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Table 5 PA components prediction

From: Patterns and correlates of physical activity in adult Norwegians: a forecasted evolution up to 2025 based on machine learning approach

  Frequency Duration Intensity
1985 2013 2025 1999 2013 2025 1999 2013 2025
Male < 25 1.02 1.27 1.44 ± 0.06 1.62 1.42 0.92 ± 0.04 1.63 1.65 2.45 ± 0.18
25–44 0.75 1.10 1.22 ± 0.04 1.31 1.27 1.21 ± 0.07 1.40 1.51 1.53 ± 0.14
45–64 0.76 1.10 1.36 ± 0.08 1.25 1.22 1.15 ± 0.02 0.98 1.12 1.19 ± 0.09
> 65 0.88 1.22 1.35 ± 0.08 1.13 1.19 1.03 ± 0.04 0.64 0.87 0.66 ± 0.08
Female < 25 0.89 1.30 2.07 ± 0.18 1.37 1.31 1.30 ± 0.08 1.46 1.60 1.62 ± 0.12
25–44 0.69 1.12 1.80 ± 0.17 1.18 1.11 1.03 ± 0.06 1.14 1.32 1.23 ± 0.08
45–64 0.90 1.26 1.66 ± 0.11 1.19 1.18 1.13 ± 0.04 0.77 1.03 0.84 ± 0.02
> 65 0.69 1.26 1.42 ± 0.09 1.00 1.08 1.13 ± 0.05 0.49 0.74 1.10 ± 0.05
  1. Frequency: Values lower than 1 refer to Frequency less than twice every 14 days; values from 1 to 2 refer to Frequency from once to twice a week; values higher than 2 refer to Frequency more than three times a week
  2. Duration: Values lower than 1 refer to duration less than 30 min; values from 1 to 2 refer to duration between 30 and 60 min; values higher than 2 refer to duration higher than 60 min
  3. Intensity: Values lower than 1 refer to intensity ‘I feel that my body becomes warm’; values from 1 to 2 refer to intensity from ‘I feel that my body becomes warm’ to ‘I feel I breathe harder and get sweaty’; values higher than 2 refer to intensity close to ‘maximum exertion’
  4. Mean of PA components class answers from values recorded until 2013 and mean ± standard deviation predicted upon 2025