Brett Nickerson

Brett Nickerson
The Ohio State University | OSU · School of Health and Rehabilitation Sciences

Ph.D. CSCS,*D, EP-C, FACSM

About

116
Publications
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Introduction
Brett S. Nickerson currently works in the School of Health and Rehabilitation Sciences, The Ohio State University. He recently completed a large-scale body composition study in Hispanic adults with funding support from NIGMS. This research is expected to result in multiple manuscripts. One of his most recent publications in Nutrition Research is " Proportional Bias of Multi-frequency Bioimpedance Analysis is Larger in Hispanic Females than Males".

Publications

Publications (116)
Article
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Background & Aims Muscle quality index (MQI) can be computed in various ways. Also, many studies have evaluated MQI in older adults and non-Hispanic populations. The aim of this study was to compare various muscle quality indexes between Hispanics and non-Hispanic Caucasians when stratifying grip strength and appendicular lean mass measurements. M...
Article
Full-text available
The purpose of this study was to compare single- and multi-frequency bioimpedance (BIA) devices against dual energy X-ray absorptiometry (DXA) for appendicular lean mass (ALM) and muscle quality index (MQI) metrics in Hispanic adults. One-hundred thirty-one Hispanic adults (18–55 yrs.) participated in this study. ALM was measured with single-freque...
Article
Full-text available
Body composition assessment plays a pivotal role in understanding health, disease risk, and treatment efficacy. This narrative review explores two primary aspects: imaging techniques, namely ultrasound (US) and dual‐energy x‐ray absorptiometry (DXA), and the emergence of artificial intelligence (AI) and mobile health apps in telehealth for body com...
Preprint
Full-text available
Background & Aims: Muscle quality index (MQI) can be computed in various ways. Also, many studies have evaluated MQI in older adults and non-Hispanic populations. The aim of this study was to compare various muscle quality indexes between Hispanics and non-Hispanic Caucasians when stratifying grip strength and appendicular lean mass measurements....
Article
Full-text available
Background To date, body composition assessments in Hispanics, computed via bioimpedance devices, have primarily focused on body fat percent, fat mass, and fat-free mass instead of total body water (TBW). Additionally, virtually no information is available on which type of bioimpedance device is preferred for TBW assessments in Hispanic populations...
Article
Background: A rapid 4-compartment (4C) model integrates dual energy X-ray absorptiometry (DXA) and multi-frequency bioimpedance analysis (MFBIA), which may be useful for clinical and research settings seeking to employ a multi-compartment model. Objective: The purpose of this study was to determine the added benefit of a rapid 4C model over stan...
Article
Full-text available
The primary aim of this study was to evaluate the accuracy of skinfold thickness (SFT) measurements for the estimation of %Fat when compared to dual energy X-ray absorptiometry (DXA) in individuals with Down syndrome (DS). The secondary aim was to develop a new SFT-based body fat equation (SFT NICKERSON). SFT-based %Fat was estimated using a body f...
Article
Background: Dual energy X-ray absorptiometry (DXA) is often used as a criterion measure in body composition research and in clinical settings for the estimate of body fat percent (%Fat). The accuracy of DXA for predicting %Fat has primarily been conducted in non-Hispanic populations. Aim: The purpose of this study was to determine the agreement...
Article
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The purpose of the study was to examine the effects of carbohydrate (CHO) mouth rinsing on autonomic and metabolic recovery as well as cycling performance. Ten male recreational cyclists (age = 30 ± 6 years, VO 2peak = 54.5 ± 8.1 mL·kg ⁻¹ ·min ⁻¹ ) completed a randomized, double-blind, placebo-controlled, crossover designed study. A CHO or a placeb...
Article
Body composition algorithms are typically validated using multi-ethnic populations without accounting for ethnicity. This might be problematic when using multi-frequency bioimpedance analysis (MF-BIA) for Hispanics. Group error (i.e., constant error [CE]), individual error (i.e., 95% limits of agreement [LOAs]), and proportional bias of MF-BIA were...
