Elderly men who exercise or do not (mean ± standard deviation)
Athletes (N = 10) |
Controls (N = 12) |
|
---|---|---|
Height (m) Weight (kg) BSA (sqr m) BMI (kg per sqr m) Systolic BP at rest (mm Hg) Diastolic BP at rest (mm Hg) Max VO2 (L) Max VO2 (mL per kg per min) Max Exercise capacity (W) Max Exercise capacity (W per kg) Max heart rate (bpm) |
1.79 ± 0.06 72.5 ± 8.7 1.90 ± 0.13 22.6 ± 2.1 151 ± 26 78 ± 7 2.91 ± 0.52 41 ± 7 254 ± 31 3.5 ± 0.4 150 ± 9 |
1.75 ± 0.06 78.4 ± 11 1.93 ± 0.13 25.8 ± 3.5 148 ± 14 81 ± 7 2.10 ± 0.29 26 ± 5 172 ± 19 2.2 ± 0.4 153 ± 8 |
BSA, body size area; BMI, body mass index; Max VO2, maximal oxygen uptake |
Approx histograms from 70-95-100 rule of thumb
Use the diagram to explain how to sketch an approximate histogram based on the mean and standard deviation — about 70% of the area within s of the mean, 95% within 2s and almost all within 3s.
Discuss how this helps to assess the overlap between the Athletes and Controls for each variable.
Mention the differences between the groups for the Max VO2 and Max Exercise variables.
Mention that these are only rough indications — more advanced statistical methods are needed to properly assess the differences between the Athletes and Controls. (And these are based on the means and standard deviations.)
The table was published in the Official Journal of the American College of Sports Medicine. The table describes 'anthropometric data and maximal exercises capacity' of two groups of elderly men — 10 who continued to do regular exercise (athletes) and another 12 who had not continued with exercise into old age (controls). All values are printed in the form (mean ± standard deviation).