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Table 2 Mean age (years), height (cms), body weight in kgs (SD) and mean three, five and ten percentage loads in kgs (SD). Significant gender differences in height and body weight within year levels are highlighted by italics.

From: Adolescent standing postural response to backpack loads: a randomised controlled experimental study

   Mean age years (SD) Mean height cms (SD) Mean body weight kgs (SD) Mean 3% body weight (SD) Mean 5% body weight (SD) Mean 10% body weight (SD)
Year 8 Boys 12.9 (0.5) 161.6 (8.1) 54 (11.4) 1.6 (0.3) 2.7 (0.6) 5.4 (1.1)
  Girls 12.8 (0.5) 161.5 (5.7) 50.6 (7.4) 1.5 (0.2) 2.5 (0.4) 5.1 (0.7)
Year 9 Boys 13.8 (0.4) 170.1 (8.4) 56.5 (8.0) 1.7 (0.2) 2.8 (0.4) 5.7 (0.8)
  Girls 13.8 (0.5) 161.7 (7.1) 53.9 (9.6) 1.6 (0.3) 2.7 (0.5) 5.4 (1.0)
Year 10 Boys 14.9 (0.6) 175.9 (5.8) 63.9 (16.0) 2.1 (0.5) 3.5 (0.8) 6.9 (1.7)
  Girls 14.8 (0.5) 163.7 (6.0) 58.2 (13.8) 1.7 (0.4) 2.9 (0.7) 5.8 (1.4)
Year 11 Boys 15.8 (0.6) 179.5 (6.9) 71.0 (8.8) 2.1 (0.3) 3.5 (0.4) 7.1 (0.9)
  Girls 15.8 (0.5) 166.3 (6.9) 59.3 (6.4) 1.8 (0.2) 3.0 (0.3) 5.9 (0.6)
Year 12 Boys 16.7 (0.5) 178.6 (6.1) 74.6 (19.6) 2.2 (0.6) 3.7 (1.0) 7.5 (2.0)
  Girls 16.8 (0.5) 165.0 (5.6) 61.9 (10.3) 1.9 (0.3) 3.1 (0.5) 6.2 (1.0)