Table 4 Correlations among BBS and TKS with demographic and clinic characteristics of patients with CKD

Age, years

-0.532

< 0.001*

0.148

0.345

Male/female, n

-0.081

0.604

-0.231

0.137

Weight, kg

-0.384

0.011*

-0.226

0.146

Height, cm

-0.054

0.730

-0.096

0.542

BMI, kg/m2

-0.352

0.021*

-0.212

0.171

Smoking (pack/year)

-0.103

0.509

-0.047

0.765

FEV₁ (%)

0.022

0.890

-0.087

0.580

FVC (%)

0.006

0.970

-0.077

0.623

FEV₁/FVC

0.196

0.209

-0.069

0.658

PEF (%)

0.053

0.735

-0.075

0.631

FEF_%25−75 (%)

0.107

0.497

-0.144

0.358

MIP (cmH₂O)

0.109

0.487

-0.224

0.149

MEP (cmH₂O)

-0.002

0.991

-0.438

0.003*

Quadriceps femoris, (Left), N

0.333

0.029*

-0.300

0.044*

Quadriceps femoris, (Right)

0.297

0.053

-0.122

0.436

%Quadriceps femoris, (ND)

0.418

0.005*

-0.133

0.395

Shoulder abductors (Left), N

0.144

0.358

-0.167

0.285

Shoulder abductors (Right), N

0.091

0.560

-0.073

0.640

%Shoulder abductors (ND)

0.199

0.200

0.050

0.751

Handgrip, (Left), P

0.196

0.207

-0.234

0.131

Handgrip, (Right), P

0.123

0.433

-0.251

0.105

MMRC dyspnea scale score, 0–4

0.181

0.245

-0.148

0.342

Modified Borg Scale score, 0–10 (Activity)

-0.124

0.430

-0.124

0.430

6-MWT distance, m

0.499

0.001*

-0.353

0.020*

TSK score (17–68)

-0.164

0.292

-

-

FRT (cm)

0.512

< 0.001*

-0.021

0.896

Spontaneous gait speed (m/s)

0.514

< 0.001*

-0.137

0.379

FSS score (0–63)

-0.189

0.226

0.446

0.003*

IPAQ (MET-min/week)

Total

0.093

0.552

-0.038

0.811

Walking

0.119

0.447

0.013

0.936

Moderate

0.042

0.791

-0.058

0.714

Vigorous

-0.051

0.746

-0.170

0.275

Sitting (min/day)

-0.284

0.065

0.074

0.638

BBS score (0–56)

-

-

-0.164

0.292