title: NUCLEAR MAGNETIC RESONANCE STUDIES OF LIVING MUSCLE.
abstract: Measurements of nuclear magnetic relaxation times for protons of water in living skeletal frog muscle show the transverse relaxation time, T(2), increases when a muscle contracts isometrically. This result and other experimental data suggest that a fraction of the intracellular water molecules have restricted rotational freedom and that this fraction decreases when contraction occurs.
mesh_terms: D000818:Animals; D001001:Anura; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D009119:Muscle Contraction; D018482:Muscle, Skeletal; D009132:Muscles; D010827:Physiology; D011522:Protons; D011898:Ranidae; D012106:Research; D013057:Spectrum Analysis; D014867:Water
chemical_list: D011522:Protons; D014867:Water
keywords: EXPERIMENTAL LAB STUDY; FROGS; MUSCLE CONTRACTION; MUSCLES; NUCLEAR MAGNETIC RESONANCE; PHYSIOLOGY; SPECTRUM ANALYSIS