Article
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Previous research has compared 2- and 3-compartment (2C and 3C, respectively) models against criterion 4-compartment (4C) models while utilizing the same body density (Db) method for all measures. This design induces an inherent bias and obscures the added benefit of a 3C model over the simpler 2-compartment (2C) models. The purpose of this study w...
Article
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The purpose of this study was to investigate the effects of a 4-week moderate-intensity aerobic exercise on changes of body composition and markers of inflammation and oxidative stress independent from weight loss in middle-aged obese females. Thity-five obese females were randomly assigned to either an exercise (EX, N = 16) or control (CON, N = 19...
Article
Background The purpose of this study was to compare relative adiposity (%Fat) derived from a 2-dimensional image-based 3-component (3C) model (%Fat3C-IMAGE) and dual-energy X-ray absorptiometry (DXA) (%FatDXA) against a 5-component (5C) laboratory criterion (%Fat5C). Methods Fifty-seven participants were included (63.2% male, 84.2% White/Caucasian...
Article
Introduction: Anthropometric-based equations are used to estimate percent body fat (%BF) when laboratory methods are impractical or not available. However, because these equations are often derived from two-compartment models, they are prone to error due to assumptions regarding fat-free mass composition. The purpose of this study was to develop a...
Article
Full-text available
International Journal of Exercise Science 14(4): 971-979, 2021. The purpose of this study was to determine whether the number of warm-up sets and relative intensity impacts the prediction of velocity-based one-repetition maximum (1RM) values. Twenty resistance-trained individuals (males: n = 10, females: n = 10) participated in this study. Warm-up...
Article
Regression equations are commonly used to predict residual lung volume (RV) during underwater weighing when measurement is not practical. However, the equations currently available were derived from on‐land measures of RV and may account for changes in lung capacity during submersion, thus leading to inaccuracies in assessment of percent body fat (...
Article
The diagnostic accuracy of clinical-based body composition methods such as body mass index (BMI), waist circumference (WC), bioimpedance analysis (BIA), and dual energy X-ray absorptiometry (DXA) has yet to be evaluated in Hispanic adults. Moreover, it has also been suggested that previously established obesity cutoff values may need adjusting. Pu...
Conference Paper
PURPOSE: The purpose of the current study was two-fold: 1) to develop a new dual energy X-ray absorptiometry (DXA)-derived body volume (BV) equation with the GE-Lunar Prodigy while utilizing underwater weighing (UWW) as a criterion and 2) cross-validate 4-compartment(4C) models when utilizing the new DXA-derived BV equation (4C-DXANICKERSON), Wilso...
Article
Common body composition estimation techniques necessitate assumptions of uniform fat-free mass (FFM) characteristics, although variation due to sex, race, and body characteristics may occur. National Health and Nutrition Examination Survey (NHANES) data from 1999 to 2004, during which paired dual-energy X-ray absorptiometry (DXA) and bioimpedance s...
Article
Purpose: The purpose of this study was two-fold: 1) to determine whether differences in mean concentric velocity (MCV), repetitions-to-failure (RTF), measured one-repetition (1RM), and 1RM prediction methods vary between lifter and spotter sex; and 2) determine the accuracy of MCV1RM and RTF1RM prediction equations in the presence of either a male...
Article
Full-text available
The purpose of this study was to evaluate the inter-device reliability of three VERT devices (Mayfonk Athletic, Florida, USA) when worn on the waist (W), left-hip (LH), and right-hip (RH) during single- and double-leg counter movement jumps (CMJ) in collegiate athletes. METHODS: Thirty-two female and twenty-eight male NCAA Division II athletes (n =...
Article
Body mass index (BMI)-based body fat equations from Womersley (BMIWOMERSLEY), Jackson (BMIJACKSON), Deurenberg (BMIDEURENBERG), and Gallagher (BMIGALLAGHER) are practical in clinical and field settings. However, research has shown these prediction equations produce large error, which may be due to the inability of BMI to account for differences in...
