EFFECT OF CREATINE SUPPLEMENTATION ON UPPER EXTREMITY ANAEROBIC RESPONSE IN FEMALES 836

Abstract

Most oral creatine monohydrate (Cr) research has been focused on lower body strength and power in males. The purpose of this study was to investigate the influence of standard doses of oral Cr on muscular performance during elbow flexion (EF) and shoulder internal rotation (IR) in females. Following written informed consent, 20 females involved in overhand sports were pair-matched on lean body mass,% body fat, height, weight (Wt), and age, and assigned to either placebo (P) (n=10) or Cr (n=10) groups in a randomized, double-blind fashion. Peak concentric (CON) and eccentric (ECC) isokinetic (IK) torque, isotonic (IT) 1RM, and muscular fatigue (FAT) during EF, and IT 1RM, FAT, and peak velocity (V) during IR were evaluated. Following habituation, subjects consumed either P or 25 g Cr/day for 7 days. MANOVAs revealed no significant interaction between P and Cr groups and trial (EF: F(4,15)=4.32, p=0.02; IR: F(3,15)=0.21, p=0.89; Wt: F(1,18)=0.38, p=0.55; mean± SEM below). Table Results suggest Cr supplementation did not influence muscular strength, endurance, or peak velocity during upper extremity work in females.