Table 2. Associations of sedentary behavior with markers of cardiometabolic risk in boys.
| Continuous Cardiometabolic Risk | WC (cm) | BMI (Z-Score) | Insulin (pmol/L) | Glucose (mmol/L) | HDL-C (mmol/L) | Triglycerides (mmol/L) | hs-CRP (mg/L) | |
| Model 1 | ||||||||
| Sedentary Time (min/day) | 0.010 (0.004, 0.016)* | 0.040 (0.022, 0.059)* | 0.002 (0.001, 0.004)* | 0.001 (0.001, 0.002)* | 0.0001 (−0.0004, 0.001) | −0.0003 (−0.0007, 0.0001) | 0.001 (−0.0002, 0.001) | 0.004 (0.001, 0.006)* |
| Breaks in Sedentary Time (number/day) | −0.020 (−0.059, 0.018) | −0.093 (−0.215, 0.030) | −0.006 (−0.017, 0.004) | −0.004 (−0.010, 0.001) | −0.002 (−0.005, 0.002) | −0.001 (−0.004, 0.001) | −0.004 (−0.008, 0.001) | 0.002 (−0.014, 0.019) |
| Sedentary Bouts 1–4 Minutes (number/day) | −0.065 (−0.100, −0.003)* | −0.271 (−0.82, −0.161)* | −0.019 (−0.028, −0.009)* | −0.009 (−0.014, −0.005)* | −0.002 (−0.005, 0.002) | 0.001 (−0.002, 0.003) | −0.005 (−0.010, −0.001)* | −0.017 (−0.032, −0.002)* |
| Sedentary Bouts 5–9 Minutes (number/day) | 0.069 (−0.076, 0.214) | 0.357 (−0.103, 0.816) | 0.010 (−0.028, 0.049) | 0.006 (−0.015, 0.026) | −0.004 (−0.018, 0.009) | −0.008 (−0.018, 0.002) | 0.003 (−0.015, 0.021) | 0.077 (0.014, 0.139)* |
| Sedentary Bouts 10–14 Minutes (number/day) | 0.594 (0.279, 0.908)* | 2.526 (1.547, 3.506)* | 0.158 (0.074, 0.241)* | 0.078 (0.034, 0.121)* | −0.010 (−0.041, 0.020) | −0.026 (−0.048, −0.004)* | 0.038 (−0.001, 0.076) | 0.219 (0.084, 0.354)* |
| Sedentary Bouts 15–29 Minutes (number/day) | 0.391 (0.059, 0.723)* | 2.071 (1.034, 3.107)* | 0.122 (0.034, 0.210)* | 0.063 (0.017, 0.108)* | 0.006 (−0.025, 0.038) | −0.004 (−0.026, 0.019) | 0.006 (−0.035, 0.047) | 0.126 (−0.016, 0.269) |
| Sedentary Bouts 30+ Minutes (number/day) | 0.6620 (−0.015, 1.256) | 2.973 (0.962, 4.984)* | 0.217 (0.048, 0.386)* | 0.109 (0.021, 0.197)* | −0.006 (−0.065, 0.053) | −0.012 (−0.056, 0.031) | 0.049 (−0.029, 0.127) | 0.066 (−0.209, 0.341) |
| TV Viewing (hours/day) | 0.465 (0.204, 0.726)* | 0.904 (0.068, 1.740)* | 0.088 (0.017, 0.160)* | 0.041 (0.005, 0.078)* | 0.024 (−0.0001, 0.049) | −0.015 (−0.033, 0.003) | 0.027 (−0.006, 0.060) | 0.130 (0.017, 0.243)* |
| Computer/Video Game Use (hours/day) | 0.687 (0.300, 1.073)* | 1.629 (0.394, 2.863)* | 0.058 (−0.049, 0.164) | 0.066 (0.012, 0.119)* | 0.032 (−0.004, 0.068) | −0.043 (−0.069, −0.017)* | 0.028 (−0.021, 0.076) | 0.173 (0.007, 0.340)* |
| Model 2 | ||||||||
| Sedentary Time (min/day) | 0.011 (−0.019, 0.041) | 0.038 (−0.012, 0.087) | −0.001 (−0.009, 0.008) | 0.001 (−0.003, 0.004) | 0.002 (−0.001, 0.005) | −0.001 (−0.003, 0.001) | −0.0004 (−0.004, 0.003) | 0.003 (−0.009, 0.015) |
| Breaks in Sedentary Time (number/day) | −0.057 (−0.106, −0.008)* | −0.027 (−0.110, 0.057) | −0.026 (−0.040, −0.012)* | −0.002 (−0.008, 0.004) | 0.001 (−0.005, 0.006) | −0.001 (−0.005, 0.002) | −0.005 (−0.011, 0.001) | 0.005 (−0.014, 0.025) |
