Advertisement

A Study on Effects of Muscle of Lower Limb Associated with Whole-Body Vibration

  • Shih-Yi Lu
  • Xiang-An Cheng
  • Yen-Hui Lin
  • Cheng-Lung Lee
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 820)

Abstract

Long-term exposure to whole-body vibration in the workplace will increase the chances of lower back pain, spinal disc herniation, and other diseases. However, many studies have also indicated that vibration stimulation, often used in physical therapy, clinical treatment, and muscle strength training, has a variety of positive effects for the human body.

A commercially available electric vibrating machine was chosen, and 20 subjects were recruited to statically stand on the vibration platform with knee flex at different angles (0o, 60o, 90o), and to dynamically stand (squatting and rising) on the platform, while being exposed to different vibration frequencies (0 Hz, 20 Hz, 35 Hz, 50 Hz). The experiment used surface electromyography to assess the effects of posture and frequency on the neuromuscular activation. Each subject was asked to rate the perceived exertion on three monitored muscles (gastrocnemius, rectus femoris, vastus lateralis).

The results showed that the knee flex angle had a significant effect on the muscles of the lower limbs, especially the thigh muscles, which were regarded as the support for body weight, and that the most obvious impact on the lower limb muscles was on the calf muscles during whole-body vibration. Surface EMG signals detected in dynamic posture were generally higher than those in static posture; however, through the subjective perception and assessment of subjects, we found that the scores of the two situations were quite close. The study results showed that the higher-frequency vibration activated muscles more easily. However, excessive fatigue would also result in injuries, a cause for caution and care.

Keywords

Whole-body vibration EMG Muscle fatigue Lower limb 

References

  1. 1.
    Bovenzi M (1996) Low back pain disorders and exposure to whole-body vibration in the workplace. Semin Perinatol 20(1):38–53CrossRefGoogle Scholar
  2. 2.
    Seidel H (1993) Selected health risks caused by long term whole body vibration. Am J Ind Med 23:589–604CrossRefGoogle Scholar
  3. 3.
    Bovenzi M, Hulshof CTJ (1999) An updated review of epidemiologic studies on the relationship between exposure to whole-body vibration and low back pain. Int Arch Occup Environ Health 72:351–365CrossRefGoogle Scholar
  4. 4.
    Lings S, Leboeuf-Yde C (2000) Whole-body vibration and low back pain: a systematic, critical review of the epidemiological literature 1992–1999. Int Arch Occup Environ Health 73:290–297CrossRefGoogle Scholar
  5. 5.
    Prisby RD, Lafage-Proust MH, Malaval L, Belli A, Vico L (2008) Effects of whole body vibration on the skeleton and other organ systems in man and animal models: what we know and what we need to know. Ageing Res Rev 7:319–329CrossRefGoogle Scholar
  6. 6.
    Cardinale M, Wakeling J (2005) Whole body vibration exercise: are vibrations good for you? Br J Sports Med 39(9):585–589CrossRefGoogle Scholar
  7. 7.
    Agnès PT, Greet V, Gijs H, Maija LY, Isabella B, Jorge C (2012) Fifth European Working Conditions Survey. Publications Office of the European Union, Luxembourg, EurofoundGoogle Scholar
  8. 8.
    Cifrek M, Medved V, Tonković S, Ostojić S (2009) Surface EMG based muscle fatigue evaluation in biomechanics. Clin Biomech 24:327–340CrossRefGoogle Scholar
  9. 9.
    Chesler NC, Durfee WK (1997) Surface EMG as a fatigue indicator during FES-induced isometric muscle contractions. J Electromyogr Kinesiol 7(1):27–37CrossRefGoogle Scholar
  10. 10.
    Luttmann A, Jager M (1996) Joint analysis of spectrum and amplitude (JASA) of electromyograms applied for the indication of muscular fatigue among surgeons in urology. In: Advances in occupational ergonomics and safety, vol 1, pp 523–528Google Scholar
  11. 11.
    Kroemer KH, Grandjean E (1997) Fitting the task to the human. A textbook of occupational ergonomics, 5th edn. CRC Press, Boca RatonGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Chung Shan Medical UniversityTaichungTaiwan, ROC
  2. 2.Chaoyang University of TechnologyTaichungTaiwan, ROC

Personalised recommendations