Vibration analysis in the diagnosis of bone mineral density in healthy and osteopenic radius bone and its correlation to muscle strength

Download

index.pdf

Date

2004

Author

Özdurak, Rabia Hürrem

Metadata

Show full item record

Item Usage Stats

135
views

40
downloads

Muscle strength is assumed to be closely related with BMD, the so called determinant of bone strength, however, new methods for bone strength measurement are arising. The purpose of this study was to determine the relationship between bone mineral density (BMD), muscle strength and natural frequency of the radius in the dominant and non-dominant arm in healthy and osteopenic individuals aged between 50-70 years. Sixty sedentary male (thirty healthy and thirty osteopenic) participated this study. Bone mineral density assessment was performed by dual x-ray absorbtiometry (DEXA) and quantitative computed tomography (QCT), whereas muscle strength was measured by an isokinetic dynamometer quantitatively. Natural frequency of the radius was determined by a dual channel frequency analyzer. Differences between BMD, muscle strength and natural frequency in healthy and osteopenic participants according to dominancy were examined by Analysis of Variance (ANOVA). Pearson Product Correlation Coefficient test was conducted to determine the magnitude of the correlation between cortical, trabecular and average BMD, muscle strength and natural frequency. Results demonstrated a statistically significant difference between BMD, natural frequency and muscle strength in the dominant arm of both groups. There was also a significant difference in the non-dominant arm in terms of BMD, natural frequency and muscle strength, except in total work in the non-dominant arms. Moreover, there was a moderate positive correlation between BMD measured by DEXA and natural frequency in the dominant arm (r = ,59; p < .001) and non-dominant arm (r = 0,64; p < 0.001), whereas the muscle strength was correlated to BMD with a low positive correlation in terms of peak torque in extension (r = ,36; p = ,005), peak torque in flexion (r = ,31; p = ,016), total work in extension (r = ,28; p = ,030) and total work

Subject Keywords

The Skeleton., Osteology.

URI

http://etd.lib.metu.edu.tr/upload/12605109/index.pdf
https://hdl.handle.net/11511/14250

Collections

Graduate School of Social Sciences, Thesis

Suggestions

OpenMETU
Core

Seismic energy dissipation in deteriorating systems through low-cycle fatigue Erberik, Murat Altuğ; Sucuoğlu, Haluk (Wiley, 2004-01-01) Energy dissipation characteristics of structural members which exhibit both strength and stiffness deterioration under imposed displacement reversals are investigated. In the experimental part, 17 reinforced concrete beam specimens were tested under constant and variable amplitude inelastic displacement cycles. The constant-amplitude tests were employed to determine the low-cycle fatigue behaviour of specimens where the imposed displacement amplitude was the major variable. A two-parameter fatigue model was...
Prediction of failure mode in weak rock slopes using fuzzy slope mass rating Yardımcı, Ahmet Güneş; Karpuz, Celal (null; 2020-01-01) Stability of weak rock slopes are threatened by structurally controlled mechanisms or mass failure. Shallow depth lignite beds are commonly exploited by surface mining. Preliminary slope stability analysis is carried out by practical tools that perform quick stability investigation with limited data. Kinematical analysis is a widely used method that requires orientational data and the rock mass friction angle. However, geological or mechanical features of the rock mass are disregarded. Slope Mass Rating (SM...
Vibration measurements predict the mechanical properties of human tibia Bediz, Bekir; Özgüven, Hasan Nevzat; Korkusuz, Feza (Elsevier BV, 2010-05-01) Background: Vibration analysis is a promising technique in diagnosing metabolic bone diseases such as osteoporosis and monitoring fracture healing. The aim of this study is to observe the structural dynamic property changes of the tibia extracted from the vibration analysis data.
Experimental Investigation of Crack Propagation Mechanisms in Commercially Pure Aluminium Plates Tekoğlu, C.; Çelik, Ş.; Duran, H.; Efe, M.; Nielsen, K.L. (Elsevier BV; 2019) The crack surface morphology in tearing of ductile metal plates depends on the mechanical properties, chemical composition and the microstructure of the plate material as well as on the loading conditions and the specimen geometry. This study assesses the crack surface morphologies observed in commercially pure aluminium plates (Al 1050 H14). Mode I tearing was performed in both single and double edge notched tensile test setups with specimens cut from five different plates with different thickness t, viz. ...
Plyometric Training in Normobaric Hypoxia improves Jump Performance Coşkun, Betül ; Aras, Dicle ; Akalan, Cengiz ; Koçak, Mehmet Settar; Hamlin, Michael J. (2021-12-01) Strength training in hypoxia has been shown to enhance hypertrophy and function of skeletal muscle, however, the effects of plyometric training in hypoxia is relatively unknown. Therefore, this study aimed to examine the effects of plyometric training in hypoxia compared to normoxia on body composition, sprint and jump parameters. Twenty-three male physical education students (20.4 +/- 2.0 years, mean +/- SD) participated in the study and were divided into a plyometric training in hypoxia (PTH, n=8), plyome...

Citation Formats

R. H. Özdurak, “Vibration analysis in the diagnosis of bone mineral density in healthy and osteopenic radius bone and its correlation to muscle strength,” M.S. - Master of Science, Middle East Technical University, 2004.