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Full-Text Articles in Fluids and Secretions
Time Of Urine Sampling May Influence The Association Between Urine Specific Gravity And Body Composition, Patrick B. Wilson, Brian K. Ferguson, Ian P. Winter
Time Of Urine Sampling May Influence The Association Between Urine Specific Gravity And Body Composition, Patrick B. Wilson, Brian K. Ferguson, Ian P. Winter
Exercise Science Faculty Publications
Urine specific gravity (USG) is frequently utilized in sports practice and research to assess hydration status. Prior research suggests that individuals with large amounts of fat-free mass (FFM) and muscle have elevated USG, but little is known about whether the time of collection (first-morning vs. spot sampling) and various nutritional factors influence these relationships. This cross-sectional, observational study assessed fasted first-morning (n = 55) and non-fasted spot USG (n = 51) samples in adults and evaluated relationships of USG with body composition and nutrition intake. The InBody 770 was used to estimate FFM, skeletal muscle mass (SMM), and total body …
Differences In Urine Creatinine And Osmolality Between Black And White Americans After Accounting For Age, Moisture Intake, Urine Volume, And Socioeconomic Status, Patrick B. Wilson, Ian P. Winter, Josie Burdin
Differences In Urine Creatinine And Osmolality Between Black And White Americans After Accounting For Age, Moisture Intake, Urine Volume, And Socioeconomic Status, Patrick B. Wilson, Ian P. Winter, Josie Burdin
Exercise Science Faculty Publications
Urine osmolality is used throughout research to determine hydration levels. Prior studies have found black individuals to have elevated urine creatinine and osmolality, but it remains unclear which factors explain these findings. This cross-sectional, observational study sought to understand the relationship of self-reported race to urine creatinine and urine osmolality after accounting for age, socioeconomic status, and fluid intake. Data from 1,386 participants of the 2009–2012 National Health and Nutrition Examination Survey were utilized. Age, poverty-to-income ratio (PIR), urine flow rate (UFR), fluid intake, estimated lean body mass (LBM), urine creatinine, and urine osmolality were measured. In a sex-specific manner, …