Table 2.
Condition | Before | After* | Change (95% CI) | p value | |
---|---|---|---|---|---|
iCa, mg/dL | Calcium | 4.87 ± 0.26 | 4.68 ± 0.21 | −0.19 (−0.26, −0.13) | <.001 |
Control | 4.87 ± 0.23 | 4.58 ± 0.16 | −0.29 (−0.36, −0.21) | <.001 | |
Ca vs. Control | −0.09 (−0.18, −0.01) | 0.04 | |||
PTH, pg/mL | Calcium | 51.2 ± 17.1 | 79.4 ± 38.9 | 28.3 (14.9, 41.6) | <.001 |
Control | 55.0 ± 21.2 | 85.6 ± 34.5 | 30.58 (18.5, 42.6) | <.001 | |
Ca vs. Control | 6.0 (−2.6, 14.5) | 0.16 | |||
CTX, ng/mL | Calcium | 0.37 ± 0.16 | 0.42 ± 0.14 | 0.05 (0.01, 0.10) | 0.02 |
Control | 0.41 ± 0.22 | 0.47 ± 0.21 | 0.06 (0.02, 0.11) | 0.007 | |
Ca vs. Control | 0.02 (−0.03, 0.07) | 0.37 | |||
Hct, % | Calcium | 40.73 ± 6.39 | 42.73 ± 2.03 | 0.50 (−1.23, 2.23) | 0.53 |
Control | 41.74 ± 3.12 | 42.22 ± 2.66 | 0.80 (−0.20, 1.80) | 0.10 | |
Ca vs. Control | 0.30 (−1.35, 1.95) | 0.69 |
iCa, ionized calcium; PTH, parathyroid hormone; Hct; hematocrit; CTX, C-terminal telopeptides of type I collagen
samples were obtained immediately after exercise for iCa, PTH, and HCT and 30 minutes after exercise for CTX