Comparing four resistance training models with emphasis on frequency on body composition, muscle strength and circumference in trained women

Poster Presentation
Paper ID : 1159-12THCONG
Oral / Poster Presentation File: 1159.JPG.JPG 
1excercise physiology department, faculty of physical education and sport sciencses, university of guilan, rasht, guilan, iran
2exercise physiology Dep, faculty of exercise scinces, University of guilan, rasht, guilan, iran
The aim of present study was investigating the effect of four resistance training models with emphasis on frequency on body composition, muscle strength and muscle circumference in young trained women.
28 young trained students with age (23.241.64y), BMI (24.212.44 kg/m2) and body fat percent (26.73 3.27) were volunteered to participate in this study. Subjects were randomly divided to four resistance training programs including one to four sessions per week (F1, F2, F3, F4) for eight subsequent weeks. Measurement were carried out before and 24 hours after the last training session: Body composition variables including limb circumferences (arm, shin, Thigh), fat percent (triceps, abdominal, thigh) and upper and lower muscular strength in bench and leg press (Berzycki), were measured. Resistance training load started at 60% of 1RM and reached 80% of 1RM at 8th week. lnterset and lntraset resting periods respectively considered 60-180 and 60 sec with a tempo of 1:2 sec for all groups. Normal distribution of data were determined using Shapiro-Wilk test. One-way analysis of variance (2×4) was used to determine significant differences among groups. In the event of a significant F ratio, Bonferroni Post hoc test were used for pairwise comparisons. A criterion level of p< 0.05 was used to determine statistical significance.
Results showed that after eight weeks of training all groups showed a significant increase in strength of upper and lower extremities while no significant differences observed between groups. Neither body composition nor the anthropometric variables showed significant difference after 8 weeks of resistance training between groups.
According to the results of current study, all training groups showed a significant increase in strength, despite four different training frequency. Therefore, increased strength may occur independently of the number of training sessions, probably because of the lack of control over the training volume which was performed intentionally to mimic the actual volume corresponding to the numbers of training sessions.