Authors
- Samaneh Mirzaee
- Noreddin Karimi
- Fereshteh Ghorat
- Robab Sahhaf
- Ali Samadi
- Mostafa Rahimi
- Mostafa Gholi Saberian
Abstract
Background: The aim of this study was to evaluate the short-term effects of creatine supplementation in combination with vibration exercise on physical fitness and neuromuscular performance of elderly women.
Materials and Methods: The study population included women aged over 60 years. For this purpose, 22 healthy elderly females were selected and randomly divided into three groups: vibration exercise with creatine supplementation (n=8), vibration exercise with placebo (n=7), and control (n=7) groups. Vibration exercise with creatine supplementation group, performed exercises which included six posture exercises, based on the principle of overload, for 10 days, with a frequency of 30-35 Hz and amplitude of 5 mm; and at the same time, received 20 grams creatine, for the first 5-day, and 5 grams creatine, for the later 5-day, daily. Vibration exercise with placebo group, instead of creatine, received dextrose. Evaluation factors were the static strength of hands and feet (dynamometer), the dynamic power of leg (knee open device), the static balance (standing on one leg), and dynamic balance (lifted and walking), the lower body performance (30 meters walk, tandem gate and get up and sit on a chair), and flexibility (sit and delivery). ANOVA and analysis of covariance statistical tests were used to examine the main effects; and post hoc Tukey and Sidak tests, were used to compare pairs of groups (P≤0.05).
Results: The results of ANOVA showed that there was no significant difference between the groups in the static power (P=0.89), lower body function in tandem gate test (P=0.25), and flexibility (P=0.59); but the static power and performance of leg in 30-meter walk test, was better in vibration exercise with creatine supplementation group than the control group (P
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