Table 5.
Observed differences in body weight, fat, and muscle mass between active and nonactive users.
| Weight group | Males | Females | |||||
|
|
Active | Nonactive | P value | Active | Nonactive | P value | |
| Obesity class I (n=131) | |||||||
|
|
Participants, n | 36 | 29 | N/Aa | 32 | 34 | N/A |
|
|
Body weight (kg), mean (SD) | –3.40 (3.11)b | –1.48 (2.60)b | .02 | –2.03 (2.22)b | –1.37 (3.37)b | .02 |
|
|
Body fat (%), mean (SD) | –0.91 (0.76)b | –0.48 (0.64)b | .009 | –0.44 (0.73)b | –0.36 (0.97)b | .09 |
|
|
Body muscle (%), mean (SD) | 0.86 (0.73)b | 0.43 (0.62)b | .005 | 0.40 (0.68)b | 0.37 (0.90)b | .16 |
| Obesity class II (n=74) | |||||||
|
|
Participants, n | 22 | 6 | N/A | 26 | 20 | N/A |
|
|
Body weight (kg), mean (SD) | –5.31 (5.00)b | –2.70 (2.24)c | .02 | –1.73 (2.10)b | –1.60 (3.68)c | .82 |
|
|
Body fat (%), mean (SD) | –0.77 (0.98)b | –0.10 (0.11)c | .02 | –0.37 (0.46)b | –0.19 (0.26)c | .30 |
|
|
Body muscle (%), mean (SD) | 0.72 (0.93)b | 0.17 (0.21)c | .02 | 0.38 (0.48)b | 0.16 (0.19)c | .22 |
| Obesity class III (n=39) | |||||||
|
|
Participants, n | 8 | 5 | N/A | 18 | 8 | N/A |
|
|
Body weight (kg), mean (SD) | –5.55 (5.24)b | –5.49 (3.98)b | .88 | –2.42 (2.89)b | –1.60 (2.25)b | .27 |
|
|
Body fat (%), mean (SD) | –0.51 (0.39)b | –0.58 (0.36)c | .66 | –0.33 (0.55)b | –0.39 (0.29)b | .56 |
|
|
Body muscle (%), mean (SD) | 0.51 (0.38)b | 0.54 (0.32)c | .83 | 0.32 (0.52)b | 0.35 (0.29)b | .72 |
aN/A: not applicable.
bSignificant at P<.05.
cTended toward significance at P<.09.