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Table 4 Associations between moderate to vigorous PA, light PA and SB (minutes/day) with body composition, fasting serum insulin, [β (95 % CI)] and metabolic syndrome [OR (95 % CI)]

From: Does duration of physical activity bouts matter for adiposity and metabolic syndrome? A cross-sectional study of older British men

  BMI (kg/m2)   WC (cm)   FMI (kg/m2)   Insulin (mmol/l)   MS  
  N = 1019 N = 1023 N = 966 N = 962 N = 907
  β (95 % CI) β (95 % CI) β (95 % CI) β (95 % CI) OR (95 % CI)
Model 1; Total minutes/day
Model 1a
 Total MVPA mins/day −0.024 (−0.031,−0.017) −0.080 (−0.101,−0.060) −0.020 (−0.026,−0.014) −0.024 (−0.036,−0.012) 0.987 (0.981,0.993)
Model 1b
 Total LPA mins/day −0.011 (−0.015,−0.007) −0.034 (−0.045,−0.023) −0.009 (−0.013,−0.006) −0.009 (−0.015,−0.002) 0.997 (0.994,1.000)
Model 1c
 Total SB mins/day 0.011 (0.008,0.013) 0.034 (0.025,0.042) 0.009 (0.006,0.011) 0.009 (0.004,0.014) 1.004 (1.002,1.006)
Model 2; Minutes/day in bouts
Model 2a
 MVPA mins/day in bouts 1–9 mins −0.020 (−0.030,−0.009) −0.068 (−0.099,−0.036) −0.016 (−0.025,−0.007) −0.018 (−0.036,0.000) 0.991 (0.982,1.000)
 MVPA mins/day in bouts ≥10 mins −0.031 (−0.046,−0.016) −0.100 (−0.144,−0.057) −0.026 (−0.039,−0.013) −0.034 (−0.059,−0.010) 0.980 (0.966,0.995)
 Coefficients equal to each othera   p = 0.30   p = 0.30   p = 0.29   p = 0.35   p = 0.3
Model 2b
 LPA mins/day in bouts 1–9 mins −0.018 (−0.024,−0.012) −0.048 (−0.065,−0.030) −0.013 (−0.018,−0.008) −0.022 (−0.032,−0.012) 0.994 (0.990,0.999)
 LPA mins/day in bouts ≥10 mins 0.011 (−0.003,0.026) 0.006 (−0.037,0.049) 0.001 (−0.011,0.013) 0.032 (0.008,0.056) 1.004 (0.993,1.015)
 Coefficients equal to each othera   0.002   0.05   0.09   p = 0.0005   p = 0.2
Model 2c
 SB mins/day in bouts 1–15 mins 0.000 (−0.007,0.007) 0.009 (−0.012,0.030) 0.002 (−0.004,0.008) −0.003 (−0.014,0.009) 0.998 (0.992,1.003)
 SB mins/day in bouts 16–30 mins 0.006 (−0.001,0.013) 0.022 (−0.000,0.043) 0.006 (−0.000,0.012) 0.017 (0.005,0.030) 1.001 (0.996,1.007)
 SB mins/day in bouts 31–60 mins 0.007 (0.001,0.012) 0.033 (0.017,0.049) 0.010 (0.006,0.015) 0.010 (0.001,0.019) 1.005 (1.001,1.010)
 SB mins/day in bouts ≥61 mins 0.011 (0.007,0.015) 0.029 (0.017,0.041) 0.006 (0.003,0.010) 0.003 (−0.004,0.010) 1.002 (0.998,1.005)
 Coefficients equal to each othera   p = 0.0002   p = 0.02   p = 0.04   p = 0.03   p = 0.03
Model 3; MVPA and SB mutually adjusted
 MVPA mins/day in bouts ≥1 mins −0.023 (−0.033,−0.012) −0.071 (−0.102,−0.040) −0.016 (−0.025,−0.007) −0.026 (−0.043,−0.008) 0.982 (0.973,0.992)
 SB mins/day in bouts 1–15 mins −0.012 (−0.021,−0.003) −0.029 (−0.055,−0.002) −0.006 (−0.014,0.002) −0.017 (−0.031,−0.002) 0.989 (0.982,0.996)
 SB mins/day in bouts 16–30 mins −0.001 (−0.009,0.007) 0.001 (−0.023,0.024) 0.002 (−0.005,0.008) 0.010 (−0.004,0.023) 0.996 (0.990,1.002)
 SB mins/day in bouts 31–60 mins −0.001 (−0.007,0.005) 0.009 (−0.010,0.028) 0.005 (−0.000,0.011) 0.002 (−0.009,0.012) 1.000 (0.995,1.005)
 SB mins/day in bouts ≥61 mins 0.003 (−0.002,0.008) 0.005 (−0.011,0.021) 0.001 (−0.003,0.006) −0.006 (−0.015,0.003) 0.996 (0.992,1.000)
Model 4; MVPA and LPA mutually adjusted
 MVPA mins/day in bouts ≥1 mins −0.017 (−0.025,−0.010) −0.064 (−0.087,−0.041) −0.015 (−0.022,−0.008) −0.017 (−0.029,−0.004) 0.988 (0.981,0.995)
 LPA mins/day in bouts 1–9 mins −0.012 (−0.019,−0.006) −0.025 (−0.044,−0.006) −0.007 (−0.013,−0.002) −0.017 (−0.028,−0.006) 0.998 (0.993,1.003)
 LPA mins/day in bouts ≥10 mins 0.007 (−0.008,0.021) −0.010 (−0.052,0.033) −0.003 (−0.015,0.009) 0.028 (0.004, 0.052) 1.002 (0.990,1.013)
  1. Coefficients adjusted for average daily accelerometer wear time, season of wear, region of residence, age, social class, living alone, tobacco and alcohol use
  2. BMI body mass index, WC waist circumference, FMI fat mass index, MS metabolic syndrome, MVPA moderate and vigorous physical activity, LPA light activity, SB sedentary behaviour. Coefficients in bold are statistically significant at 5 % level
  3. aWald test