Background
Methods
Study design and setting
Questionnaire
Characteristics | n | All (n = 796) | Video Gaming > 3 h/day (n = 192) | Video Gaming ≤ 3 h/day (n = 604) | P valuea |
---|---|---|---|---|---|
Ageb, y | 792 | 17.9 (0.7) | 18.1 (0.9) | 17.9 (0.7) | .008 |
Weight, kg | 577 | 73.0 (14.1) | 75.4 (17.8) | 72.2 (12.6) | .102 |
Height, cm | 578 | 178.1 (6.3) | 178.2 (7.0) | 178.2 (6.1) | .718 |
BMIc, kg/m2 | 577 | 23.0 (4.3) | 23.8 (5.5) | 22.7 (3.8) | .107 |
Underweight (BMI < 18.5), No. (%) | 47 (8.1) | 10 (7.5) | 37 (8.4) | .858 | |
Normal weight (18.5–24.9) No. (%) | 397 (68.8) | 88 (65.7) | 309 (69.8) | .395 | |
Overweight (BMI 25–29.9) No. (%) | 96 (16.6) | 20 (14.9) | 76 (17.2) | .598 | |
Obesity (BMI ≥ 30), No. (%) | 37 (6.4) | 16 (11.9) | 21 (4.7) | .008 | |
Body fat, % | 576 | 16.5 (8.4) | 19.3 (10.0) | 15.6 (7.6) | <.001 |
Waist circumference, cm | 577 | 82.0 (10.4) | 84.7 (13.2) | 81.1 (9.1) | .011 |
Muscle mass, % | 576 | 47.0 (4.8) | 45.3 (5.6) | 47.6 (4.4) | <.001 |
Self-rated health | 776 | .001 | |||
Poor, No. (%) | 56 (7.2) | 24 (12.8) | 32 (5.4) | ||
Good or average, No. (%) | 720 (92.8) | 164 (87.2) | 556 (94.6) | ||
Grip strength, kg | 576 | 45.0 (7.5) | 43.8 (7.8) | 45.4 (7.4) | .017 |
Light and brisk physical activity, median (interquartile range), MET-min weekly | 769 | 1013 (413–1875) | 615 (204–1286) | 1148 (563–2085) | <.001 |
< 500 MET-min, No. (%) | 219 (28.5) | 88 (47.3) | 131 (22.5) | <.001 | |
≥ 500 MET-min, No. (%) | 550 (71.5) | 98 (52.7) | 452 (77.5) | ||
Aerobic fitness (Polar Fitness Test), mL/min/kg | 563 | 52.9 (7.1) | 50.4 (6.6) | 53.7 (7.1) | <.001 |
Poor self-rated physical fitness, No. (%) | 781 | 190 (24.3) | 84 (44.4) | 106 (17.9) | <.001 |
Sitting during leisure time, h/d | 762 | 4.2 (2.3) | 5.8 (2.4) | 3.7 (2.0) | <.001 |
≥ 5 h/d, No. (%) | 273 (35.8) | 129 (69.0) | 144 (25.0) | <.001 | |
< 5 h/d, No. (%) | 489 (64.2) | 58 (31.0) | 431 (75.0) | ||
Mean consumption frequency, d/wk | |||||
Vegetables and fruits | 744 | 2.0 (1.5) | 1.6 (1.5) | 2.2 (1.5) | <.001 |
Sweetened soft drinks and energy drinks | 750 | 1.1 (1.0) | 1.4 (1.2) | 1.0 (0.9) | <.001 |
Salty foods | 747 | 1.0 (0.9) | 1.1 (1.0) | 1.0 (0.8) | .499 |
Sweet foods | 752 | 1.5 (1.1) | 1.5 (1.2) | 1.5 (1.0) | .455 |
Usually eats breakfast | 786 | <.001 | |||
Yes, No. (%) | 575 (73.2) | 118 (62.8) | 457 (76.4) | ||
No, No. (%) | 211 (26.8) | 70 (37.2) | 141 (23.6) | ||
Smokes currently, No. (%) | 784 | .851 | |||
Yes, No. (%) | 209 (26.7) | 52 (27.4) | 157 (26.4) | ||
No, No. (%) | 575 (73.2) | 128 (72.6) | 437 (73.6) | ||
Uses snuff currently, No. (%) | 787 | 189 (24.0) | 144 (23.4) | 145 (24.2) | .846 |
Binge drinks alcohol ≥1/wk., No. (%) | 786 | 172 (21.9) | 43 (23.1) | 129 (21.5) | .685 |
Physiological measurements
Statistical analysis
Results
Variables | Adjusted OR | 95% CI | P Value |
---|---|---|---|
Block 1: method = enter | |||
Sitting during leisure time, hours | 1.40 | 1.28–1.52 | <.001 |
Block 2: method = forward stepwise (LR) | |||
Low leisure-time physical activityb (vs. ≥ 500 MET-min weekly) | 1.94 | 1.29–2.91 | .001 |
Mean consumption frequency of vegetables and fruits, d/wk | 0.83 | 0.72–0.97 | .014 |
Mean consumption frequency of sweetened soft drinks and energy drinks, d/wk | 1.28 | 1.06–1.55 | .010 |