Comparison of body composition measurements across phase of the menstrual cycle: hydrostatic weighing, air-displacement plethysmography vs three compartment model

Graduation Date

2015

Document Type

Thesis

Program

Other

Program

Thesis (M.S.)--Humboldt State University, Kinesiology: Exercise Science, 2015

Committee Chair Name

Rock Braithwaite

Committee Chair Affiliation

HSU Faculty or Staff

Keywords

Three-compartment model, Humboldt State University -- Theses -- Kinesiology, Hydrostatic weighing, Air-displacement plethysmography, Menstrual cycle, Body composition

Abstract

Purpose: The purpose of this study was compare %BF values measured by BODPOD, HW to the Siri 3-Compartment Model equation, and to determine if the fluctuations of body weight as a result of fluid retention during the luteal phase of the menstrual cycle will affect the results of body composition measurements. Methods: Twenty subjects, 18-26 yrs old, participated in this study. There were 9 female, no birth control (FNBC), 6 female, birth control (FBC), and 5 Control (male) subjects. Each subject was assessed three times over the course of one month or one menstrual cycle. Four values of %BF were obtained, BODPOD, HW, Siri3CBODPOD, and Siri3CHW. Results: Three by three Repeated Measures ANOVA revealed significance difference (p0.05) between HW and Siri3CBODPOD for FNBC and FBC (p0.000) and the Control (p=0.001). There was significance between HW and Siri3CHW for FNBC (p0.000), FBC (p=0.006), and Control (p=0.001). There was no significance between times of assessment for all groups. Significant changes between TBW and weight were not detected. Conclusion: The "sex bias" still needs further investigation. Further research needs to investigate changes in TBW and weight across the menstrual cycle, and if potential changes influence %BF.

https://scholarworks.calstate.edu/concern/theses/8w32r770k

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