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Table 4 Longitudinal 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 years âž” Age 15 to 17 yearsa

Age 9 to 11 years âž” Age 15 to 17 yearsb

β (95% CI)

p

β (95% CI)

p

Females

 TBLH BMC

  MVPA

0.008 (0.002 to 0.014)

0.010

0.010 (-0.001 to 0.021)

0.082

  Sport and exercise

0.014 (-0.006 to 0.034)

0.160

0.020 (0.008 to 0.032)

0.002

  Sedentary time

-0.000 (-0.003 to 0.002)

0.914

0.001 (-0.003 to 0.005)

0.598

  Screen time

-0.001 (-0.006 to 0.004)

0.755

-0.003 (-0.009 to 0.003)

0.346

  Sleep

-0.003 (-0.015 to 0.008)

0.558

-0.005 (-0.015 to 0.005)

0.306

 TBLH lean mass

  MVPA

0.066 (-0.075 to 0.207)

0.354

0.272 (0.091 to 0.454)

0.004

  Sport and exercise

0.202 (-0.215 to 0.620)

0.339

0.343 (0.016 to 0.670)

0.040

  Sedentary time

-0.049 (-0.101 to 0.003)

0.064

0.021 (-0.059 to 0.102)

0.598

  Screen time

0.110 (-0.031 to 0.252)

0.125

0.101 (-0.026 to 0.227)

0.118

  Sleep

0.126 (-0.135 to 0.388)

0.339

-0.165 (-0.349 to 0.019)

0.077

Males

 TBLH BMC

  MVPA

0.003 (-0.005 to 0.011)

0.476

0.001 (-0.011 to 0.012)

0.887

  Sport and exercise

0.012 (-0.000 to 0.025)

0.059

0.027 (0.006 to 0.048)

0.012

  Sedentary time

-0.000 (-0.004 to 0.003)

0.966

-0.001 (-0.007 to 0.005)

0.700

  Screen time

-0.002 (-0.007 to 0.004)

0.543

-0.001 (-0.008 to 0.007)

0.852

  Sleep

-0.001 (-0.011 to 0.010)

0.918

-0.009 (-0.024 to 0.005)

0.215

 TBLH lean mass

  MVPA

0.092 (-0.077 to 0.261)

0.282

0.164 (-0.059 to 0.387)

0.147

  Sport and exercise

0.306 (-0.103 to 0.715)

0.141

0.721 (0.327 to 1.115)

<0.001

  Sedentary time

0.016 (-0.068 to 0.099)

0.710

0.042 (-0.087 to 0.171)

0.522

  Screen Time

0.063 (-0.056 to 0.181)

0.296

-0.091 (-0.222 to 0.039)

0.167

  Sleep

0.382 (0.138 to 0.626)

0.003

-0.015 (-0.278 to 0.249)

0.913

  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
  3. The regression coefficient represents the difference in TBLH BMC and lean mass at age 15 to 17 years associated with a 10-minute average daily difference in each movement behaviour at age 6 to 9 years and age 9 to 11 years
  4. Bold emphasis indicates statistical significance (p < 0.05)
  5. aEstimates for TBLH BMC at age 15 to 17 years adjusted for age, stature, pubertal status, lean mass, fat mass and study group measured at age 15 to 17 years, and TBLH BMC measured at age 6 to 9 years. Estimates for TBLH lean mass at age 15 to 17 years adjusted for age, stature, pubertal status, fat mass and study group measured at age 15 to 17 years, and TBLH lean mass measured at age 6 to 9 years. MVPA and sedentary time are mutually adjusted for each other
  6. bEstimates for TBLH BMC at age 15 to 17 years adjusted for age, stature, pubertal status, lean mass, fat mass and study group measured at age 15 to 17 years, and TBLH BMC measured at age 9 to 11 years. Estimates for TBLH lean mass at age 15 to 17 years adjusted for age, stature, pubertal status, fat mass and study group measured at age 15 to 17 years, and TBLH lean mass measured at age 9 to 11 years. MVPA and sedentary time are mutually adjusted for each other
  7. At age 6 to 9 years to age 15 to 17 years, n = 78 females and 87 males for MVPA and sedentary time, n = 102 females and 112 males for sport and exercise and screen time, n = 79 females and 90 males for sleep
  8. At age 9 to 11 years to age 15 to 17 years, n = 83 females and 75 males for MVPA and sedentary time, n = 103 females and 104 males for sport and exercise and screen time, n = 84 females and 76 males for sleep
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BMC Public Health

ISSN: 1471-2458

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