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Table 2 Pearson correlations between body weight, gait kinematics and walking energy expenditure

From: Relationship between gait kinematics and walking energy expenditure during pregnancy in South African women

  COGV (m) COGML (m) GR O2 (ml/kg/min) NR O2 (ml/kg/min) NC O2 (ml/kg/m) Mass (kg) Mgain (kg)
Mass (kg) −0.18 0.24 −0.15 −0.19 − 0.11
Mgain (kg) −0.01 0.50*** −0.04 − 0.08 −0.02 0.43**
S (m/s) 0.75*** −0.18 0.30* 0.70*** 0.53*** −0.43** −0.27
Stride lengtha 0.32* −0.39** −0.18 0.09 −0.01 − 0.01 −0.29
Step widtha 0.09 −0.02 0.20 0.19 0.22 0.05 0.38**
DS time (s) −0.17 0.00 0.23 −0.23 −0.18 0.15 0.34*
COGV (m) 0.11 0.45** 0.30* −0.18 − 0.01
COGML (m) −0.03 − 0.10 −0.12 − 0.09 0.24 0.50***
REE (kcal/day/kg) 0.04 0.03 −0.04 −0.85*** − 0.31*
  1. *p ≤ 0.05; ** ≤ 0.01; *** ≤ 0.001; Mgain = mass relative to pre-pregnancy mass; S = walking speed; DS = double support; COGv = vertical excursion of the centre of gravity; COGML = medio-lateral centre of gravity displacement; anormalized for leg length; GR O2 = gross O2 rate; NR O2 = net O2 rate; NC O2 = net O2 cost; REE = resting energy expenditure