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Table 2 Descriptive statistics for the repeated measurements for ultrasound morphology of selected foot muscles and plantar fascia

From: Intra-assessor reliability and measurement error of ultrasound measures for foot muscle morphology in older adults using a tablet-based ultrasound machine

  

Older

    

Younger

         
  

Tablet-based

    

Tablet-based

    

Mainframe

    
  

n

Occ 1

 

Occ 2

 

n

Occ 1

 

Occ 2

 

n

Occ 1

 

Occ 2

 
   

Mean

SD

Mean

SD

 

Mean

SD

Mean

SD

 

Mean

SD

Mean

SD

AbH

CSA

18

198

(52)

201

(50)

10

194

(65)

189

(65)

10

192

(65)

191

(71)

 

Th

18

10.3

(2.0)

10.3

(2.0)

10

10.9

(2.3)

10.8

(2.4)

10

10.9

(2.3)

10.6

(2.2)

FDB

CSA

12

248.5

(66.1)

247.8

(80.1)

10

211

(50)

209

(51)

10

210

(56)

209

(52)

 

Th

18

10.4

(2.0)

10.2

(2.2)

10

10.9

(2.5)

10.4

(1.9)

10

11.0

(2.6)

10.4

(2.0)

QP

CSA

18

176

(35)

177

(34)

0

–

–

–

–

0

–

–

–

–

 

Th

12

8.8

(1.3)

9.1

(1.4)

10

10.0

(1.0)

9.8

(1.1)

10

9.9

(1.0)

9.9

(1.0)

FHB

Th

18

13.6

(1.7)

13.7

(1.6)

10

14.4

(2.3)

14.1

(1.9)

10*

14.9

(2.1)

15.3

(1.7)

AbDM

Th

12

8.9

(1.4)

9.4

(1.5)

10

11.1

(1.8)

11.1

(2.2)

10

11.0

(2.1)

11.3

(2.1)

PFprox

Th

12

3.9

(0.8)

4.0

(1.0)

10

3.5

(0.6)

3.5

(0.7)

10*

3.3

(0.6)

3.2

(0.7)

PFmid

Th

18

2.3

(0.4)

2.4

(0.3)

10

2.1

(0.4)

2.2

(0.3)

10*

2.1

(0.4)

2.0

(0.4)

PFdist

Th

12

1.3

(0.2)

1.4

(0.2)

10

1.2

(0.2)

1.2

(0.2)

10

1.2

(0.2)

1.1

(0.2)

TAlong

Th

18

25.2

(3.6)

25.3

(3.2)

10

22.4

(3.0)

22.7

(1.6)

10

22.6

(2.9)

22

(1.7)

TAtrans

Th

18

24.4

(3.2)

24.6

(3.2)

10

22.0

(2.9)

21.8

(1.2)

10

22.4

(2.7)

21.7

(1.4)

FDL

CSA

18

191

(47)

197

(55)

10

154

(64)

138

(58)

10

146

(60)

142

(60)

PERlong

Th

18

14.1

(2.2)

14.5

(2.1)

10

13.6

(1.9)

13.2

(2.3)

10

14.3

(2.2)

13.6

(2.7)

PERtrans

Th

18

13.4

(2.3)

14.2

(2.2)

10

13.9

(2.0)

13.5

(2.6)

10

13.6

(2.3)

13.1

(2.8)

FHLlong

Th

12

25.1

(3.5)

25.3

(3.1)

8

24.4

(2.6)

24.2

(2.6)

8

23.8

(3.6)

24.6

(3.4)

FHLtrans

Th

7

24.8

(4.5)

24.8

(4.1)

10

22.7

(3.5)

22.4

(3.2)

10

22.7

(3.8)

22.5

(4.0)

  1. Occ: occasion, CSA: cross-sectional area, th: thickness, AbH: m. abductor hallucis, FDB: m. flexor digitorum brevis, QP: m. quadratus plantae, FHB: m. flexor hallucis brevis, AbDM: m. abductor digiti minimi, PF: plantar fascia, prox: proximal, mid: middle, dist: distal, TA: m. tibialis anterior, long: longitudinal, trans: transverse, FDL: m. flexor digitorum longus, PER: m. musculus peroneus, FHL: m. flexor hallucis longus. Values are presented in mm (thickness) and mm2 (cross-sectional area). * indicates a statistical difference of ultrasound measures across machines: p < 0.05