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Table 2 Tracking of daily sedentary behavior from age 7 years to 15 years (Spearman’s coefficient)

From: Development of sedentary behavior across childhood and adolescence: longitudinal analysis of the Gateshead Millennium Study

Variable 7–9y (n = 402) 7–12y (n = 326) 7–15y (n = 240) 9–12y (n = 353) 9–15y (n = 263) 12–15y (n = 262)
Sedentary time (min ) 0.432 0.356 0.277 0.435 0.344 0.459
Sedentary time (%/d) 0.559 0.427 0.428 0.469 0.420 0.503
Duration break (min) 0.565 0.277 0.214 0.288 0.204 0.485
Breaks per hour > 1 min 0.447 0.371 0.362 0.389 0.347 0.488
Bouts per hour of sedentary time 0.310 0.262 0.300 0.385 0.313 0.485
Bouts lasting 1–4 min 0.290 0.159 0.006 0.346 0.117 0.410
Bouts lasting 5–9 min 0.457 0.370 0.089 0.418 0.087 0.313
Bouts lasting 10–14 min 0.443 0.400 0.311 0.399 0.236 0.405
Bouts lasting 15–29 min 0.376 0.304 0.274 0.381 0.325 0.517
Bouts lasting +30 min 0.126 0.033 0.164 0.222 0.061 0.325
Sedentary bout length at 50th percentile of sedentary time (min) 0.414 0.392 0.371 0.411 0.332 0.455
  1. Bouts were defined as minimum period of sedentary time without allowing any interruption