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The Survey Documentation and Analysis (SDA) archive is a collection of 250,000 research files.
Muscle Endurance
The ability of a muscle or group of muscles to sustain repeated contractions or to continue applying force against a fixed object for an extended period.
Cardiovascular Fitness
The ability of the heart, lungs, and blood vessels to supply oxygen to the muscles during sustained physical activity, indicative of overall heart health.
Lung Capacity
The maximum amount of air the lungs can hold, vital for respiration and overall health.
Lean Muscle Tissue
Muscle tissue that is relatively low in fat, important for maintaining a healthy weight and improving metabolic rate.
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