Journal of Obesity / 2021 / Article / Tab 2

Research Article

Wearable Activity Tracking Device Use in an Adolescent Weight Management Clinic: A Randomized Controlled Pilot Trial

Table 2

Comparison between groups at different time points. Independent t-test value is adjusted by Bonferroni family-wise error adjustment.

Baseline
Measure (SD)ATI (n = 18)Control (n = 30)Total (n = 48) value

Weight, kg98.53 (21.02)104.28 (32.48)102.12 (28.61)0.06
Waist circumference, cm110.89 (9.94)114.1 (16.42)112.82 (14.03)0.59
ALT, U/L48 (27.55)53.92 (58.07)51.7 (48.54)0.67
AST, U/L31.33 (12.89)37.92 (37.47)35.45 (30.56)0.43
ALP, U/L145.73 (88.75)161.71 (84.09)155.56 (85.11)0.58
GGT, U/L28.07 (17.76)29.5 (26.61)28.97 (23.48)0.86
CRP, mg/L0.44 (0.24)0.6 (0.45)0.54 (0.39)0.16

6 weeks
Measure (SD)ATI (n = 12)Control (n = 17)Total (n = 29) value

BMI, kg/m234.84 (5.92)39.89 (11.56)37.8 (9.82)0.41
 Change in BMI−1.28 (−7.4–4.84)+1.59 (−7.13–10.31)+0.32 (−5.36–5.99)
Weight, kg96.84 (23.81)107.51 (36.16)103.09 (31.6)1.00
 Change in weight−1.69 (−25.1–21.71)3.23 (−24.59–31.04)0.97 (−17.68–19.61)
Waist, cm115.43 (20.54)115.4 (26.35)115.41 (22.74)1.00
ALT, U/L40.3 (14.2)64.71 (68.37)54.54 (52.74)1.00
AST, U/L40 (16.92)41.71 (38.58)41.09 (31.3)1.000
ALP, U/L173.63 (86.95)137.86 (102.75)150.86 (94.49)1.00
GGT, U/L27.83 (9.52)38.33 (43.11)34.83 (34.81)1.00
CRP, mg/L0.62 (0.28)0.34 (0.11)0.44 (0.22)0.26

12 weeks
Measure (SD)ATI (n = 10)Control (n = 12)Total (n = 22) value

BMI, kg/m235.43 (6.03)38.03 (12.69)36.85 (10.09)1.00
 Change in BMI−0.69 (−7.17–5.78)−0.28 (−10.09–9.54)−0.64 (−6.85–5.57)
Weight, kg100.06 (24.08)104.98 (39.99)102.74 (33.05)1.00
 Change in weight+1.53 (−23.24–26.3)+0.7 (−30.6–31.99)+0.62 (−19.79–21.03)
Waist, cm106.9 (5.37)110.5 (26.45)108.7 (15.72)1.00
ALT, U/L31.75 (7.85)43.33 (11.93)36.71 (10.8)0.53
AST, U/L25.25 (9.88)24.67 (4.93)25 (7.55)1.00
ALP, U/L92.5 (20.04)97 (35.76)94.43 (25.16)1.00
GGT, U/L27.75 (11.7)30.6 (10.64)29.33 (10.5)1.00
CRP, mg/L0.5 (0.42)0.85 (0.64)0.68 (0.54)1.00

18 weeks
Measure (SD)ATI (n = 10)Control (n = 13)Total (n = 23) value

BMI, kg/m235.87 (7.01)35.53 (9.39)35.68 (8.26)1.00
 Change in BMI−0.25 (−6.72–6.23)−2.77 (−12.31–6.76)−1.81 (−7.92–4.31)
Weight, kg102.7 (27.01)99.15 (33.15)100.69 (30.02)1.00
 Change in weight+4.17 (−20.6–28.94)−5.13 (−35.56–25.29)−1.43 (−21.54–18.67)
Waist, cm101.3 (3.05)114.2 (22.8)109.36 (18.56)0.83
ALT, U/L62 (20.66)97 (138.84)83.88 (107.08)1.00
AST, U/L49 (6.24)67.2 (94.53)60.38 (72.15)1.00
ALP, U/L141.67 (106.02)160.2 (105.22)153.25 (98.13)1.00
GGT, U/L25.67 (16.86)42.2 (59.24)36 (46.47)1.00
CRP, mg/L0.4 (0.14)0.2 (0.1)0.28 (0.15)0.46

ATI, activity tracking intervention; BMI, body mass index; GGT, gamma-glutamyl transferase; CRP, C-reactive protein; AST, aspartate aminotransferase; ALT, alanine aminotransferase.