Assessment of urinary protein composition in response to consecutive days of wildland firefighting

Nobuo Yasuda, Brent C. Ruby

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The purpose of this study was to examine the pattern of urinary protein excretion induced by 3 consecutive days of wildland firefighting. Eighteen male active-duty military personnel served as the participants. All testing on the 3 consecutive days was conducted at a Northwestern USA fire camp. All participants consumed military-based foods containing 2620–2864 kcal/day. The work activity was evaluated with an accelerometer in association with body weight and hydration markers over the experimental period. Urinary samples were collected pre and post workshift on days 1 and 3 to assess glomerular and tubular protein excretion (total protein, albumin, β2-microglobulin, N-acetyl-β-d-glucosaminidase and creatinine). The urinary levels of glomerular and tubular protein were not significantly different. The main findings of the present study indicate that similar alterations of urinary protein composition can be observed over consecutive days of wildland firefighting, which appears to be dependent on intensity rather than total work output.

Original languageEnglish
Pages (from-to)27-34
Number of pages8
JournalInternational Journal of Occupational Safety and Ergonomics
Issue number1
StatePublished - Jan 2 2019


  • energy balance
  • heat exposure
  • hydration
  • labor work
  • renal function
  • wildland firefighting


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