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Table 3 Cross-sectional associations of movement behaviours with TBLH BMC and lean mass in females and males

From: Cross-sectional and longitudinal associations between the 24-hour movement behaviours, including muscle and bone strengthening activity, with bone and lean mass from childhood to adolescence

 

Age 6 to 9 yearsa

Age 9 to 11 yearsb

Age 15 to 17 yearsc

β (95% CI)

p

β (95% CI)

p

β (95% CI)

p

Females

TBLH BMC

 MVPA

0.001 (-0.001 to 0.002)

0.331

0.001 (-0.003 to 0.005)

0.629

0.005 (-0.016 to 0.025)

0.652

 Sport and exercise

0.003 (-0.002 to 0.008)

0.270

0.008 (0.003 to 0.013)

0.004

0.008 (-0.001 to 0.018)

0.081

 Sedentary time

-0.000 (-0.001 to 0.000)

0.218

-0.001 (-0.002 to 0.001)

0.219

-0.002 (-0.007 to 0.002)

0.287

 Screen time

0.000 (-0.001 to 0.001)

0.929

-0.001 (-0.003 to 0.001)

0.167

-0.001 (-0.003 to 0.001)

0.460

 Sleep

0.001 (-0.002 to 0.003)

0.653

0.001 (-0.003 to 0.005)

0.794

0.008 (0.000 to 0.015)

0.043

TBLH lean mass

 MVPA

0.004 (-0.036 to 0.043)

0.851

0.142 (0.081 to 0.204)

<0.001

0.430 (0.115 to 0.744)

0.009

 Sport and exercise

0.013 (-0.099 to 0.125)

0.817

0.101 (-0.020 to 0.223)

0.101

0.358 (0.247 to 0.470)

<0.001

 Sedentary time

-0.017 (-0.033 to -0.001)

0.033

0.013 (-0.015 to 0.041)

0.344

-0.005 (-0.084 to 0.074)

0.895

 Screen time

0.019 (-0.008 to 0.045)

0.163

0.030 (-0.009 to 0.068)

0.127

-0.008 (-0.045 to 0.029)

0.667

 Sleep

0.018 (-0.046 to 0.081)

0.582

-0.108 (-0.173 to -0.043)

0.001

-0.096 (-0.218 to 0.026)

0.122

Males

TBLH BMC

 MVPA

0.001 (-0.001 to 0.002)

0.233

0.000 (-0.004 to 0.004)

0.985

-0.008 (-0.024 to 0.009)

0.357

 Sport and exercise

0.004 (0.001 to 0.007)

0.016

0.005 (-0.001 to 0.011)

0.100

0.011 (-0.001 to 0.022)

0.066

 Sedentary time

0.000 (-0.000 to 0.001)

0.264

-0.002 (-0.003 to 0.000)

0.093

-0.003 (-0.008 to 0.001)

0.146

 Screen time

-0.000 (-0.001 to 0.001)

0.984

-0.001 (-0.003 to 0.001)

0.338

-0.002 (-0.004 to -0.000)

0.020

 Sleep

0.001 (-0.001 to 0.003)

0.292

0.001 (-0.003 to 0.006)

0.532

-0.005 (-0.018 to 0.008)

0.430

TBLH lean mass

 MVPA

0.035 (-0.003 to 0.073)

0.070

0.116 (0.053 to 0.178)

<0.001

0.126 (-0.240 to 0.491)

0.494

 Sport and exercise

0.091 (0.022 to 0.161)

0.011

0.221 (0.092 to 0.350)

0.001

0.337 (0.142 to 0.532)

0.001

 Sedentary time

0.017 (0.000 to 0.034)

0.045

0.037 (0.006 to 0.069)

0.020

-0.017 (-0.113 to 0.079)

0.726

 Screen time

-0.008 (-0.034 to 0.018)

0.544

-0.037 (-0.080 to 0.006)

0.094

-0.037 (-0.080 to 0.006)

0.092

 Sleep

0.028 (-0.023 to 0.078)

0.278

-0.003 (-0.098 to 0.092)

0.945

0.104 (-0.106 to 0.314)

0.328

  1. BMC Bone mineral content, MVPA Moderate to vigorous physical activity, TBLH Total body less head
  2. Values are unstandardised regression coefficients, their 95% confidence intervals, and p-values. The regression coefficient represents the difference in TBLH BMC, and lean mass associated with a 10-minute average daily difference in each movement behaviour
  3. Bold emphasis indicates statistical significance (p < 0.05)
  4. aEstimates adjusted for age, stature, pubertal status, and fat mass, measured at age 6 to 9 years, and study group. Estimates for TBLH BMC additionally adjusted for lean mass measured at age 6 to 9 years. MVPA and sedentary time are mutually adjusted for each other
  5. bEstimates adjusted for age, stature, pubertal status, and fat mass, measured at age 9 to 11 years, and study group. Estimates for TBLH BMC additionally adjusted for lean mass measured at age 9 to 11 years. MVPA and sedentary time are mutually adjusted for each other
  6. cEstimates adjusted for age, stature, pubertal status, and fat mass, measured at age 15 to 17 years, and study group. Estimates for TBLH BMC additionally adjusted for lean mass measured at age 15 to 17 years. MVPA and sedentary time are mutually adjusted for each other
  7. At age 6 to 9 years, n = 184 females and 181 males for MVPA and sedentary time, n = 229 females and 248 males for sport and exercise participation, n = 229 females and 248 males for screen time, n = 186 females and 190 males for sleep
  8. At age 9 to 11 years, n = 157 females and 130 males for MVPA and sedentary time, n = 196 females and 187 males for sport and exercise participation, n = 196 females and 187 males for screen time, n = 158 females and 131 males for sleep
  9. At age 15 to 17 years, n = 40 females and 66 males for MVPA and sedentary time, n = 103 females and 119 males for sport and exercise participation, n = 103 females and 118 males for screen time, n = 81 females and 96 males for sleep
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BMC Public Health

ISSN: 1471-2458

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