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- Hickenbottom, S.J.; Follett, J.R.; Lin, Y.; Dueker, S.R.; Burri, B.J.; Neidlinger, T.R.; Clifford, A.J.
- American journal of clinical nutrition 2002 v.75 no.5 pp. 900
- beta-carotene; retinyl acetate; nutrition physiology; metabolism; vitamin A; isotope labeling; deuterium; blood plasma; men
- ... Background: The vitamin A activity of β-carotene is variable and surprisingly low in women. The reasons for this are not well understood. The vitamin A activity of β-carotene in men is still uncertain. Contributions of dietary factors compared with individual traits are largely unknown. Objective: Our objective was to measure the intrinsic variability in the vitamin A activity of β-carotene among ...
- Haub, Mark D.; Wells, Amanda M.; Tarnopolsky, Mark A.; Campbell, Wayne W.
- American journal of clinical nutrition 2002 v.76 no.3 pp. 511-517
- beef; body composition; creatine; diet; men; muscle strength; phosphocreatine; protein intake; quality of life; resting energy expenditure; skeletal muscle; textured vegetable protein
- ... Background: Aging is associated with reductions in muscle mass and strength, but nutrition and exercise interventions can delay this progression and enhance the quality of life. Objective: We examined whether the predominant source of protein consumed by older men influenced measures of muscle size and strength, body composition, resting energy expenditure, and skeletal muscle creatine concentrati ...
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