Types of falls and strategies for maintaining stability on an unstable surface
Journal Title: Medycyna Pracy - Year 2018, Vol 69, Issue 3
Abstract
Background: Falls constitute an important health issue. They cause significant morbidity, mortality and have marked psychological effects on the individual, too. The aim of this study has been to determine parameters describing human movement strategies for balance and the reaction if balance is lost as a result of an unstable ground, and to attempt to describe the types of falls. Material and Methods: The study group comprised 20 volunteers. Kinematic parameters of falling and dynamic stability were measured using the Vicon Motion System and the Biodex Balance System SD. During the test, subjects stood for 20 s on the tilting platform. The analysis was conducted based on the first recordings, when the participants were not prepared for the event and their reactions were natural. A cluster analysis tool was applied to divide the behavior of people during the test. Results: Based on motion range for kinematic parameters, the cluster analysis revealed 2 types of human behavior: falling (stepping) and restoring balance. Two types of falls were also observed: side and back falls. Moreover, on the basis of angular values for tilting plate, 4 zones were determined. The frequency of access to these zones by each joint revealed 3 strategies to maintain balance: ankle, knee and hip strategy. Conclusions: A set of initial conditions that may be used for future numerical simulations was also determined. Furthermore, the results presented in this study are likely to support the analysis of the effects and the falling patterns. Med Pr 2018;69(3):245–252
Authors and Affiliations
Michalina Błażkiewicz, Ida Wiszomirska, Katarzyna Kaczmarczyk, Andrzej Wit
Keywords
Related Articles
- EP ID EP288318
- DOI 10.13075/mp.5893.00639
- Views 165
- Downloads 0
PRESENTEEISM
Zjawisko nieefektywnej obecności w pracy (prezenteizm), definiowane jako przyjście do pracy pomimo choroby, jest stosunkowo nowym zagadnieniem. Zjawisko to rozważane jest w wielu aspektach – zdrowotnym, społecznym czy wy...
AKTYWNOŚĆ FIZYCZNA DOROSŁYCH MIESZKAŃCÓW KATOWIC A WYBRANE UWARUNKOWANIA ZAWODOWE I SPOŁECZNO-EKONOMICZNE
Wprowadzenie: Problematyka aktywności fizycznej jest często podejmowana w publikacjach, ale nie do końca znane są jej społecznoekonomiczne uwarunkowania. Badania prezentowane w niniejszym artykule nie były wcześniej prow...
MTS-6 detectors calibration by using 239Pu-Be neutron source
Background: Thermoluminescent detectors, type MTS-6, containing isotope 6Li (lithium) are sensitive in the range of thermal neutron energy; the 239Pu-Be (plutonium-and-beryllium) source emits neutrons in the energy range...
PREDICTIVE MODELS FOR THE ASSESSMENT OF OCCUPATIONAL EXPOSURE TO CHEMICALS: A NEW CHALLENGE FOR EMPLOYERS
Employers are obliged to carry out and document the risk associated with the use of chemical substances. The best but the most expensive method is to measure workplace concentrations of chemicals. At present no "measurel...
Adaptation of the Conditions For Work Effectiveness Questionnaire II amongst Polish nurses and midwives
Background: The article presents the Polish adaptation of the Conditions for Work Effectiveness Questionnaire II (CWEQ II), developed by Laschinger et al. The Conditions for Work Effectiveness Questionnaire II measures s...