathematical expression}O2 values. The data presented suggest that the relative percent concept for equating exercise or subsequent training intensity needs careful re-evaluation.

Original languageEnglish (US)
Pages (from-to)219-227
Number of pages9
JournalEuropean Journal of Applied Physiology and Occupational Physiology
Volume39
Issue number4
DOIs
StatePublished - Dec 1978
Externally publishedYes

Keywords

  • Anaerobic threshold
  • Exercise
  • Intensity
  • Metabolic acidosis
  • Training
  • {Mathematical expression}O max

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Physiology

Fingerprint Dive into the research topics of 'Validity of the relative percent concept for equating training intensity'. Together they form a unique fingerprint.

  • Cite this