Arthur Weltman

Validity of the relative percent concept for equating training intensity

SummaryThe 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

Exercise Recovery, Lactate Removal, and Subsequent High Intensity Exercise Performance.

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Onset of Metabolic Acidosis (Anaerobic Threshold) as a Criterion Measure of Submaximum Fitness

O2 max on percent max HR was a spurious one resulting in poor prediction of individual

All-Out versus a Steady-Paced Cycling Strategy for Maximal Work Output of Short Duration

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Comparison of Peak Performance Measures in Children Ages 6 to 8, 9 to 10, and 11 to 13 Years.

O2 values. The data presented suggest that the relative percent concept for equating exercise or subsequent training intensity needs careful re-evaluation.

Relationship between Individual Differences in a Steady Pace Endurance Running Performance and Maximal Oxygen Intake

Forty-seven active boys and girls, 7 to 12 years of age, underwent a comprehensive medical and physical evaluation in order to assess their prevalence of single and multiple coronary heart disease risk factors. Each subject received a densiometric determination of body composition, blood lipid analysis, pulmonary function and a physical work capacity test to assess their peak oxygen consumption (Vo2max). Obesity (greater than 25% fat), elevated triglycerides (greater than 100 mg %) and the presence of Type IV hyperlipoproteinemia appear to be the more predominant risk factors. Twenty-nine (62%) of the children had at least one risk factor. Of these, seventeen had two or more risk factors with one subject having as many as five factors.