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CHPS Nutrition Core, Nutrition Assessment (CHOP)

Director: Zemel, Babette, PhD (CHOP)


The Nutrition Assessment Unit of the Nutrition Core is a state-of-the-art facility for the assessment of growth and body dimensions, body composition (the amount of muscle, fat and bone in the body), energy expenditure, bone density, and muscle strength. The Unit has two locations and four experienced technicians for performing research assessments.






  • Anthropometric Measurements ( Analysis service )

    • Basic Measurements (Height/length/weight/head circumference)
    • Knee Height Assessment for Short Term Growth
    • Circumferences (Arm/waist/hip/chest/calf)
    • Skin Fold Thicknesses (Biceps/triceps/subscapular/supra iliac)
    • Alternate Height Assessments (Lower leg length/upper arm length)
    • Breadth Measures (Elbow, Shoulder, Abdominal depth)

  • Body Composition ( Analysis service )

    Infant Total Body Electrical Conductivity (TOBEC)

    Bod Pod (Child/Adult Body Composition by Air-Displacement Plethysmography)

    Pea Pod (Infant Body Composition by Air-Displacement Plethysmography)

    Bioelectrical Impedance Analysis (BIA) whole body or segments

  • Bone Health Assessment: DXA, pQCT, Ultrasound ( Analysis service )

    Dual Energy X-Ray Absorptiometry (DXA) - For Infants, Children and Adults
    - Whole Body
    - AP Lumbar Spine
    - Lateral Lumbar Spine
    - Hip
    - Forearm
    - Tibia
    - Distal Femur
    - Intervertebal Assessment: AP Spine or Lateral
    - Whole Body Infant
    - Infant AP

    Peripheral Quantitative Computed Tomography (pQCT)
    - Cortical and trabecular bone density, cortical thickness and strain-strength index by measurement of
    - Distal tibia
    - Distal radius
    - High Resolution

    Ultrasound (CUBA)
    - Calcaneus (children of 7 years of age and adults)

  • Bone mineral density service ( Analysis service )

    Bone mineral density assessment of the lumbar spine, proximal femur, and distal radius available by Hologic Horizon DXA

  • Energy Expenditure ( Analysis service )

    Indirect Calorimetry
    - Resting Energy Expenditure (REE, fasting with inpatient admission to CTRC)
    - Sleep Energy Expenditure (SEE) (Fasting non-AM study)
    - Respiratory Quotient (RQ) (Fasting)
    - Post-Prandial Resting Energy Expenditure
    Physical Activity
    - Acti-trac Accelerometers

  • Muscle Strength Testing ( Analysis service )

    Hand Grip Dynamometer
    Biodex (isometric strength)
    Plantar/Dorsi Flextion (Ankle)
    Force Plate (jump strength)

  • Other Growth and Nutrition Assessment Measures ( Analysis service )

    Urine Pregnancy Testing prior to DXA Scan(s)

    Stable Isotope Dosing and Urine Collection Instruction

    Parent Education (Food records/stool and/or urine collections)

    Pubertal Assessment Form

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Last updated: 2019-11-11T15:41:29.663-05:00

Copyright © 2016 by the President and Fellows of Harvard College
The eagle-i Consortium is supported by NIH Grant #5U24RR029825-02 / Copyright 2016