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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Osteoporos Int. 2014 Aug 8;25(10):2485–2491. doi: 10.1007/s00198-014-2825-z

Table 2.

Correlation coefficients between pre- and post-intervention changes body composition outcomes and exercise session adherence measures

Percent physical activity
sessions completed
Mean duration of physical
activity sessions
Mean intensity of physical
activity sessionsa
Anthropometric outcomes
  Body weight −.301 −.386 −.089
  BMI −.293 −.307 .246
DXA-measured outcomes
  Bone mineral density .022 −.131 .240
  Bone mineral content −.325 −.100 −.021
  Total fat (g) −.309 −.404 .293
  Total percent fat −.067 −.441 .300
  Trunk fat (g) −.247 −.343 .443
  Trunk percent fat −.039 −.386 .409
  Total lean mass (g) −.245 −.204 −.039
pQCT measured outcomes
  Muscle density −.013 −.054 −.269
  Muscle area −.354 −.200 .011
  Cortical density −.063 .450 −.154
  Marrow density .381 .057 −.136

All correlations are Spearman. No correlations were statistically significant at the P<.05 level

BMI body mass index, DXA dual-energy X-ray absorptiometry, pQCT peripheral quantitative computed tomography

a

Mean intensity of physical activity sessions was calculated by percent of estimated maximum heart rate expended at each session