Cardiovascular and Body Composition Testing

CSCS Certified Strength and Conditioning Specialist

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1 Introduction

About the CSCS Exam Structure and Content Breakdown Pass Rates and Scoring How to Use This Guide

2 Exercise Science

Muscular and Neuromuscular Systems Skeletal and Cardiovascular Systems Bioenergetics and Metabolism Biomechanics Physiological Adaptations to Training

3 Sport Psychology & Nutrition

Motivation and Goal Setting Arousal, Anxiety, and Performance Mental Skills and Team Dynamics Macronutrients and Energy Hydration, Timing, and Supplements

4 Exercise Technique

Resistance Training Technique Olympic Lifting Technique Plyometric and Speed Training Flexibility and Warm-up Spotting and Equipment Safety

5 Program Design

Needs Analysis and Training Goals Training Variables Periodization Models Resistance Training Program Design Speed, Agility, and Conditioning Programs

6 Testing, Evaluation & Administration

Pre-Participation Screening Cardiovascular and Body Composition Testing Strength, Power, and Speed Testing Flexibility Assessment Facility Management and Legal Issues

Cardiovascular and Body Composition Testing

Key Takeaways Explain This Topic AI

VO2max is the gold standard for measuring aerobic capacity; direct measurement requires metabolic cart analysis.

Field tests like the 12-minute run, 1.5-mile run, and PACER/beep test estimate aerobic capacity without laboratory equipment.

Skinfold measurements use 3-site or 7-site protocols to estimate body fat percentage within 3-4% error.

BIA (bioelectrical impedance analysis) accuracy is affected by hydration status, food intake, and exercise.

DEXA provides the most accurate body composition assessment but requires specialized equipment and certified technicians.

Last updated: January 2026

Quick Answer: VO2max testing measures maximal aerobic capacity either directly (metabolic cart) or indirectly (prediction equations from submaximal tests). Field tests like the 12-minute run, 1.5-mile run, and PACER test estimate aerobic fitness without lab equipment. Body composition can be assessed via skinfolds (3-4% error), BIA (hydration-dependent), or DEXA (gold standard).

• Cardiovascular Endurance Testing
• Direct vs. Indirect VO2max Measurement

• Method Description Accuracy Equipment
• Direct Metabolic cart measures O2/CO2 during maximal exercise Gold standard Metabolic analyzer, treadmill/bike
• Indirect Maximal Prediction from maximal test performance ±3-5 mL/kg/min Treadmill/bike, timing
• Indirect Submaximal Extrapolation from submaximal HR response ±10-15% HR monitor, treadmill/bike
• Criteria for True VO2max

A true VO2max is achieved when at least 2-3 of these criteria are met:

• Criterion Threshold
• VO2 Plateau <150 mL/min increase despite increased workload
• Respiratory Exchange Ratio (RER) ≥1.10-1.15
• Heart Rate Within 10 bpm of age-predicted HRmax (220 - age)
• Blood Lactate ≥8 mmol/L
• Rating of Perceived Exertion ≥17 on 6-20 Borg scale
• Laboratory VO2max Protocols
• Bruce Treadmill Protocol

• Stage Speed (mph) Grade (%) Duration
• 1 1.7 10 3 min
• 2 2.5 12 3 min
• 3 3.4 14 3 min
• 4 4.2 16 3 min
• 5 5.0 18 3 min
• 6 5.5 20 3 min
• 7 6.0 22 3 min
• Astrand Cycle Ergometer Protocol (Submaximal)

• Variable Protocol
• Workload 50-150W based on fitness level
• Duration 6 minutes at steady state
• Heart Rate Record at minutes 5 and 6
• Prediction Use Astrand-Ryhming nomogram
• Field Tests for Aerobic Capacity
• 12-Minute Run (Cooper Test)

• Variable Protocol
• Distance Cover maximum distance in 12 minutes
• Surface 400m track preferred
• Scoring Distance in meters or miles
• VO2max Equation VO2max = (Distance in meters - 504.9) / 44.73
• 12-Minute Run Normative Data (Males, mL/kg/min)

• Age Excellent Good Average Below Average Poor
• 13-19 >56 51-55 45-50 38-44 <38
• 20-29 >52 47-51 42-46 37-41 <37
• 30-39 >49 44-48 39-43 34-38 <34
• 40-49 >45 40-44 35-39 30-34 <30
• 1.5-Mile Run

• Variable Protocol
• Distance 1.5 miles (2.4 km)
• Scoring Time to completion
• VO2max Equation VO2max = 3.5 + 483 / time in minutes
• 1.5-Mile Run Normative Data (Time in Minutes)

• Rating Males 20-29 Females 20-29
• Excellent <9:45 <11:50
• Good 9:45-10:45 11:50-13:15
• Average 10:46-12:00 13:16-15:00
• Below Average 12:01-14:00 15:01-17:00
• Poor >14:00 >17:00
• PACER/Beep Test (20-Meter Shuttle Run)

• Variable Protocol
• Distance 20 meters between lines
• Pace Progressively increases (8.5 km/h start)
• Scoring Number of completed shuttles
• Termination Failure to reach line twice
• Body Composition Assessment Methods
• Method Comparison

• Method Accuracy (% BF error) Cost Practicality
• DEXA ±1-2% High Low - lab only
• Hydrostatic Weighing ±2-3% Moderate Low - pool needed
• Bod Pod ±2-3% High Moderate
• Skinfolds ±3-4% Low High
• BIA ±3-5% Low-Moderate High
• BMI N/A - not body composition Free High
• Skinfold Testing
• 3-Site Protocols

Men (Jackson-Pollock):

• Chest (diagonal fold, midway between anterior axillary line and nipple)
• Abdomen (vertical fold, 2 cm lateral to umbilicus)
• Thigh (vertical fold, midway between hip and knee)

Women (Jackson-Pollock):

• Triceps (vertical fold, midway between acromion and olecranon)
• Suprailiac (diagonal fold, above iliac crest)
• Thigh (vertical fold, midway between hip and knee)
• 7-Site Protocol (Both Genders)
• Chest
• Subscapular
• Midaxillary
• Triceps
• Abdomen
• Suprailiac
• Thigh
• Skinfold Testing Procedures

• Step Protocol
• 1 Identify anatomical landmarks on RIGHT side
• 2 Grasp skinfold 1 cm above site with thumb and index finger
• 3 Apply caliper perpendicular to fold, 1 cm from fingers
• 4 Wait 1-2 seconds before reading
• 5 Take 2-3 measurements at each site
• 6 Use median value if measurements differ by >2 mm
• Body Fat Classification

• Category Males Females
• Essential Fat 2-5% 10-13%
• Athletes 6-13% 14-20%
• Fitness 14-17% 21-24%
• Average 18-24% 25-31%
• Obese ≥25% ≥32%
• Bioelectrical Impedance Analysis (BIA)
• Pre-Test Guidelines for BIA Accuracy

• Factor Guideline
• Hydration Normal hydration status (no diuretics)
• Food/Drink No eating or drinking 4 hours prior
• Exercise No exercise 12 hours prior
• Alcohol No alcohol 48 hours prior
• Caffeine No caffeine 12 hours prior
• Bladder Empty bladder before testing
• BIA Limitations
• Highly affected by hydration status
• Less accurate for athletes vs. general population
• Population-specific equations required
• Environmental temperature affects results

Body Composition Method Accuracy (approximate %)