Research in Sport Medicine and Technology

In this study, the effects of vibration training on physical fitness factors in elderly
females investigated. 40 subjects with age 61/09±6/24 yrs, weight 65/84±11/98
kg, height 156/99±5/06 cm and body mass index 26/64±4/23 kg/m2 voluntary
participated in this study and were divided in vibration (n=16), non-vibration
(n=14) and control (n=10) groups. The vibration group performed exercises on
the device (JET VIB) for 10 days with 35-40Hz frequency, 12 mm amplitude and
eight positions. The non-vibration group performed the same exercises (in
position, set and time) on the turned off device. The control group did not
exercise during the study. Leg and hand strength (dynamometer), flexibility (sit
and reach), balance (standing time on one leg) and body composition (skinfold
with caliper) were measured. Paired sample t test and one way ANOVA used
for data analysis. In within group analysis, vibration group showed significant
increase in right (p=0/02) and left hand strength (p=0/01), leg strength
(p=0/008), Flexibility (p=0/005) and left leg balance (p=0/006). In non vibration
group just significant increase in right hand strength (p=0/01). There was no
significant change in control group. Between group analysis showed, significant
increase in right (p=0/006) and left hand strength (p=0/003), leg strength
(p=0/004) and left leg balance (p=0/01) in vibration group comparison with to
other groups. There was no significant change in right leg balance (p=0/),
Flexibility (p=0/005) and body composition in any of groups. Due to the results
short term vibration training can improve flexibility, strength and balance in
elderly subjects.
 

Introduction: Whole Body Vibration (WBV) as a new method and supplement for neuromuscular training, cause mechanical stimulation in this system. Propose: The aim of present study was to determine the effect of Whole Body Vibration training (WBVT) on some factors of the physical fitness, growth hormone and IGF-1 concentration in trained girl students. Materials and methods: twenty female of physical education students with a mean and standard deviation of age (21.75 ± 2.2 Yr.), weight (54.25 ± 7.28 kg) and BMI (20.1± 2.44 kg/m2) were selected and randomly divided into two groups: experimental (n=10) and control (n=10). WBVT for 10 days with frequencies 30 Hz and amplitude of 10 mm in six different body positions were performed. Blood samples were collected 24 hours before and after WBVT. Data were analyzed by dependent t test and paired t test. Results: The statistical analysis showed, WBVT lead to significant increase of strength, speed, power, growth hormone and IGF-1 concentrations in experimental group (P<0.05), while agility in this group was not significantly changed (P>0.05). Conclusion: WBV training program can be used as modern training methods and supplements along with other training methods to improve the levels of anabolic hormones and physical fitness factors.