Table 1 Linear regression equation: partial regression coefficients, p values, root mean square errors (RMSE) and number of participants.Y= b0 + b1 x gender + b2 x weight + b3 x height + b4 x bmi + b5 X age; b0 (n/mm); b1 (n/mm)/gender, female= -1, male = +1; b2 (n/mm)/weight; b3 (n/mm)/height; b4 (n/mm)/bmi; b5 (n/mm)/age

Left

Hallux

-1.8669817

-0.10225389

-0.0042387

0.01183471

-0.0133015

0.02399122

0.48578

99

Heel

12.3844196

-0.12954317

0.08095755

*

-0.0619824

*

-0.1717064

*

0.00629858

1.09547

100

2^ndMTH

0°

6.46521444

-0.2177458

0.06521518

**

-0.0443825

*

-0.152051

**

0.02342962

0.802866

96

20°

8.58233676

-0.37727232

0.11675474

**

-0.0669571

**

-0.2698104

**

0.05478136

0.989617

100

40°

12.5772582

-0.15231289

0.12385643

**

-0.0855753

*

-0.3131397

**

0.06469774

1.479414

98

Right

Hallux

0.66899629

0.087890718

-0.0165869

0.00670808

0.03648811

-0.0093199

0.409141

99

Heel

17.6691906

-0.54480677

*

0.14765975

**

-0.0882361

**

-0.3480107

**

-0.0132202

1.147579

100

2^ndMTH

0°

4.48332802

-0.17447007

0.04778213

*

-0.0271027

-0.1134243

*

0.01582428

0.821476

96

20°

14.2540307

-0.34137115

0.12512617

**

-0.0797136

**

-0.2852428

**

-0.0020648

1.126962

100

40°

16.389124

-0.20310698

0.13467015

**

-0.0842629

*

-0.2962142

**

-0.0117724

1.614592

98