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. 2022 Mar 23;37(12):e103. doi: 10.3346/jkms.2022.37.e103

Table 2. Physical examination and laboratory test results according to assessment periods.

Variables Pre-lockdown (n = 97) Post-lockdown (n = 97) P value
Height, cm 156.77 ± 10.20 161.09 ± 9.59 < 0.001
Body weight, kg 67.30 (58.50–75.95) 72.80 (63.85–82.80) < 0.001
Waist circumference, cm 87.01 ± 9.96 87.09 ± 9.81 0.905
Obesity status 0.020
Overweight 11 (11.3) 15 (15.5)
Mild to moderate obesity 63 (64.9) 50 (51.5)
Severe obesity 23 (23.7) 32 (33.0)
BMI, kg/m2 27.30 (25.25–29.50) 28.40 (26.40–30.95) < 0.001
BMI z-score 2.56 (2.01–2.94) 2.62 (2.03–3.18) 0.014
Fat mass index, kg/m2 11.36 ± 2.02 11.81 ± 2.29 0.002
Fat free mass index, kg/m2 16.05 (14.69–17.36) 16.66 (15.29–18.08) < 0.001
Post 1 min heart rate 113.04 ± 15.88 125.37 ± 15.61 < 0.001
Upper muscular strength index 0.48 ± 0.13 0.45 ± 0.14 0.011
Lower muscular strength index 0.83 ± 0.19 0.84 ± 0.17 0.259
SBP, mmHg 118.62 ± 13.71 121.58 ± 12.49 0.009
DBP, mmHg 70.26 ± 9.53 72.39 ± 10.41 0.030
AST, U/L 24.0 (19.5–32.0) 23.0 (18.0–34.0) 0.419
ALT, U/L 24.0 (16.0–39.5) 27.0 (16.5–51.5) 0.023
GGT, U/L 21.0 (16.0–29.5) 22.0 (15.5–32.5) 0.069
Triglyceride, mg/dL 105.0 (74.5–137.5) 111.0 (85.0–152.5) 0.013
HDL-C, mg/dL 51.0 (45.5–58.0) 47.0 (42.0–52.5) < 0.001
LDL-C, mg/dL 106.41 ± 27.09 102.58 ± 23.69 0.070
HOMA-IR 4.72 (3.21–6.98) 5.26 (3.77–8.55) 0.003
25(OH Vitamin D, ng/mL 23.39 ± 6.78 19.05 ± 5.98 < 0.001
Calorie intake, kcal 2,186.8 ± 451.8 1,905.9 ± 574.1 < 0.001
Dietary quality (DQI) 60.80 ± 7.56 56.73 ± 7.44 < 0.001
Fruit intake, frequency/wk 3.5 (1.5–7.0) 3.5 (1.5–7.0) 0.465
Sugar-sweetened beverage intake, frequency/wk 1.5 (1.5–3.5) 1.5 (0.0–3.5) 0.879
Fast-food intake, frequency/wk 1.5 (0.38–1.5) 1.5 (0.0–1.5) 0.397
Snack intake, frequency/wk 1.5 (1.5–3.5) 1.5 (0.0–1.5) 0.076
Vegetable intake, frequency/wk 3.5 (3.5–14.0) 3.5 (1.5–5.5) 0.560
Physical activity (METS) 2,760 (1,380–5,460) 1,980 (400–3,840) 0.061
Screen time (hr/day) 2.00 (1.50–3.00) 3.75 (3.00–4.50) < 0.001
Exercise frequency, frequency/wk 3.5 (3.5–5.5) 3.5 (1.5–5.5) < 0.001
Sedentary time, min/day 420.0 (190.0–585.0) 420.0 (247.5–682.5) 0.070
Walking duration, min/day 20.0 (10.0–30.0) 20.0 (0.0–50.0) 0.762
Sleeping duration, min/day 532.5 (502.5–563.8) 515.0 (480.0–570.0) 0.575

Data are presented as mean ± standard deviation or median (interquartile range) or number (%).

P values of paired t-test (normative variables) or Wilcoxon signed rank test (non–normative variables) or McNemar–Bowker test (categorical variable).

BMI = body mass index, SBP = systolic blood pressure, DBP = diastolic blood pressure, AST = aspartate amino–transferase, ALT = alanine aminotransferase, GGT = gamma–glutamyl transferase, HDL–C = high–density lipoprotein cholesterol, LDL–C = low–density lipoprotein cholesterol, HOMA–IR = homeostatic model assessment for insulin resistance, DQI = Dietary Quality Index, METS = metabolic equivalent of tasks.