AGE

, Volume 36, Issue 2, pp 893–898

Comparison of explosive force between young and elderly women: evidence of an earlier decline from explosive force

  • Ludmila Schettino
  • Carla Patrícia Novais Luz
  • Leandra Eugênia Gomes de Oliveira
  • Paula Lisiane de Assunção
  • Raildo da Silva Coqueiro
  • Marcos Henrique Fernandes
  • Lee E. Brown
  • Marco Machado
  • Rafael Pereira
Article

DOI: 10.1007/s11357-013-9612-1

Cite this article as:
Schettino, L., Luz, C.P.N., de Oliveira, L.E.G. et al. AGE (2014) 36: 893. doi:10.1007/s11357-013-9612-1
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Abstract

The aging process causes many changes in muscle strength, and analysis of explosive force from handgrip strength seems to be useful and promising in studying the aging musculoskeletal system. Therefore, the purpose of this study was to investigate if explosive force parameters [rate of force development (RFD) and contractile impulse (CI) over the time interval of 0–200 ms from the onset of contraction] during handgrip efforts decline differently than maximum handgrip strength with increasing age. Twenty healthy young women (20–27 years) and 65 healthy elderly women, assigned into three age groups (50–64, 65–74, and 75–86 years), participated in this study. All participants performed two maximal grip attempts. Handgrip data were recorded as force–time curves, peak force, and explosive force parameters. Our results revealed that peak force decreased significantly (p < 0.05) for those who are 65 years old, while explosive force parameters decreased significantly (p < 0.05) for those aged 50 years. These data indicate that the decline in explosive grip force-generating capacity may begin earlier (i.e., for those aged 50 years old) than peak force during the aging process. Our findings suggest that the aging process reduces the explosive grip force-generating capacity before affecting peak force.

Keywords

AgingGrip strengthMuscle strengthSkeletal muscle

Copyright information

© American Aging Association 2013

Authors and Affiliations

  • Ludmila Schettino
    • 1
    • 2
  • Carla Patrícia Novais Luz
    • 1
  • Leandra Eugênia Gomes de Oliveira
    • 1
  • Paula Lisiane de Assunção
    • 3
  • Raildo da Silva Coqueiro
    • 3
  • Marcos Henrique Fernandes
    • 2
    • 3
  • Lee E. Brown
    • 4
  • Marco Machado
    • 5
    • 6
  • Rafael Pereira
    • 1
  1. 1.Research Group in Neuromuscular Physiology, Department of Biological SciencesState University of Southwest Bahia (UESB)JequieBrazil
  2. 2.Postgraduate Program in Nursing & HealthState University of Southwest Bahia (UESB)JequieBrazil
  3. 3.Department of HealthState University of Southwest Bahia (UESB)JequieBrazil
  4. 4.Center for Sport Performance, Department of KinesiologyCalifornia State UniversityFullertonUSA
  5. 5.Laboratory of Physiology and BiokineticsUNIGItaperunaBrazil
  6. 6.Laboratory of Human Movement StudiesUniversity Foundation of ItaperunaItaperunaBrazil