Evaluation of Air Displacement for Assessing Body Composition of Collegiate Wrestlers

Alan C. Utter, Fredric L. Goss, Pamela Swan, Gregory S. Harris, Robert J. Robertson, Gregory A. Trone

    Research output: Contribution to journalArticle

    50 Citations (Scopus)

    Abstract

    Purpose: To evaluate the accuracy of air displacement plethysmography (ADP) by using the BOD POD® in comparison with hydrostatic weighing (HW) in a collegiate wrestling population in hydrated and acutely dehydrated states. Methods: Body composition was determined by ADP, HW, and three-site skinfolds (SK) in 66 NCAA Division I collegiate wrestlers before and after acute dehydration (2.6% reduction in body mass). For all methods, body density (Db) was converted to percent body fat (%BF) by using the Brozek equation for Euro-Americans and the Schutte equation for African-Americans. Results: There were no significant differences between ADP and HW for Db, %BF, and fat-free mass (FFM) in either the hydrated or dehydrated states. The standard errors of the estimate for %BF estimated from ADP with HW as the reference method were 2.12% (hydrated) and 2.16% (dehydrated); prediction errors were 2.35% (hydrated) and 2.49% (dehydrated). Bland-Altman plots of Db and %BF showed no systematic bias, and 64 out 66 subjects fell within the 95% limits of agreement (mean difference ± 2 SD) for both variables. For SK, %BF was significantly higher than HW in both the hydrated and dehydrated state. All methods (ADP, HW, and SK) showed a significant decrease in FFM from the hydrated to the dehydrated state. Conclusions: This study demonstrates that the BOD POD® air displacement method provides similar estimates of Db, %BF, and FFM when compared with HW in a heterogeneous collegiate wrestling population during hydrated and acutely dehydrated states. Pretest guidelines to ensure normal hydration status before body composition assessment using any method must be followed to minimize measurement error in %BF.

    Original languageEnglish (US)
    Pages (from-to)500-505
    Number of pages6
    JournalMedicine and Science in Sports and Exercise
    Volume35
    Issue number3
    DOIs
    StatePublished - Mar 1 2003

    Fingerprint

    Body Composition
    Plethysmography
    Air
    Wrestling
    Fats
    Dehydration
    African Americans
    Population
    Adipose Tissue
    Guidelines

    Keywords

    • Bod pod
    • Body fat
    • Dehydration
    • Wrestling

    ASJC Scopus subject areas

    • Public Health, Environmental and Occupational Health
    • Physical Therapy, Sports Therapy and Rehabilitation
    • Orthopedics and Sports Medicine

    Cite this

    Evaluation of Air Displacement for Assessing Body Composition of Collegiate Wrestlers. / Utter, Alan C.; Goss, Fredric L.; Swan, Pamela; Harris, Gregory S.; Robertson, Robert J.; Trone, Gregory A.

    In: Medicine and Science in Sports and Exercise, Vol. 35, No. 3, 01.03.2003, p. 500-505.

    Research output: Contribution to journalArticle

    Utter, Alan C. ; Goss, Fredric L. ; Swan, Pamela ; Harris, Gregory S. ; Robertson, Robert J. ; Trone, Gregory A. / Evaluation of Air Displacement for Assessing Body Composition of Collegiate Wrestlers. In: Medicine and Science in Sports and Exercise. 2003 ; Vol. 35, No. 3. pp. 500-505.
    @article{c26c7da548c84799bf09aec48c63d015,
    title = "Evaluation of Air Displacement for Assessing Body Composition of Collegiate Wrestlers",
    abstract = "Purpose: To evaluate the accuracy of air displacement plethysmography (ADP) by using the BOD POD{\circledR} in comparison with hydrostatic weighing (HW) in a collegiate wrestling population in hydrated and acutely dehydrated states. Methods: Body composition was determined by ADP, HW, and three-site skinfolds (SK) in 66 NCAA Division I collegiate wrestlers before and after acute dehydration (2.6{\%} reduction in body mass). For all methods, body density (Db) was converted to percent body fat ({\%}BF) by using the Brozek equation for Euro-Americans and the Schutte equation for African-Americans. Results: There were no significant differences between ADP and HW for Db, {\%}BF, and fat-free mass (FFM) in either the hydrated or dehydrated states. The standard errors of the estimate for {\%}BF estimated from ADP with HW as the reference method were 2.12{\%} (hydrated) and 2.16{\%} (dehydrated); prediction errors were 2.35{\%} (hydrated) and 2.49{\%} (dehydrated). Bland-Altman plots of Db and {\%}BF showed no systematic bias, and 64 out 66 subjects fell within the 95{\%} limits of agreement (mean difference ± 2 SD) for both variables. For SK, {\%}BF was significantly higher than HW in both the hydrated and dehydrated state. All methods (ADP, HW, and SK) showed a significant decrease in FFM from the hydrated to the dehydrated state. Conclusions: This study demonstrates that the BOD POD{\circledR} air displacement method provides similar estimates of Db, {\%}BF, and FFM when compared with HW in a heterogeneous collegiate wrestling population during hydrated and acutely dehydrated states. Pretest guidelines to ensure normal hydration status before body composition assessment using any method must be followed to minimize measurement error in {\%}BF.",
    keywords = "Bod pod, Body fat, Dehydration, Wrestling",
    author = "Utter, {Alan C.} and Goss, {Fredric L.} and Pamela Swan and Harris, {Gregory S.} and Robertson, {Robert J.} and Trone, {Gregory A.}",
    year = "2003",
    month = "3",
    day = "1",
    doi = "10.1249/01.MSS.0000053726.16625.D5",
    language = "English (US)",
    volume = "35",
    pages = "500--505",
    journal = "Medicine and Science in Sports and Exercise",
    issn = "0195-9131",
    publisher = "Lippincott Williams and Wilkins",
    number = "3",

