Alterações eletrolíticas estão correlacionadas com dor muscular 24 horas após exercícios resistidos

Abstract

Resistance exercise is defined when one or more muscle groups receive the application of an external resistance amplifying muscle contraction. However, excessive exertion predisposes to an inflammatory response, late-onset muscle pain (DOMS) and reduced muscle function. Among the mechanisms involved are circulatory changes, production of toxic metabolites, hormonal imbalances and electrolyte changes. However, plasma electrolyte changes of sodium (Na+), potassium (K+), calcium (Ca2+) and magnesium (Mg2+) during and shortly after resistance exercises need to be investigated better. Thus the present research aimed to study the electrolytic alterations after resisted exercise and correlate them with DOMS. Hemoglobin, lipid profile, glucose, lactate, electrolytes (Na+, K+, Ca2+ and Mg2+), baseline, immediately and 30 minutes after the exercise session (extensor chair, squatting and leg press) after the resistance exercise. DOMS was assessed 24 hours after the sessions. Plasma concentrations of Na+ and K+ were correlated immediately (r = -0.511, p = 0.021) and 30min (r = -0,455; p = 0.049) after resistance exercise. Ca2+ and Mg2+ did not change during the study. The concentrations of Na + immediately after ER correlate with DOMS assessed 24 hours, indicating that volunteers with lower Na + changes after exercise had higher DOMS.