Article
Higher relative adiposity is independently associated with adverse health consequences. As such, accurate estimates of body composition in field settings are of utmost importance. The aim of this study was to examine the validity of the Body Adiposity Index (BAI) and Relative Fat Mass (RFM) as measures of total body adiposity. BAI and RFM were asse...
Conference Paper
Full-text available
The necessity of using underwater weighing (UWW) or air displacement plethysmography (ADP) for body volume (BV) restricts the use of a four-compartment (4C) model to research settings. As a result, dual energy X-ray absorptiometry (DXA) has been proposed as an alternative, which would be useful for clinical settings. Nonetheless, it is unknown whet...
Conference Paper
Full-text available
The method used to stratify weight status when evaluating fat-free mass (FFM) characteristics has primarily been based upon body mass index (BMI) and not body fat percent (BF%). As a result, it is unknown whether deviations in FFM characteristics are similar when stratifying weight status based upon BMI or BF%. Purpose: The purpose of this study wa...
Conference Paper
Full-text available
Bioelectrical impedance analysis (BIA) and skinfold (SF) techniques are commonly used to estimate body composition in athletic settings. Both methods are based upon a 2-compartment (2C) model approach, which assumes the hydration of fat-free mass (FFM) is constant (73.80%). Deviations from assumed constants such as FFM hydration have previously bee...
Conference Paper
Full-text available
Estimating 1-repetition maximum (1RM) by measuring mean concentric velocity (MCV) is an indirect method that has gained popularity in the field of strength and conditioning. It has previously been recommended that 4 – 6 loads ranging from 30 – 85% 1RM be used when estimating 1RM via MCV. Nonetheless, the validity of fewer loads at varying intensiti...
Conference Paper
Full-text available
One-repetition maximum (1RM) is commonly evaluated in strength and conditioning programs in order to monitor the progress of exercise prescriptions. Although the benefits of muscular strength are well-known, conducting 1RM protocols can be time consuming and is not recommended for certain populations. Alternatively, the estimation of 1RM can be com...
Article
Full-text available
The purpose of the current study was two-fold: 1) to develop a new dual energy X-ray absorptiometry (DXA)-derived body volume (BV) equation with the GE-Lunar prodigy while utilizing underwater weighing (UWW) as a criterion; and 2) cross-validate the novel DXA-derived BV equation (4C-DXANICKERSON), Wilson DXA-derived BV equation (4C-DXAWILSON), and...
Article
Background: A four-compartment (4C) model quantifies fat, water, mineral and residual. As such, 4C models are more accurate than two-compartment (2C) models based off cadaver reference values (RV), which necessitate assumptions regarding fat-free mass (FFM) characteristics. Nonetheless, research has yet to determine whether the FFM characteristics...
Article
Full-text available
We investigated effects of 10-month telephone aftercare intervention following primary obesity intervention on changes in body fat percentage, physical fitness, and lipid profiles in obese Hispanic children. Seventy-one obese children were randomly assigned to (1) primary intervention and 10-month telephone aftercare intervention (PITI; N = 26), (2...
Article
Full-text available
This study evaluated the accuracy of bioimpedance analysis (BIA)- and skinfold (SF)-based body fat percentage estimates in collegiate athletes with varying fat-free mass (FFM) hydration levels. Subjects were evaluated as a whole (n = 63) and at FFM hydration levels of 64.00%–68.99% (FFM-HydrationL1; n = 37) and 69.00%–74.00% (FFM-HydrationL2; n = 2...
Article
Background: BMI based body fat equations developed from Womersley and Durnin (BMIWO), Jackson et al. (BMIJA), Deurenberg et al. (BMIDE), and Gallagher et al. (BMIGA) are commonly used to quantify body fat percentage (BF%). However, relative fat mass (RFM) is a new anthropometric-based method that has been proposed as an alternative. Aims: The pu...
