Associations between Physical Fitness, Bone Mass, and Structure in Older People

Table 1

Descriptive variables of the sample.

	Whole sample ()	Males ()	Females ()
Anthropometrics
Age (years)
Height (cm)
Weight (kg)
BMI (kg/cm^2)
Fitness variables
Balance (s)
Lower body strength (reps.)
Lower body flexibility (cm)
Agility (s)
Gait speed (s)
Aerobic capacity (m)
pQCT variables
Tt.BMC 4% (g)
Tt.Ar 4% (mm^2)
Tt.BMD 4% (mg/cm^3)
Tb.BMD 4% (mg/cm^3)
Tt.BMC 38% (g)
Tt.Ar 38% (mm^2)
Tt.BMD 38% (mg/cm^3)
Ct.BMD 38% (mg/cm^3)
Ct.Th 38% (mm)
Fracture load X 38% (N)
SSIp 38% (mm^3)
MCSA 66%(mm^2)
DXA variables
Trochanter aBMD (g/cm^2)
Neck aBMD (g/cm^2)
Ward’s triangle aBMD (g/cm^2)
Total hip aBMD (g/cm^2)
Lumbar spine aBMD (g/cm^2)
Subtotal lean mass (kg)

SD: standard deviation; reps: repetitions; pQCT: peripheral quantitative computed tomography; DXA: dual-energy X-ray absorptiometry; aBMD: areal bone mineral density; Tt.BMC: total bone mineral content; Tt.Ar: total bone area; Tt.BMD: total bone mineral density; Tb.BMD: trabecular bone mineral density; Ct.BMD: cortical bone mineral density; Ct.Th: cortical thicknes; MCSA: muscle area; SSIp: polar stress strain index. Statistical significant differences between sexes ().