| Sedentary Bouts 1–4 Minutes (number/day) | −0.063 (−0.111, −0.015)* | −0.052 (−0.133, 0.030) | −0.028 (−0.041−0.016)* | −0.001 (−0.007, 0.005) | −0.001 (−0.006, 0.004) | −0.001 (−0.004, 0.003) | −0.002 (−0.008, 0.004) | −0.00002 (−0.019, 0.019) |
| Sedentary Bouts 5–9 Minutes (number/day) | −0.048 (−0.245, 0.148) | 0.080 (−0.244, 0.404) | −0.039 (−0.094, 0.015) | −0.007 (−0.030, 0.017) | −0.005 (−0.025, 0.015) | −0.011 (−0.025, 0.003) | 0.005 (−0.019, 0.029) | 0.047 (−0.029, 0.123) |
| Sedentary Bouts 10–14 Minutes (number/day) | 0.473 (−0.006, 0.952) | 0.334 (−0.468, 1.135) | 0.169 (0.035, 0.302)* | 0.001 (−0.057, 0.060) | −0.041 (−0.091, 0.009) | −0.030 (−0.065, 0.004) | 0.018 (−0.041, 0.077) | −0.073 (−0.262, 0.115) |
| Sedentary Bouts 15–29 Minutes (number/day) | −0.165 (−–0.735, 0.405) | −0.721 (−1.653, 0.211) | 0.128 (−0.029, 0.285) | −0.033 (−0.101, 0.035) | −0.004 (−0.063, 0.055) | 0.026 (−0.015, 0.067) | −0.072 (−0.140, −0.003)* | −0.279 (−0.498, −0.060)* |
| Sedentary Bouts 30+ Minutes (number/day) | 0.321 (−0.411, 1.054) | 0.194 (−1.021, 1.409) | 0.153 (−0.051, 0.357) | 0.038 (−0.050, 0.126) | 0.004 (−0.070, 0.077) | 0.007 (−0.046, 0.060) | 0.017 (−0.072, 0.106) | −0.171 (−0.447, 0.106) |
| TV Viewing (hours/day) | 0.249 (−0.020, 0.519) | −0.176 (−0.623, 0.272) | 0.050 (−0.026, 0.125) | 0.003 (−0.029, 0.036) | 0.020 (−0.008, 0.048) | −0.001 (−0.021, 0.018) | −0.006 (−0.039, 0.027) | 0.050 (−0.055, 0.155) |
| Computer/Video Game Use (hours/day) | 0.485 (0.084, 0.886)* | 0.799 (0.141, 1.457)* | 0.016 (−0.097, 0.128) | 0.031 (−0.017, 0.079) | 0.013 (−0.028, 0.055) | −0.041 (−0.070 −0.012)* | 0.015 (−0.034, 0.064) | 0.145 (−0.011, 0.300) |
Model 1. Unadjusted analyses.
Model 2. Adjusted for accelerometer wear time, age, light and moderate-to-vigorous physical activity, total sedentary time (except when exposure), BMI Z-score (except when included in outcome), Tanner stage, parental income and level of education. Data are presented as beta coefficients (95% confidence intervals). n = 286.
Associations assessed using linear regression analysis. Data are presented as beta coefficients (95% confidence intervals). n = 286.
*
= p<0.05.
Fasting insulin and plasma triglycerides have been transformed using a Box-Cox transformation.
Continuous cardiometabolic risk score was calculated by summing z-scores for insulin, glucose, triglycerides, negative HDL-cholesterol, blood pressure, BMI, and waist circumference for each participant.
BMI, body mass index; HDL-C, high density lipoprotein cholesterol; hs-CRP, high sensitivity c-reactive protein; MVPA, moderate-to-vigorous physical activity; TV, television; WC, waist circumference.