Article
Background: The Brozek and Siri formulas estimate relative adiposity (%Fat) from total body density (Db) using a 2-compartment (2C) model. Racial/ethnic differences in Db have been reported, along with subsequent errors in estimated %Fat. Objective: The primary aim of this systematic review and meta-analysis was to examine potential race/ethnic...
Article
Nickerson, BS, Williams, TD, Snarr, RL, and Park, K-S. Individual and combined effect of inter-repetition rest and elastic bands on jumping potentiation in resistance-trained men. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to determine the individual and combined effects of cluster sets (CS) and elastic bands for jumping...
Article
Full-text available
Background/objectives: The body adiposity index (BAI) and relative fat mass (RFM) are anthropometric measures developed to estimate body composition (%Fat). There is limited research validating these methods of body composition assessment in adults with Down syndrome (DS). The aim of this study was to examine the accuracy of the BAI and RFM in a s...
Conference Paper
Resistance training exercises are popular due to their favorable health outcomes, particularly those associated with increased muscular fitness. For each exercise, proper load prescription may vary based upon the specific goals of the athlete using various metrics (i.e., percentage of one-repetition maximum (%1RM), mean velocity (MV), and peak powe...
Conference Paper
Segmental bioimpedance analysis (BIA) has emerged as a desirable technique for assessing body composition in obese populations when more sophisticated laboratory equipment is not readily available. Nonetheless, research has yet to examine the agreement of various segmental BIA devices, air displacement plethysmography (ADP) and dual energy X-ray ab...
Article
Modified laboratory- and field-based multicompartment models have been found valid for estimating body composition. However, the comparability between these models is unknown. Purpose: This study determined the validity of field and laboratory three-compartment (3C) models in healthy adults. Methods: One hundred twenty participants (63 men and...
Article
Resistance exercise is popular because of favorable health outcomes associated with increased muscular fitness. For these reasons, 1 repetition maximum (1RM), mean velocity (MV), and peak power (PP) are of interest during the bench press. However, research has yet to evaluate whether spotter sex impacts bench press performance. Therefore, the purpo...
Article
Background: Body composition estimates using skinfold thickness are common in field settings and can provide a reasonably accurate measure when more advanced technology is unavailable. However, the observed error between skinfolds and criterion body composition measures may be influenced by the methodology used to derive the criterion measure. Ai...
Article
This study examined the agreement between 2 segmental bioimpedance analysis (BIA) devices, air displacement plethysmography (BOD POD), and dual energy X-ray absorptiometry (DXA) for estimating body composition in obese adults. Fifty obese adults (25 men and 25 women; age = 34.20 ± 11.19 years; BMI = 36.14 ± 5.33 kg/m2) had their body fat percentage...
Article
Nickerson, BS, Snarr, RL, and Ryan, GA. Validity of foot-to-foot bioelectrical impedance for estimating body composition in NCAA Division I male athletes: A 3-compartment model comparison. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to validate single-frequency foot-to-foot bioelectrical impedance analysis (FF-BIA) agains...
Article
Full-text available
Background Bioelectrical impedance analysis (BIA) is often used to estimate total body water (TBW), intracellular body water (ICW), extracellular body water (ECW), and body fat percentage (BF%). A common restriction for BIA analysis is abstinence from caffeine 12-h prior to testing. However, research has yet to determine whether the consumption of...
Article
Full-text available
The purpose of this investigation was to determine the validity of 4-compartment (4C) model body fat percent (BF%) estimates when using dual energy x-ray absorptiometry (DXA) derived body volume (BV) equations (4C-DXA1 and 4C-DXA2) in adults with varying body mass index (BMI) and waist circumference (WC) classifications. Each model was compared to...
Article
Background: Bioelectrical impedance analysis has evolved over the years to include the use of multiple frequencies and impedance measurements to improve the accuracy and reliability of body composition estimates. The purpose of this investigation was to evaluate the reliability of the InBody230, InBody720, and InBody770 to measure body fat percent...
