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Table 2 Correlation between body composition, hydration, physical performance and bioelectrical variables in men without/with sarcopenia

From: Association between classic and specific bioimpedance vector analysis and sarcopenia in older adults: a cross-sectional study

 

BIA

Classic BIVA

Specific BIVA

PA

R

Xc

Z

R/H

Xc/H

Z/H

Rsp

Xcsp

Zsp

Men without sarcopenia

FM (kg)

− 0.459*

0.074

− 0.431*

− 0.490*

0.055

− 0.463*

0.745**

0.490*

0.747**

0.255

FM%

− 0.298

0.094

− 0.287

− 0.208

0.133

− 0.199

0.576**

0.372

0.576**

0.184

BMC (kg)

− 0.473*

− 0.202

− 0.460*

− 0.640**

− 0.279

− 0.628**

0.290

0.138

0.290

0.049

BMC%

− 0.032

− 0.317

− 0.055

− 0.056

− 0.319

− 0.080

− 0.447*

− 0.389

− 0.450*

− 0.259

ALST (kg)

− 0.321

0.041

− 0.310

− 0.554**

− 0.072

− 0.543**

0.384

0.332

0.390

0.230

ALST%

0.306

0.031

0.273

0.198

− 0.017

0.167

− 0.474*

− 0.217

− 0.471*

− 0.055

SMI (kg/m2)

− 0.565**

0.105

− 0.564**

− 0.680**

0.048

− 0.681**

0.317

0.469*

0.327

0.409*

TBW (l)

− 0.693**

− 0.218

− 0.647*

− 0.849**

− 0.357

− 0.813**

0.323

0.340

0.327

0.304

TBW%

0.072

− 0.170

0.028

0.164

− 0.109

0.122

− 0.922**

− 0.579*

− 0.920**

− 0,190

6MWT (min)

− 0.060

0.430*

− 0.121

− 0.209

0.351

− 0.270

0.141

0.477*

0.154

0.472*

Hand grip Strenght (kg)

− 0.012

0.283

− 0.021

− 0.191

0.190

− 0.199

− 0.131

0.217

− 0.122

0.304

Men with sarcopenia

FM (kg)

0.410

0.273

0.407

0.027

0.068

0.027

0.924

0.796

0.923

0.199

FM%

0.548

0.417

0.545

0.186

0.224

0.186

0.960*

0.864

0.959*

0,347

BMC (kg)

− 0.195

− 0.226

− 0.196

− 0.406

− 0.349

− 0.405

0.318

0.240

0.317

− 0.253

BMC%

− 0.494

− 0.367

− 0.492

− 0.232

− 0.236

− 0.232

− 0.717

− 0.620

− 0.716

− 0.308

ALST (kg)

− 0.229

− 0.362

− 0.232

− 0.588

− 0.549

− 0.588

0.522

0.300

0.519

− 0.429

ALST%

− 0.675

− 0.559

− 0.673

− 0.338

− 0.377

− 0.339

− 0.990*

− 0.935

− 0.990*

− 0.495

SMI (kg/m2)

0.128

0.018

0.125

− 0.240

− 0.183

− 0.240

0.762

0.627

0.761

− 0.046

TBW (l)

− 0.361

− 0.528

− 0.365

− 0.674

− 0.670

− 0.675

0.629

0.293

0.626

− 0.596

TBW%

− 0.462

− 0.290

− 0.458

− 0.109

− 0.116

− 0.109

− 0.999*

− 0.912

− 0.999*

− 0.209

6MWT (min)

− 0.364

− 0.384

− 0.365

− 0.534

− 0.484

− 0.533

0.147

0.058

0.146

− 0.404

Hand grip Strenght (kg)

− 0.813

− 0.893

− 0.815

− 0.960*

− 0.959*

− 0.960*

− 0.208

− 0.447

− 0.211

− 0.924

  1. crf: circumference; BMI: body mass index; R: resistance; Xc: reactance; Z: vector length; PA: phase angle; R/H: resistance standardized for height; Xc/H: reactance standardized for height; Z/H: vector length standardized for height; Rsp: resistance standardized for height and transverse areas; Xcsp: reactance standardized for height and transverse areas; Zsp: vector length standardized for height and transverse areas; ALST: Appendicular lean soft tissue; FM: fat mass; BMC: bone mineral content; TBW: total body water; SMI: Skeletal muscle mass index; %: relative values (ratio) to body weight; 6MWT: 6-min walk test; r R-Xc: correlation between R and Xc; r R/H-Xc/H: correlation between R/H and Xc/H; r Rsp-Xcsp: correlation between Rsp and Xcsp
  2. *p < 0.05; **p < 0.001