Chapter 4
The sit-and-reach test is used to measure _______.
Name a RELATIVE CONTRAINDICATION for symptom-limited maximal exercise testing?
Known obstructive left main coronary stenosis, tachyarrhythmias with uncontrolled ventricular rate, complete heart block, recent stroke, BP > 200 or 110
What kind of path of electrical activity in the heart is against electrical activity of ECG lead?
Negative
Considered the gold standard for body composition measurements.
Hydrodensitometry (underwater weighing)
To measure muscular strength, the 1-RM bench press measures the strength of all the muscles below EXCEPT:
A) Triceps brachii
B) Pectoralis major
C) Anterior deltoid
D) Latissimus dorsi
D) Latissimus dorsi
Give me the BMI ranges for the overweight category.
25.0-29.9
Name an ABSOLUTE CONTRAINDICATION for symptom-limited maximal exercise testing?
Acute myocardial infarction within 2 d, ongoing unstable angina, active endocarditis, uncontrolled arrhythmia, acute aortic dissection, etc..
What does the P-wave represent?
Atrial depolarization
Why does the Borg scale range from 6-20?
To simulate heart rate response during aerobic training.
Name a "field test" of cardiorespiratory fitness.
1.5 mi test, Cooper 12-min test, Rockport One-Mile Fitness Walking Test, 6-min walk test
The ability to complete many push-ups would reflect what component of physical fitness?
Muscular endurance
What is the most common exercise testing mode in the United States?
Treadmill
What does the T-wave represent?
Ventricular repolarization
What is the principle behind body composition estimated from hydrodensitometry?
Water has a density of 1 g/cm3; muscle has a density of 1.05 g/cm3; fat has a density of 0.9 g/cm3. The greater the water displacement is, the more muscle mass a person has.
What is the rule of 300?
Divide 300 by the number of large boxes between R-R intervals.
Which skinfold sites are taken diagnonally?
Chest, subscapular, and suprailiac
Cycle ergometer is more common in _______.
Europe
What does the QT interval represent?
Time period of complete ventricular activity
How does the bioeletrical impedance analysis (BIA) estimate muscle mass and body fat?
Sends an electrical current throughout the body. Muscle is a conductor and fat is an insulator.
When measuring skinfolds, a site should be retested when the measurements are not within:
1-2 mm
Viewed as satisfactory for health in terms of percent body fat ranges.
Men:10%–22%
Women 20%–32%
What is the normal blood pressure response to workload increments?
Increase 10 mmHg/min per 1 MET
How much time does a small box represent in a normal ECG run?
0.04 seconds
Method by which measurements of respiratory gas exchange (oxygen consumption and carbon dioxide production) are used to estimate the type and amount of substrate oxidized and the amount of energy produced by oxidation.
Indirect calorimetry
What is the principle behind skinfold measurements?
The amount of subcutaneous fat is proportional to the total amount of body fat.