Premium
Large chronic protein intake does not affect markers of renal damage in healthy resistance trainers
Author(s) -
Lowery Lonnie Michael,
Daugherty Allison,
Miller Brian,
Bernstein Eric,
Smurawa Troy
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.983.25
Subject(s) - urine , exertion , resistance training , urinary system , kidney , zoology , medicine , chemistry , endocrinology , biology
It is controversial whether high protein diets induce renal damage. We hypothesized that urinary microalbumin concentrations (a marker of renal damage) would not be significantly elevated in a group of protein‐seeking male resistance trainers (PRO, n=12) compared to non‐protein‐seeking counterparts (NPRO, n=10). The diets of male resistance trainers (healthy, ≥3 y of weight training) were analyzed using seven‐day food diaries. Compared to NPRO, PRO consumed a larger amount of absolute and relative protein for a self reported mean duration of nine years (250.2 ± 87 g/day [2.5 ± 0.8 g/kg] vs. 104.5 ± 23g/day [1.3 ± 0.3 g/kg]). Fasting urine samples were taken at 0800 h, while 12‐hour collections extended through 2000 h. Microalbumin values did not differ (p>0.05) and were normal in the fasting samples (PRO 9.7 ± 10 mg/L vs. NPRO 12.8 ± 18.1 mg/L) and in the 12H collection (PRO 6.2 ± 3.2 mg/L vs. NPRO 15.0 ± 19.6 mg/L). Per‐kg comparisons were also non‐significant. The groups did not differ in training intensity (perceived exertion) or volume (kcal expended weekly). Within the limitations of this design, we conclude that a long‐term ample protein diet did not result in renal damage. Supported by The University of Akron Research Office, Akron, OH.