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Table 7 Comparison between the present study and studies of Bohannon[3] and Andrews[9] for male

From: Reference values for isometric muscle force among workers for the Netherlands: a comparison of reference values

Male

Dominant

Non dominant

Muscle force

Douma

Bohannon

Andrews

Douma

Bohannon

Andrews

Mean (95% CI)

Mean

Mean

Mean (95% CI)

Mean

Mean

Elbow flexion

      

  Age group

      

  20-29

281 (267-295)

285

-

261 (247-276)

279

-

  30-39

273 (259-287)

269

-

266 (252-281)

281

-

  40-49

271 (258-286)

269

-

261 (249-274)

270

-

  50-59

259 (246-272)

287

292

245 (232-257)

268

272

Elbow extension

      

  Age group

      

  20-29

186 (175-197)

244

-

182 (171-194)

245

-

  30-39

185 (172-194)

214

-

179 (167-192)

231

-

  40-49

185 (174-196)

210

-

179 (169-190)

214

-

  50-59

181 (171-190)

197

188

173 (164-182)

186

178

Knee extension

      

  Age group

      

  20-29

379 (348-409)

575

-

371 (339-404)

579

-

  30-39

351 (323-378)

573

-

341 (312-369)

572

-

  40-49

368 (341-395)

583

-

341 (315-366)

589

-

  50-59

337 (310-363)

471

448

335 (308-362)

468

-439

Shoulder abduction

      

  Age group

      

  20-29

172 (144-200)

258

-

173 (152-193)

246

-

  30-39

181 (165-196)

249

-

176 (159-192)

237

-

  40-49

173 (158-188)

246

-

177 (163-191)

244

-

  50-59

178 (165-191)

240

238

177 (163-191)

223

-222

  1. Bold printed numbers are values outside the 95%CI of this study.
  2. Age groups are given in decades in years, Muscle force is given in Newtons, LCL = lower control limit, UCL upper control limit, – not available.