The Effects Of Whole Body Vibrations On Salivary Cortisol In Young Females In Squat Position

<p>Purpose: Despite the catabolic effect of cortisol on bone metabolism, and the potentially counteracting anabolic effect of whole body vibration (WBV) on bone, only a few studies have explored the effects of WBV on cortisol, the findings of which have</p> <p>been inconclusive. Therefore, the purpose of this study was to determine the effect of an acute bout of WBV on salivary cortisol levels in women. Method: This study utilized a randomized cross-over design, consisting of two individual treatment days: the vibration</p> <p>intervention (V) and the non-vibration control (NV), with a washout period of 2-3 days between the two. Participants consisted of a convergence sample 12 women (19 to 30 yrs. old) with varying levels of physical activity. WBV consisted of a 30-sec bout of isometric</p> <p>squatting with 1100 knee flexion followed by 30-sec rest. WBV parameters were set to a frequency of 30 HZ and an amplitude of 4 mm. Saliva was sampled both before and immediately after exposure to each of the conditions. Differences between pre- and posttest values for each condition were compared using a paired samples t-test. Significance was set at p < 0.05; with a 95% confidence interval.</p> <p>Results: paired-samples t-tests for both the experimental and the control group showed no significant difference between pre- and post-test data (t (13) = 0.154, p = 0.88, and t (13) = -11.314, p =0.451). Discussion: The main finding of this study was that an</p> <p>acute bout of WBV did not appear to have a significant influence on salivary cortisol. It may have been that the chosen volume of WBV was inadequate to provide a significant stimulus to result in an endocrine response. Future WBV research should be focused on determining the optimal workload needed to induce hormonal changes in both women and men.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Kinesiology & Public Health Education

Year

2014

Author dc:creator

• Gawande, Rohini

Contributors dc:contributor

• Joshua Guggenheimer

• SALIVARY CORTISOL, SQUAT POSITION, WHOLE BODY VIBRATIONS, YOUNG FEMALES

Repository record dc:identifier

https://commons.und.edu/theses/1535

OAI identifier oai:identifier

oai:commons.und.edu:theses-2536