Comparison of Muscle Activity in Young People and Seniors During Hip Adduction and Abduction Movements According to Backrest Angle

  • Juyoung NaEmail author
  • Jaesoo HongEmail author
  • KwangTae JungEmail author
  • ByeongHee WonEmail author
  • JongHyun KimEmail author
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 818)


The purpose of this study was to analysis patterns of changes in muscle activity and subjective assessment at various backrest angles during lower-limb rehabilitative exercises across different age groups to determine the appropriate backrest angles during exercise. Elderly people experience difficulties in normal walking due to their reduced muscle strength, balance, and flexibility caused by aging. Although equipment has been developed for muscle strengthening and rehabilitative exercises, studies on exercise postures and chair backrests are relatively insufficient. In this study, participants performed hip adduction and abduction rehabilitative exercises. Electromyogram test and a subjective questionnaire survey were conducted for 15 healthy adults in their 20s and 4 healthy elderly persons aged 65 years or older. Differences in muscle activity level according to backrest angle were observed. A significant difference in angle preference was found between young and old participants (p < 0.05). Results of this study may be used as ergonomic data to develop rehabilitative exercise equipment.


Backrest angle Rehabilitation Exercise posture 


  1. 1.
    Era P, Lyyra AL, Viitasalo JT, Heikkinen E (1992) Determinants of isometric muscle strength in men of different ages. Eur J Appl Physiol Occup Physiol 64(1):84–91CrossRefGoogle Scholar
  2. 2.
    Frontera WR, Hughes VA, Lutz KJ, Evans WJ (1991) A cross-sectional study of muscle strength and mass in 45-to 78-yr-old men and women. J Appl Physiol 71(2):644–650CrossRefGoogle Scholar
  3. 3.
    Häkkinen K, Häkkinen A (1991) Muscle cross-sectional area, force production and relaxation characteristics in women at different ages. Eur J Appl Physiol Occup Physiol 62(6):410–414CrossRefGoogle Scholar
  4. 4.
    Bottomely JM, Lewis CB (2004) Geriatric rehabilitation: a clinical approach, 2nd ednGoogle Scholar
  5. 5.
    James B, Parker AW (1989) Active and passive mobility of lower limb joints in elderly men and women. Am J Phys Med Rehabil 68(4):162–167CrossRefGoogle Scholar
  6. 6.
    Kramer JF, Vaz MD, Vandervoort AA (1991) Reliability of isometric hip abductor torques during examiner-and belt-resisted tests. J Gerontol 46(2):M47–M51CrossRefGoogle Scholar
  7. 7.
    Prud’homme G, Alexander L, Orme S (2018) Management of urinary incontinence in frail elderly women. Obstet Gynaecol Reprod Med 21:281Google Scholar
  8. 8.
    Himann JE, Cunningham DA, Rechnitzer PA, Paterson DH (1988) Age-related changes in speed of walking. Med Sci Sports Exerc 20(2):161–166CrossRefGoogle Scholar
  9. 9.
    Corlett EN, Eklund JAE (1984) How does a backrest work? Appl Ergon 15(2):111–114Google Scholar
  10. 10.
    Carcone SM, Keir PJ (2007) Effects of backrest design on biomechanics and comfort during seated work. Appl Ergon 38(6):755–764CrossRefGoogle Scholar
  11. 11.
    Shibata N, Maeda S (2010) Determination of backrest inclination based on biodynamic response study for prevention of low back pain. Med Eng Phys 32(6):577–583CrossRefGoogle Scholar
  12. 12.
    Shields RK, Cook TM (1988) Effect of seat angle and lumbar support on seated buttock pressure. Phys Ther 68(11):1682–1686CrossRefGoogle Scholar
  13. 13.
    Vos GA, Congleton JJ, Moore JS, Amendola AA, Ringer L (2006) Postural versus chair design impacts upon interface pressure. Appl Ergon 37(5):619–628CrossRefGoogle Scholar
  14. 14.
    Brattgård SO, Lindström I, Severinsson K, Wihk L (1983) Wheelchair design and quality. Scand J Rehabil Med Suppl 9:15Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Biomedical System & Technology GroupKorea Institute of Industrial TechnologyCheonanKorea
  2. 2.Department of Industrial Design EngineeringKOREATECHCheonanKorea

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