Comparison of Hydrostatic Weighing at Residual Volume and Total Lung Capacity in Boys PDF Download
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Author: Mary J. DeLisio
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Category :
Languages : en
Pages :
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Author: Mary J. DeLisio
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Category :
Languages : en
Pages :
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Author: Kenny Owens
Publisher:
ISBN:
Category : Body weight
Languages : en
Pages : 132
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Author: Robert George Morgan
Publisher:
ISBN:
Category : Body weight
Languages : en
Pages : 108
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Author: Kwai Ming Wa
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Category : Adipose tissues
Languages : en
Pages : 278
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Abstract: The purpose of this study was to compare the without head submersion (HWNHS) and total lung capacity (HWTLC) hydrostatic weighing techniques to the criterion measure of hydrostatic weighing at residual volume (HWRV). Subjects were 54 healthy males. In an attempt to improve the accuracy of HWNHS, regression analysis was used to predict actual head volume from spherical head volume (R2 = .27, standard error of estimate (SEE) = 42 6 mL). Predicted head volume was then added to total body volume (TBV) determined by HWNHS. TBV for all three techniques was corrected by subtracting the appropriate lung and gastro-intestinal volumes. Mean body density (Db) was 1.065 g/mL, 1.072 g/mL, and 1.072 g/mL for HWRV, HWTLC, and HWNHS, respectively. Mean percent body fat (% fat) was 15.10%, 11.85%, and 11.89% for HWRV, HWTLC, and HWNHS, respectively. Significant differences in mean Db and % fat were observed, with HWTLC and HWNHS overestimating Db and underestimating % fat from HWRV. Although correlations between the three hydrostatic weighing techniques were greater than .85, the SEEs for predicting % fat measured by HWRV were 3.49% and 3.25% for HWTLC and HWNHS, respectively.
Author: Thomas D. Ballard
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Author: Dean Witherspoon
Publisher:
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Category : Human body
Languages : en
Pages : 132
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This study compared body density (BD) and percent body fat (%BF) arrived at by using four different lung volumes in the hydrostatic weighing (HW) procedure. The four lung volumes were residual volume as measured in air (RV-dry), residual volume as measured immersed in water (RV-wet), functional residual capacity, as measured immersed (FRC), and total lung capacity as measured immersed (TLC). The closed circuit oxygen dilution technique was used to measure all lung volumes.
Author: Glenn Sheffield
Publisher:
ISBN:
Category : Body composition
Languages : en
Pages : 124
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Author: Joann M. McGarty
Publisher:
ISBN:
Category : Body composition
Languages : en
Pages : 130
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This study compared hydrostatic weighing (HW) at residual volume (RV), total lung capacity (TLC)-dry and TLC-wet in the determination of body density (00) and percent body fat (%BF). Considering the comfort of the submerged Ss, it was the dim of this study to establish a HW method which was reliable. Student volunteers included 44 competitive swimmers (25 females; 19 males) and 55 noncompetitive swimmers (31 females; 24 males) ages 17-34. Residual volume was determined by the open circuit nitrogen washout technique. Dry and wet measurements of forced vital capacity (FVC) and TLC were obtained from all Ss to determine appropriate measurement in application to BD and %BF calculations . All Ss underwent HW at RV and TLC. Three BD and %BF were calculated for Ss by applying lung measurements of RV, TLC-dry and TLC-wet. Ss noted method preference; at RV, TLC or neither. A 3 way ANOVA with repeated measures followed by a Scheffe' Post Hoc Test was used to analyze the following variables: FVC-dry, FVC-wet, TLC-dry, TLC-wet, BD and %BF by HW at RV, TLC-dry and TLC-wet. A Chi Square analyzed Ss HW method preference. There was a sig (p .01) reduction in FVCwet and TLC-wet when compared to those measurements dry in Ss combined. There were sig (p.01) diff between HW at RV vs HW at TLC-dry and HW at RV vs HW at TLC-wet ('F %BF differences = 3.64% and 1.77%, respectively) in Ss combined. %BF with HW at RV at TLC-wet at TLC-dry. A1 1 subgroups and Ss combined preferred HW at TLC (p
Author: Michael N. Sawka
Publisher:
ISBN:
Category : Anthropometry
Languages : en
Pages : 198
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Author: Pat Lundvall
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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