    }

    TY - JOUR

    T1 - Evaluation of Air Displacement for Assessing Body Composition of Collegiate Wrestlers

    AU - Utter, Alan C.

    AU - Goss, Fredric L.

    AU - Swan, Pamela

    AU - Harris, Gregory S.

    AU - Robertson, Robert J.

    AU - Trone, Gregory A.

    PY - 2003/3/1

    Y1 - 2003/3/1

    N2 - Purpose: To evaluate the accuracy of air displacement plethysmography (ADP) by using the BOD POD® in comparison with hydrostatic weighing (HW) in a collegiate wrestling population in hydrated and acutely dehydrated states. Methods: Body composition was determined by ADP, HW, and three-site skinfolds (SK) in 66 NCAA Division I collegiate wrestlers before and after acute dehydration (2.6% reduction in body mass). For all methods, body density (Db) was converted to percent body fat (%BF) by using the Brozek equation for Euro-Americans and the Schutte equation for African-Americans. Results: There were no significant differences between ADP and HW for Db, %BF, and fat-free mass (FFM) in either the hydrated or dehydrated states. The standard errors of the estimate for %BF estimated from ADP with HW as the reference method were 2.12% (hydrated) and 2.16% (dehydrated); prediction errors were 2.35% (hydrated) and 2.49% (dehydrated). Bland-Altman plots of Db and %BF showed no systematic bias, and 64 out 66 subjects fell within the 95% limits of agreement (mean difference ± 2 SD) for both variables. For SK, %BF was significantly higher than HW in both the hydrated and dehydrated state. All methods (ADP, HW, and SK) showed a significant decrease in FFM from the hydrated to the dehydrated state. Conclusions: This study demonstrates that the BOD POD® air displacement method provides similar estimates of Db, %BF, and FFM when compared with HW in a heterogeneous collegiate wrestling population during hydrated and acutely dehydrated states. Pretest guidelines to ensure normal hydration status before body composition assessment using any method must be followed to minimize measurement error in %BF.

    AB - Purpose: To evaluate the accuracy of air displacement plethysmography (ADP) by using the BOD POD® in comparison with hydrostatic weighing (HW) in a collegiate wrestling population in hydrated and acutely dehydrated states. Methods: Body composition was determined by ADP, HW, and three-site skinfolds (SK) in 66 NCAA Division I collegiate wrestlers before and after acute dehydration (2.6% reduction in body mass). For all methods, body density (Db) was converted to percent body fat (%BF) by using the Brozek equation for Euro-Americans and the Schutte equation for African-Americans. Results: There were no significant differences between ADP and HW for Db, %BF, and fat-free mass (FFM) in either the hydrated or dehydrated states. The standard errors of the estimate for %BF estimated from ADP with HW as the reference method were 2.12% (hydrated) and 2.16% (dehydrated); prediction errors were 2.35% (hydrated) and 2.49% (dehydrated). Bland-Altman plots of Db and %BF showed no systematic bias, and 64 out 66 subjects fell within the 95% limits of agreement (mean difference ± 2 SD) for both variables. For SK, %BF was significantly higher than HW in both the hydrated and dehydrated state. All methods (ADP, HW, and SK) showed a significant decrease in FFM from the hydrated to the dehydrated state. Conclusions: This study demonstrates that the BOD POD® air displacement method provides similar estimates of Db, %BF, and FFM when compared with HW in a heterogeneous collegiate wrestling population during hydrated and acutely dehydrated states. Pretest guidelines to ensure normal hydration status before body composition assessment using any method must be followed to minimize measurement error in %BF.

    KW - Bod pod

    KW - Body fat

    KW - Dehydration

    KW - Wrestling

    UR - http://www.scopus.com/inward/record.url?scp=12244271068&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=12244271068&partnerID=8YFLogxK

    U2 - 10.1249/01.MSS.0000053726.16625.D5

    DO - 10.1249/01.MSS.0000053726.16625.D5

    M3 - Article

    C2 - 12618582

    AN - SCOPUS:12244271068

    VL - 35

    SP - 500

    EP - 505

    JO - Medicine and Science in Sports and Exercise

    JF - Medicine and Science in Sports and Exercise

    SN - 0195-9131

    IS - 3

    ER -