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Table 3 6-min walk test, gait parameters and maximal muscle strength

From: Feasibility and safety of high-intensity interval training for the rehabilitation of geriatric inpatients (HIITERGY) a pilot randomized study

mITT population (n = 69)

First visit

Last visit

Mean difference$ (95% CI)

Pvalue*

6-min walk test

(N = 51)

(N = 38)

(N = 54)

 

Distance

213 ± 93

257 ± 79

23 (6 to 39)

0.008

Predicted (%)

59 ± 39

76 ± 38

8 (2 to 14)

0.007

Spatio-temporal gait parameters

Usual pace

(N = 56)

(N = 38)

(N = 62)

 

  Speed (cm/sec)

56 ± 22

62 ± 20

4.6 (−0.8 to 10.0)

0.093

  Mean step length (cm)

37 ± 10

39 ± 10

2.2 (0.0 to 4.4)

0.048

  Mean stride length (cm)

74 ± 21

77 ± 20

3.6 (−1.3 to 8.5)

0.142

  Mean support base (cm)

13 ± 4

14 ± 4

− 0.1 (− 1.1 to 0.9)

0.801

  Mean double support time (msec)

5.8 ± 2.3

5.1 ± 1.5

− 0.5 (− 0.9 to 0.0)

0.053

Maximum pace

(N = 57)

(N = 39)

(N = 61)

 

  Speed (cm/sec)

77 ± 31

85 ± 29

8.5 (3.6 to 13.4)

0.001

  Mean step length (cm)

42 ± 13

45 ± 13

2.9 (0.7 to 5.1)

0.011

  Mean stride length (cm)

85 ± 26

91 ± 26

6.0 (1.6 to 10.3)

0.008

  Mean support base (cm)

13 ± 4

13 ± 4

−0.7 (−1.6 to 0.2)

0.105

  Mean double support time (msec)

4.3 ± 2.1

3.8 ± 1.4

−0.3 (− 0.6 to − 0.1)

0.013

Gait variability parameters

Usual pace

(N = 55)

(N = 38)

(N = 62)

 

  CV step length

13.2 ± 6.8

12.2 ± 6.1

−0.7 (−3.0 to 1.5)

0.503

  CV step time

8.8 ± 7.4

7.6 ± 2.9

−0.4 (−1.7 to 0.8)

0.502

  CV stride length

7.7 ± 4.0

7.5 ± 3.8

− 0.1 (− 1.7 to 1.4)

0.846

  CV stride time

5.7 ± 5.4

4.7 ± 2.0

−0.4 (− 1.3 to 0.5)

0.361

Maximum pace

(N = 57)

(N = 39)

(N = 61)

 

  CV step length

11.7 ± 7.5

11.6 ± 10.1

0.2 (−3.2 to 3.5)

0.914

  CV step time

8.5 ± 8.6

6.7 ± 2.9

−0.3 (−1.2 to 0.7)

0.590

  CV stride length

6.7 ± 3.2

7.1 ± 5.5

0.4 (−1.2 to 2.0)

0.613

  CV stride time

4.7 ± 3.7

5.0 ± 4.9

0.5 (−1.0 to 2.0)

0.504

Maximal muscle strength (kPa)

(N = 46)

(N = 35)

(N = 50)

 

 Handgrip

33.3 ± 15

29.7 ± 18.7

−0.2 (−2.9 to 2.6)

0.895

 Knee flexion

12.5 ± 3.6

12.9 ± 4.2

0.4 (−1.0 to 1.8)

0.564

 Knee extension

14.8 ± 4.8

15.8 ± 5.0

0.8 (−1.1 to 2.8)

0.392

 Ankle dorsiflexion

19.2 ± 6.7

20.7 ± 7.4

1.4 (−1.1 to 3.8)

0.254

 Ankle plantar flexion

18.7 ± 8.0

18.2 ± 6.6

−0.7 (−3.3 to 1.8)

0.553

  1. $Mean difference (last visit – first visit) estimates and pvalues from linear mixed-effects models
  2. CV Coefficient of variation (dimensionless)
  3. Maximal muscle strength among both sides (kPa) assessed with a Vigorimeter® dynamometer