Article
Full-text available
OBJECTIVES: The purpose was to determine if skinfolds (SF) and bioelectrical impedance analysis (BIA) could provide accurate estimates of body volume (BV) and total body water (TBW), respectively, for use in a 3-compartment (3-C) model to estimate percent body fat (BF%) when compared to laboratory derived measures. SUBJECTS/METHODS: A sample of si...
Article
Implementation of an overnight fast is a pervasive recommendation prior to body composition assessment, but this is not always feasible. Previous research has indicated that, for dual-energy x-ray absorptiometry (DXA) scans, the trunk region may be particularly susceptible to biological error induced by food and fluid intake. This analysis explored...
Article
Purpose: Simple body composition models, such as two-compartment models, employ assumptions which may be violated in specific athletic populations (e.g. the constancy of fat-free mass density [DFFM] and hydration [TBW:FFM]). The present analysis examined FFM characteristics of muscular physique athletes. Methods: Twenty-six athletes (16 M: 94.5±...
Conference Paper
Accurate measures of body composition, usually demonstrated as body fat percentage (BF%), require multi-compartment modeling being calculated from a multitude of laboratory methods. For example, the Wang four-compartment (4-C) method requires the measure of body volume (BV) via hydrostatic weighing (UWW), total body water (TBW) via either isotopic...
Conference Paper
Resistance training protocols are strategically designed to improve sport-specific skills such as the countermovement jump (CMJ). Previous research has shown that stronger athletes have a greater potential for producing higher power outputs than weaker subjects. However, there is limited information on whether stronger athletes respond more favorab...
Conference Paper
Strength and conditioning practitioners often seek to incorporate training modalities that will maximize athletic performance. A method that has been suggested to enhance acute muscular performance is post-activation potentiation (PAP). A major consideration by practitioners is the fatigue-potentiation interaction that occurs following a heavy resi...
Article
Schoenfeld, BJ, Nickerson, BS, Wilborn, CD, Urbina, SL, Hayward, SB, Krieger, J, Aragon, AA, and Tinsley, G. Comparison of multifrequency bioelectrical impedance vs. dual-energy x-ray absorptiometry for assessing body composition changes after participation in a 10-week resistance training program. J Strength Cond Res XX(X): 000-000, 2018-The purpo...
Article
Full-text available
ABSTRACT Background & Aims: The Body Adiposity Index (BAI) is an anthropometric measure developed to estimate body composition in field settings. Although this novel measure has been validated against clinical measures of adiposity (%Fat), the relative accuracy of other anthropometric measures, such as Body Mass Index (BMI), and waist circumference...
Article
The purpose of this study was to examine changes in C‐reactive protein (CRP) and TNF‐α from blood samples before and after exercise at different intensities in smokers (SM) and non‐smokers (NS) after a 2 hour smoking cessation. Our laboratory previously reported large differences in CRP and TNF‐α at Pre between SM and NS. Furthermore, there were mo...
Article
The purpose of this study was to compare body fat estimates and fat-free mass (FFM) characteristics produced by multi-compartment models when utilizing either dual energy X-ray absorptiometry (DXA) or single-frequency bioelectrical impedance analysis (SF-BIA) for bone mineral content (BMC) in a sample of physically active adults. Body fat percentag...
Article
The purpose of this study was to determine the time course of BIA-derived body fat percentage (BF%) and total body water (TBW) values in the 1h following a moderate bout (60% heart rate reserve [HRR]) of steady state aerobic exercise in apparently healthy men. College-aged adult males (n=15) had their BF% and TBW estimated via BIA before (PRE), imm...
Conference Paper
The ease of calculating body mass index (BMI)-based body fat percentage (BF%) is appealing in collegiate male soccer player who have limited time availability and strict training regimens. However, research has yet to evaluate whether BMI-based BF% equations are valid when compared to a criterion multi-compartment model. PURPOSE: The purpose of thi...
