PMID: 15235321Jul 6, 2004Paper

Longitudinal changes in cardiorespiratory fitness: measurement error or true change?

Medicine and Science in Sports and Exercise
Andrew S JacksonSteven N Blair

Abstract

This study examined the thesis that the reported Aerobics Center Longitudinal Study (ACLS) mortality reductions associated with improved cardiorespiratory fitness were because of measurement error of serial treadmill tests. We tested the research hypothesis that longitudinal changes in cardiorespiratory fitness of the ACLS cohort were a multivariate function of changes in self-report physical activity (SR-PA), resting heart rate, and body mass index (BMI). We used the results of three serial maximal treadmill tests (T1, T2, and T3) to evaluate the serial changes in cardiorespiratory fitness of 4675 men. The mean duration between the three serial tests examined was: T2 - T1, 1.9 yr; T3 - T2, 6.1 yr; and T3 - T1, 8.0 yr. Maximum and resting heart rate, BMI, SR-PA, and maximum Balke treadmill duration were measured on each occasion. General linear models analysis showed that with change in maximum heart rate statistically controlled change in treadmill time performance was a function of independent changes in SR-PA, BMI, and R-HR. These variables accounted for significant (P < 0.001) proportions (7%, 9%, and 12%) of the change in treadmill time variance. Those men who increased their SR-PA and lowered their BMI and resting heart r...Continue Reading

References

Mar 6, 1986·The New England Journal of Medicine·R S PaffenbargerC C Hsieh
Jul 27, 1984·JAMA : the Journal of the American Medical Association·R S PaffenbargerC H Steinmetz
Jul 1, 1996·Medicine and Science in Sports and Exercise·A S JacksonS N Blair
Aug 26, 1998·Medicine·D P KontoyiannisD C Hooper
Mar 10, 2000·American Journal of Physiology. Heart and Circulatory Physiology·T M Wilson, H Tanaka
Mar 15, 2002·The New England Journal of Medicine·Jonathan MyersJ Edwin Atwood
May 17, 2003·Medicine and Science in Sports and Exercise·Paul T Williams

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Citations

May 8, 2008·Medicine and Science in Sports and Exercise·Paul T Williams
Aug 1, 2006·Applied Nursing Research : ANR·Rebecca KremanScott Shurmur
Jan 16, 2007·Medicine and Science in Sports and Exercise·Andrew S Jackson, Daniel J Green
May 5, 2005·Medicine and Science in Sports and Exercise·Paul T Williams
Mar 17, 2011·Medicine and Science in Sports and Exercise·Francisco B OrtegaMichael Sjöström

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