TABLE 2

Free-living walking characteristics for obese (n = 12) and lean (n = 10) subjects and the total group (n = 22)

Walking bouts (n/day)Time engaged in walking (minutes/day)Average distance of a walking bout (miles)Free-living walking velocity (mph)
Baseline
    Lean46 ± 8448 ± 1110.22 ± 0.041.19 ± 0.21
    Obese47 ± 5339 ± 74*0.14 ± 0.041.10 ± 0.20
    Total47 ± 6389 ± 1060.18 ± 0.061.14 ± 0.20
Overfed
    Lean48 ± 11459 ± 1190.19 ± 0.061.09 ± 0.28
    Obese47 ± 9334 ± 79*0.11 ± 0.03§0.96 ± 0.15
    Total47 ± 10391 ± 1160.15 ± 0.06**1.02 ± 0.20**
Change with overfeeding
    Lean1.6 ± 511 ± 43−0.03 ± 0.04−0.10 ± 0.14
    Obese−0.3 ± 7−5 ± 51−0.03 ± 0.05−0.14 ± 0.15
    Total0.6 ± 62 ± 47−0.03 ± 0.04−0.12 ± 0.14
  • Data are means ± SD. Data were gathered every 0.5 s for 10 days continuously during weight-maintenance feeding and after 8 weeks of overfeeding by 1,000 kcal/day using validated posture and motion sensors worn under clothing (7). Statistical differences are indicated: obese subjects compared with lean,

  • * P = 0.01,

  • P = 0.002,

  • § P = 0.001; overfed compared with baseline,

  • P = 0.05,

  • P < 0.005,

  • P = 0.01,

  • ** P < 0.001.