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Table 4 Linear Mixed Models for Substituting Awake Sedentary Boutsa with Higher-intensity Physical Activity and Cardiometabolic Risk Factors

From: Sedentary patterns and cardiometabolic risk factors in Mexican children and adolescents: analysis of longitudinal data

 

WC (cm) b

SBP (mm Hg)

DBP (mm Hg)

Log glucose (mg/dL)

Log TG (mg/dL)

Log HDL-C (mg/dL)

Log insulin (μIU/mL)

Log HOMA-IR

N = 533, # obs. = 932

N = 533, # obs. = 931

N = 533, # obs. = 931

N = 390, # obs. = 683

N = 390, # obs. = 683

N = 390, # obs. = 683

N = 390, # obs. = 683

N = 390, # obs. = 683

▪ 1 visit (n = 134,25.14%)

▪ 1 visit (n = 135,25.33%)

▪ 1 visit (n = 135,25.33%)

▪ 1 visit (n = 97,24.87%)

▪ 1 visit (n = 97,24.87%)

▪ 1 visit (n = 97,24.87%)

▪ 1 visit (n = 97,24.87%)

▪ 1 visit (n = 97,24.87%)

▪ 2 visits (n = 399,74.86%)

▪ 2 visits (n = 398,74.67%)

▪ 2 visits (n = 398,74.67%)

▪ 2 visits (n = 293,75.13%)

▪ 2 visits (n = 293,75.13%)

▪ 2 visits (n = 293,75.13%)

▪ 2 visits (n = 293,75.13%)

▪ 2 visits (n = 293,75.13%)

Substituting sedentary bout duration with light activity (minutes/ day)

Crude modelc

β

0.07

0.17*

0.02

0.0021*

−0.0047

0.0008

−0.0108*

− 0.0078

Back transformed β

–

–

–

0.21%

−0.47%

0.08%

−1.07%

−0.78%

95% CI

(−0.02, 0.16)

(0.07, 0.26)

(−0.05, 0.09)

(0.0007, 0.0035)

(−0.0099, 0.0004)

(−0.0013, 0.0028)

(− 0.0165, − 0.0051)

(−0.014, − 0.0016)

Adjusted modelc

β

−0.01

0.05

−0.04

0.0012

−0.0035

0.0013

−0.0087*

−0.0075

Back transformed β

–

–

–

0.12%

−0.35%

0.13%

−0.87%

−0.75%

95% CI

(−0.05, 0.03)

(−0.05, 0.15)

(− 0.12, 0.03)

(− 0.0003, 0.0027)

(−0.0088, 0.0019)

(− 0.0008, 0.0034)

(− 0.0146, − 0.0028)

(−0.0139, − 0.0011)

Substituting sedentary bout duration with MVPA activity

Crude modeld

β

−0.29*

−0.14

− 0.09

−0.0006

− 0.0097

0.0013

− 0.0107

−0.0125

(minutes/ day)

Back transformed β

–

–

–

−0.06%

−0.97%

0.13%

−1.06%

−1.24%

95% CI

(−0.47, − 0.12)

(− 0.32, 0.05)

(−0.23, 0.05)

(− 0.0033, 0.0021)

(− 0.0189, − 0.0005)

(−0.0024, 0.005)

(− 0.0211, − 0.0003)

(−0.0238, − 0.0013)

Adjusted modeld

β

−0.07

− 0.12

−0.07

− 0.0005

−0.0079

0.0022

−0.0085

− 0.0089

Back transformed β

–

–

–

−0.05%

−0.79%

0.22%

−0.85%

− 0.89%

95% CI

(−0.1454, 0.0004)

(− 0.3, 0.05)

(− 0.21, 0.06)

(−0.0031, 0.0022)

(− 0.0171, 0.0013)

(− 0.0015, 0.0059)

(−0.0188, 0.0019)

(− 0.0201, 0.0022)

Substituting sedentary bout frequency with light activity (count/day)

Crude modele

β

0.5

1.18*

0.17

0.0145*

−0.0348

0.0061

−0.075*

−0.0541

Back transformed β

–

–

–

0.01%

−3.42%

0.61%

−7.23%

−5.27%

95% CI

(−0.14, 1.14)

(0.53, 1.83)

(−0.32, 0.65)

(0.0045, 0.0245)

(−0.0703, 0.0008)

(−0.0082, 0.0204)

(− 0.1147, − 0.0352)

(−0.0975, − 0.0108)

Adjusted modele

β

−0.11

0.35

−0.32

0.0074

−0.0248

0.0081

−0.0585*

−0.0515

Back transformed β

–

–

–

0.74%

−2.45%

0.81%

−5.68%

−5.02%

95% CI

(−0.38, 0.16)

(−0.3, 1.01)

(− 0.81, 0.18)

(− 0.0031, 0.0180)

(−0.0618, 0.0122)

(− 0.0067, 0.0228)

(− 0.0996, − 0.0173)

(−0.0961, − 0.0069)

Substituting sedentary bout frequency with MVPA activity (count/day)

Crude modelf

β

−2.12*

−1

−0.58

−0.0031

− 0.0717

0.0126

− 0.0604

−0.0736

Back transformed β

–

–

–

−0.31%

−6.92%

1.27%

−5.86%

−7.10%

95% CI

(−3.35, −0.9)

(−2.3, 0.31)

(−1.55, 0.39)

(−0.0215, 0.0153)

(− 0.1358, − 0.0076)

(−0.0134, 0.0386)

(− 0.1331, 0.0124)

(− 0.1521, 0.0048)

Adjusted modelf

β

−0.54

−0.88

− 0.44

−0.0034

− 0.0584

0.0203

− 0.0429

−0.0467

Back transformed β

–

–

–

−0.34%

−5.67%

2.05%

−4.20%

−4.56%

95% CI

(−1.05, −0.03)

(−2.13, 0.38)

(− 1.39, 0.51)

(− 0.0217, 0.0149)

(− 0.1228, 0.006)

(−0.0056, 0.0462)

(− 0.1152, 0.0295)

(− 0.1247, 0.0314)

  1. aA bout was defined as 5 minutes of uninterrupted time performing a specific activity intensity. Within a bout, we allowed for up to 30-second of change in the physical activity intensity before terminating the bout
  2. bWaist circumference models were additionally adjusted for body mass index
  3. cCrude model includes bout duration spent in sedentary and light physical activity, and adjusted model was adjusted for mother’s enrollment in the calcium intervention study, parity status, child’s age, sex, total time of physical activity, and pubertal onset
  4. dCrude model includes bout duration spent in sedentary and MVPA physical activity, and adjusted model was adjusted for mother’s enrollment in the calcium intervention study, parity status, child’s age, sex, total time of physical activity, and pubertal onset
  5. eCrude model includes bout frequency spent in sedentary and light physical activity, and adjusted model was adjusted for mother’s enrollment in the calcium intervention study, parity status, child’s age, sex, total time of physical activity, and pubertal onset
  6. fCrude model includes bout frequency spent in sedentary and MVPA physical activity, and adjusted model was adjusted for mother’s enrollment in the calcium intervention study, parity status, child’s age, sex, total time of physical activity, and pubertal onset
  7. * p < 0.00625
  8. ** p < 0.0001
  9. Back-transformed β is expressed as a percentage of change
  10. Abbreviations: WC Waist circumference, SBP Systolic blood pressure, DBP Diastolic blood pressure, TG Triglycerides, HDL-C High density lipoprotein cholesterol, HOMA-IR Homeostatic model assessment of insulin resistance
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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