Even though your muscles get a signal to slow down energy use after lifting weights, they still keep building protein—like your body’s repair crew is ignoring the ‘slow down’ sign because the ‘build up’ signal is stronger.

In healthy human subjects, measure AMPK activity and muscle protein synthesis rates via stable isotope labeling at 0, 30, 60, and 90 minutes after a standardized resistance exercise session, while simultaneously quantifying phosphorylation of Akt, mTOR, and S6K1 in muscle biopsies.

Determine whether blocking AMPK activity during recovery from resistance exercise enhances muscle protein synthesis, thereby testing if AMPK normally suppresses it.

Test whether knocking down AMPK in human skeletal muscle cells allows sustained mTOR/S6K1 activation and protein synthesis under energy stress conditions mimicking post-exercise recovery.

Correlate natural variation in post-exercise AMPK activation with muscle protein synthesis rates and anabolic signaling in trained individuals over multiple sessions.

Determine if muscle-specific AMPK knockout mice show enhanced post-exercise muscle protein synthesis compared to wild-type, confirming AMPK’s inhibitory role.