Conference Paper
Bone mineral content (BMC) and total body water (TBW) are commonly assessed via dual energy X-ray absorptiometry (DXA) and bioimpedance spectroscopy (BIS), respectively, for a criterion 4-compartment body composition model (4C CRITERION). However, single-frequency bioelectrical impedance analysis (SF-BIA) has been proposed as an alternative for cal...
Poster
Full-text available
BODY ADIPOSITY INDEX, BODY MASS INDEX, AND BODY FAT IN YOUNG ADULTS B.A. Welborn1, B.S. Nickerson2, M.V. Fedewa,1, M.R. Esco.1 1University of Alabama, Tuscaloosa, AL. 2Texas A&M International University, Laredo, TX. The validity of body mass index (BMI) as a measure of health has been questioned, and alternative anthropometric indices have been pr...
Article
Full-text available
The purpose of this study was to determine if back squat cluster sets (CS) with varying inter-repetition rest periods would potentiate greater sprint performance compared with a traditional set parallel back squat in collegiate soccer players. Twelve collegiate male soccer players (age, 21.0 ± 2.0 years; height, 180.0 ± 9.0 cm; body mass, 79.0 ± 9....
Article
The purpose of this study was to validate single-frequency hand-to-foot bioelectrical impedance analysis (HFBIA) for estimating bone mineral content (BMC) using dual energy X-ray absorptiometry (DXA) as the criterion measure in healthy, men and women aged 18-40 y. A total of 80 men and women participated. Bone mineral content was estimated on the s...
Article
Full-text available
High-Intensity Functional Training (HIFT) is an increasingly popular mixed modal high-intensity training style with little empirical evidence regarding adaptations. The objective of this study was to examine alterations in resting cardiac autonomic activity through the measurement of heart rate variability (HRV) and body composition in women follow...
Article
BACKGROUND: High-Intensity Functional Training (HIFT) is a popular mixed-modal program that utilizes both resistance and aerobic based exercises. The aim of this study was to examine the physiological effects of HIFT programing on physically active men (10) and women (10) over a four-week period through the measure of aerobic capacity, anaerobic ca...
Article
The purpose of this study was twofold: 1) compare body volume (BV) estimated from dual energy X-ray absorptiometry (DXA) to BV from a criterion underwater weighing (UWW) with simultaneous residual lung volume (RLV), and 2) compare four-compartment (4C) model body fat percentage (BF%) values when deriving BV via DXA (4CDXA) and UWW (4CUWW) in physic...
Article
The purpose of this study was to compare underwater weighing (UWW) and four-compartment (4C) model body fat percentage (BF%) for predicted vs. simultaneously measured residual lung volume (RLV). Forty-seven women and thirty-three men (age=22±5 years) had UWW and 4C model BF% determined using Boren et al. (RLVBOREN), Goldman and Becklake (RLVGB), an...
Article
The purpose of this study was to determine if heat exposure alters the measures of total body water (TBW), extracellular water (ECW), and intracellular water (ICW) in both single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS). Additionally, we sought to determine if any differences exist between the BIA and BIS...
Conference Paper
Full-text available
Underwater weighing (UWW) and deuterium oxide (D 2 O) dilution are traditional methods for determining body volume (BV) and total body water (TBW), respectively, via the three-compartment (3C) model for body fat percentage (BF%). However, more convenient surrogates are often used for BV and TBW measures, such as BOD POD and bioimpedance methods, re...
Conference Paper
The assessment of total and segmental body composition via bioelectrical impedance (BIA) has mainly been utilized with multi-frequency BIA devices. Advances in BIA technology have recently made it possible to estimate total and segmental body composition via single-frequency BIA (SF-BIA). However, the accuracy of SF-BIA for estimating total and seg...
Article
The purpose of this study was to compare body fat percentage (BF%) and fat-free mass (FFM) values from bioelectrical impedance analysis (BIA) equations to values determined from a four-compartment (4C) model. Eighty-two adults (42 men and 40 women) volunteered to participate (age = 23 ± 5 years). BF% and FFM were estimated from previously developed...
Article
The purpose of this investigation was to evaluate fractionized self-selected walking in women with one continuous 30 min (1-30) bout compared to three 10 min (3-10) bouts. Participants were19women (age 35.58 ± 14.17 yrs, 72.93 ± 35.07 kg, height 165.02 ± 2.28 cm and fat % 33.20 ± 9.94, Vo2max 30.16 ± 7.11). In a cross-over design subjects walked on...
Article
The purpose of this study was to compare single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS) with underwater weighing (UWW) body fat percentage (BF%) before(PRE), immediately post (IP), and 60 minutes post (60P) an acute bout of moderate and vigorous aerobic exercise. Nine men (age = 24.6 6 3.7 years) volunte...
Article
The purpose of this study was to compare body mass index (BMI)-based body fat percentage (BF%) equations and skinfolds to a four-compartment (4C) model in men and women. One hundred and thirty adults (63 women and 67 men) volunteered to participate (age = 23±5 years). BMI was calculated as weight (kg) divided by height squared (m2). BF% was predict...
Conference Paper
Accurate measures of body fat percentage (BF%) require multi-compartment modeling derived from a number of laboratory methods. For example, the Siri three-compartment (3-C) method requires the measure of body volume (BV) from hydrostatic weighing (HW) and total body water (TBW) from either isotopic measures or bioimpedance spectroscopy (BIS). Howev...
Conference Paper
The assessment of body fat percentage (BF%) with bioelectrical impedance analysis (BIA) is advantageous in field settings due to its non-invasive nature, quick administration, and relatively low cost. Numerous BIA equations have been developed and are available for practitioners. However, the validity of each when compared to a four-compartment mod...
Conference Paper
Residual lung volume (RLV) is a major factor to consider when determining body volume (BV) from underwater weighing (UWW). However, RLV measures are often difficult to obtain as lack of equipment and issues with subject compliance are common. Therefore, prediction equations for RLV exist. BV is an important metric within the four-compartment model...
Conference Paper
Bioelectrical impedance analysis (BIA) is a common field method used to measure body fat percentage (BF%) in sport and health and fitness settings. Though a bout of exercise may influence the reliability of BIA, limited research exists to examine this possibility. PURPOSE: The purpose of this investigation was to examine the influence of an acute b...
Conference Paper
Lean soft tissue (LST) is an important parameter of body composition assessment, especially as it relates to strength and conditioning. Dual-energy x-ray absorptiometry (DXA) is an accurate laboratory method of measuring LST. However, DXA measures are costly, time consuming, and not readily available. Some hand-to-foot bioelectrical impedance (BIA)...
Article
Purpose: The purpose of this investigation was to compare the electromyographical differences of the rectus abdominis (RA), external oblique (EO), erector spinae (LSES), and rectus femoris (RF) during pike variations performed on various surfaces. Methods: Twenty men and women volunteered for this study. All subjects performed five variations of...
Article
Full-text available
The purpose of this investigation was to evaluate measurements of body-fat percentage (BF%) in 4 body-mass-index- (BMI) -based equations and dual-energy X-ray absorptiometry (DXA) in individuals with Down syndrome (DS). Ten male and 10 female adults with DS volunteered for this study. Four regression equations for estimating BF% based on BMI previo...
Article
Full-text available
LEARNING OBJECTIVES This article discusses strategies practitioners can implement in a health and fitness setting to communicate effectively with individuals who have Down syndrome. Readers will learn how to conduct a task analysis and the proper implementation of prompting when consumers with Down syndrome begin an exercise program that involves t...
Conference Paper
Full-text available
Bioelectrical impedance spectroscopy (BIS) is a non-invasive method that is used for measuring body fat percentage (BF%) in various field settings. Events that might alter hydration status such as heat exposure may impact the reliability of BIS. However, there is limited information available to examine this statement. PURPOSE: The purpose of this...