Table 1. Body composition and physical activity characteristics of Young Men (YM, 20-39 yrs),
Middle-Aged Men (MM, 40-59 yrs), and Older Men (OM, 60-81yrs). Data are means (ąSE).

 Variables

YM
(n=25)

MM
(n=24)

OM
(n=23)

Age (yrs)

  28.9 (1.3)

48.4 (.9)

  67.8 (1.3)

Height (cm)

179.4 (1.3)

178.7 (1.3)

  176.4 (1.7)

Weight (kg)

  88.3 (3.2)

  94.3 (3.8)

  82.2 (3.5)

BMI (kg · m-2)

  27.3 (.81)

  29.5 (1.1)

  26.2 (.7) b

Fat Mass (kg)

  21.8 (1.7)

  25.1 (1.7)

  20.8 (1.2)

Lean Body Mass (kg)

  65.9 (2.0)

  67.9 (2.1)

  60.0 (2.4) b

Left Leg Lean Mass (kg)

10.4 (.3)

10.3 (.4)

  9.0 (.3) a,b

Strenuous Exercise (bouts/week)

  0.89 (.22)

  .98 (.27)

  .57 (.29)

Moderate Exercise (bouts/week)

  1.56 (.35)

  2.50 (.52)

  1.91 (.44)

Mild Exercise (bouts/week)

  2.70 (.45)

  2.40 (.42)

  2.39 (.51)
BMI = body mass index. Strenuous, Moderate, Mild Exercise = raw score from Godin Leisure-Time Questionnaire.
a Significantly different (p < 0.05) between OM and YM.
b Significantly different (p < 0.05) between OM and MM.