Skip to main content

Table 3 Differences in biomechanical variables of interest between footwear and barefoot conditions. All variables are reported as mean ± standard deviation with the P value for between shoes and barefoot comparisons

From: Differences and mechanisms underpinning a change in the knee flexion moment while running in stability and neutral footwear among young females

Variable

Barefoot

Stability

Neutral

P value barefoot v high-support

P value barefoot v low-support

P value high-support v low-support

Peak KFM (Nm/kg)

2.24 ± 0.41

2.67 ± 0.41a

2.62 ± 0.39a

< 0.001

< 0.001

0.06

Running velocity (m/s)

3.12 ± 0.20

3.12 ± 0.21

3.14 ± 0.21

0.76

0.07

0.41

Stance time (s)

0.23 ± 0.03

0.25 ± 0.02a

0.25 ± 0.02a

< 0.001

< 0.001

0.08

Sagittal plane knee-GRF lever arm (mm)c

103.75 ± 18.05

119.50 ± 18.04ab

117.29 ± 17.05a

< 0.001

< 0.001

0.04

Sagittal plane resultant GRF magnitude (BW)c

2.48 ± 0.45

2.55 ± 0.44a

2.56 ± 0.44a

< 0.001

< 0.001

0.27

Hip flexion angle (°)c

37.64 ± 7.60

40.45 ± 8.04a

40.04 ± 7.58a

< 0.001

< 0.001

0.43

Knee flexion angle (°)c

46.96 ± 4.52

48.99 ± 4.84a

49.36 ± 4.10a

< 0.001

< 0.001

0.32

Knee flexion at initial contact (°)

19.11 ± 4.30

16.16 ± 4.40ab

17.64 ± 5.83a

< 0.001

0.02

0.04

Knee flexion excursion (°)

32.40 ± 4.79

36.21 ± 4.22a

36.31 ± 4.32a

< 0.001

< 0.001

0.77

Ankle dorsiflexion angle (°)c

19.01 ± 3.81

20.17 ± 3.08a

19.75 ± 3.37

0.01

0.12

0.12

  1. BW bodyweight, KFM external knee flexion moment
  2. asignificantly different to barefoot
  3. bsignificantly different to neutral
  4. cat time of peak KFM