## Theses and Dissertations @ UNI

#### Availability

Open Access Dissertation

#### Abstract

This study investigated the prediction of maximal oxygen consumption in boys, ages 11 to 14 years, from a shuttle walk protocol and other field measurements appropriate to use in school settings. Maximal oxygen consumption was determined in 67 subjects using a treadmill protocol (M = 52.3 ml$\cdot$kg$\sp{-1}\cdot$min$\sp{-1}$, SD = 8.4). Subjects performed an 800-yard shuttle walk as fast as possible on a 20-yard course, with elapsed time recorded. Telemetrically measured postwalk heart rate, height, weight, sum of triceps and subscapular skinfold measurements, body mass index, and exercise frequency were also considered as predictors. Multiple linear regression analysis was used to predict maximal oxygen consumption, expressed in both l$\cdot$min$\sp{-1}$ and ml$\cdot$kg$\sp{-1}\cdot$min$\sp{-1}$. Using the shuttle walk time with the postwalk heart rate produced poor predictions (R =.25, SEE = 0.612 l$\cdot$min$\sp{-1}$; and R =.52, SEE = 7.2 ml$\cdot$kg$\sp{-1}\cdot$min$\sp{-1}$). However, reasonably accurate predictions were obtained simply from physical characteristics, which can be easily measured in school settings. A prediction of absolute maximal oxygen consumption (l$\cdot$min$\sp{-1}$) using height, weight, and sum of skinfolds was: VO$\sb{\rm 2max}$ = $-$1.330 + (0.040 $\*$ Height in in.) + (0.017 $\*$ Weight in lbs.) $-$(0.023 $\*$ Sum of Skinfolds in mm); R =.89, SEE = 0.292 l$\cdot$min$\sp{-1}$. A prediction of relative maximal oxygen consumption (ml$\cdot$kg$\sp{-1}\cdot$min$\sp{-1}$) using only the sum of skinfolds was: VO$\sb{\rm 2max}$ = 62.528 $-$ (0.446 $\*$ Sum of Skinfolds); r =.80, SEE = 5.0 ml$\cdot$kg$\sp{-1}\cdot$min$\sp{-1}$. Also examined was the accuracy of postexercise self-pulse counting by boys, ages 11 to 14 years. Heart rates were simultaneously measured via self-pulse counting and telemetry, following an 800-yard shuttle walk. A paired t test and a Pearson's product-moment coefficient of correlation were used in the analysis. Self-pulse counting produced significantly lower results than those recorded by telemetry ($M\sb{\rm diff}$ = 21.0 beats per minute, SD$\sb{\rm diff}$ = 22.8 beats per minute, p $<$.001). The Pearson's product-moment coefficient of correlation was r =.68. It was found, therefore, that 11- to 14-year-old boys could not accurately monitor postexercise heart rate.

1990

#### Degree Name

Doctor of Education

#### Department

Department of Educational Administration and Counseling

Norman L. McCumsey

12-1990

#### Object Description

1 PDF file (v, 87 pages)

EN

application/pdf

COinS