Research
Hormonal
GH improves exercise capacity in GHD through increased oxygen delivery (cardiac output, blood volume) and substrate availability (fat oxidation), not primarily through increased muscle strength.
GH replacement works by improving how your heart pumps blood and how your body burns fat during exercise, rather than just building bigger muscles.
GoodSupportsHIGH confidence
probably through some combination of increased oxygen delivery to exercising muscle, increased fatty acid availability with glycogen sparing, increased muscle strength, improved body composition, and improved thermoregulation.
Why this rating
Supported by multiple physiological studies cited.
Source
The Growth Hormone/Insulin-Like Growth Factor-I Axis in Exercise and Sport
James Gibney et al. · Endocrine Reviews · 2007
DOI 10.1210/er.2006-0052
narrative_reviewCited 177×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →