Table 1.
Cross-sectional Analyses of Calcium Intake & Minutes of High-Impact Physical Activity (Geometric Means & Inter-Quartile Range at Baseline, 3, 9 and 12 Months
| All Participants | ||||||||
|---|---|---|---|---|---|---|---|---|
| Baseline | 3 Months | 9 Months | 12 Months | |||||
| Control | Exp | Control | Exp | Control | Exp | Control | Exp | |
| Calcium (mg/day) | 1066 (522) | 934 (502)* | 988 (693) | 1182 (691)** | 949 (500) | 1139 (773)** | 962 (609) | 1067 (577) |
| Calcium (mg/1000 kcal) | 539 (217) | 489 (289) | 542 (286) | 623 (289)** | 516 (231) | 563 (336) | 523 (270) | 545 (282) |
| Weekday High Impact PA (mins/day) | 29.2 (70) | 30.3 (39) | 15.8 (44) | 27.2 (50)* | 11.1 (30) | 18.2 (45)* | 12.0 (32) | 17.4 (50) |
| Calcium sample sizes range from 44-49 for Control Group and 62-67 for Experimental Group | ||||||||
| Physical Activity sizes ranges from 43-48 for Control Group and 62-66 for Experimental Group | ||||||||
| BOYS | ||||||||
| Baseline | 3 Months | 9 Months | 12 Months | |||||
| Control | Exp | Control | Exp | Control | Exp | Control | Exp | |
| Calcium (mg/day) | 1092 (513) | 1058 (449) | 1052 (592) | 1352 (541)** | 970 (533) | 1298 (708)** | 1045 (681) | 1172 (627) |
| Calcium (mg/1000 kcal) | 537 (255) | 505 (259) | 531 (285) | 641 (282)** | 514 (254) | 611 (279)* | 539 (328) | 569 (256) |
| Weekday High Impact PA (mins/day) | 35.8 (65) | 32.5 (39) | 13.2 (55) | 26.3 (38) | 14.8 (34) | 22.8 (66) | 19.1 (32) | 19.6 (55) |
| Calcium sample sizes range from 23-24 for Control Group and 22-24 for Experimental Group | ||||||||
| Physical Activity sizes ranges from 20-24 for Control Group and 22-25 for Experimental Group | ||||||||
| GIRLS | ||||||||
| Baseline | 3 Months | 9 Months | 12 Months | |||||
| Control | Exp | Control | Exp | Control | Exp | Control | Exp | |
| Calcium (mg/day) | 1039 (565) | 869 (489)* | 933 (618) | 1097 (600) | 928 (536) | 1061 (829) | 871 (550) | 1013 (585) |
| Calcium (mg/1000 kcal) | 542 (214) | 479 (213) | 553 (267) | 614 (284) | 518 (205) | 538 (348) | 504 (177) | 533 (304) |
| Weekday High Impact PA (mins/day) | 23.0 (61) | 29.1 (35) | 18.6 (39) | 27.6 (52) | 7.9 (29) | 15.9 (42) | 5.9 (32) | 16.1 (44)* |
| Calcium sample sizes range from 20-25 for Control Group and 40-43 for Experimental Group | ||||||||
| Physical Activity sizes ranges from 22-24 for Control Group and 39-41 for Experimental Group | ||||||||
Statistical tests used one-way ANOVA using log or square root transformed means.
*
p≤.10;
**
p≤.05 reflect difference in experimental group from control.