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Exercise tolerance test. Single-sample screening technique to rule out growth-hormone deficiency
JAMA
|August 18, 1978
Summary
Vigorous exercise can screen for growth hormone deficiency in short children. This safe, cost-effective method avoids most provocative tests, accurately identifying adequate growth hormone release.
Area of Science:
- Pediatric Endocrinology
- Growth Hormone Physiology
- Diagnostic Screening
Background:
- Short stature in children necessitates evaluation of pituitary growth hormone release.
- Pharmacologic provocative testing is the standard but can be invasive and resource-intensive.
Purpose of the Study:
- To evaluate parent-directed vigorous exercise as a screening tool for growth hormone deficiency.
- To determine the reliability and safety of exercise as a diagnostic method.
Main Methods:
- 57 short-statured children underwent parent-directed vigorous exercise after an 8- to 12-hour fast.
- Serum growth hormone levels were measured from a single postexercise venous sample.
Main Results:
- 92% of euendocrine children showed adequate growth hormone levels post-exercise.
- The exercise test obviated the need for pharmacologic testing in most participants.
- Only four children were identified with confirmed growth hormone deficiency.
Conclusions:
- Vigorous physical exercise is a reliable, safe, and cost-effective screening test for growth hormone deficiency.
- This method significantly reduces the need for traditional provocative testing in short-statured children.