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Perspectives in Rehabilitation

Bipedal hopping as a new measure to detect subtle sensorimotor impairment in people with multiple sclerosis

ORCID Icon, ORCID Icon & ORCID Icon
Pages 1544-1555 | Received 29 Apr 2020, Accepted 03 Sep 2020, Published online: 21 Sep 2020
 

Abstract

Background

Bipedal hopping has the potential to detect subtle multiple sclerosis (MS)-related impairments, especially among patients who “pass” typical movement tests. In this narrative review, we outline the biomechanics of bipedal hopping and propose its usefulness as a novel outcome measure for people with MS having mild disability.

Methods

We summarize articles that (1) examined the biomechanics of jumping or hopping and (2) tested the validity and/or reliability of hopping tests. We consolidated consistencies and gaps in research and opportunities for future development of the bipedal hop test.

Results

Bipedal hopping requires immense power, coordination, balance, and ability to reduce co-contraction; movement components typically affected by MS. These impairments can be measured and differentiated by examining specific variables, such as hop length (power), symmetry (coordination), center of pressure (balance), and coefficient of variability (co-contraction/spasticity). Bipedal hopping challenges these aspects of movement and exposes sensorimotor impairments that may not have been apparent during walking.

Conclusions

Testing of bipedal hopping on an instrumented walkway may detect and monitor sensorimotor control in people with MS who do not currently present with clinical deficits. Early measurement is imperative for precise rehabilitation prescription to slow disability progression prior to onset of measurable gait impairment.

    Implications for rehabilitation

  • Jumping and hopping tests detect lower limb and balance impairments in children, athletes, and older adults.

  • Bipedal hop test measures multiple domains: power, coordination, balance, and muscle timing.

  • Bipedal hop test may expose subtle sensorimotor impairments in people with multiple sclerosis.

  • Multiple variables measured can discern type of sensorimotor impairment to direct personalized rehabilitation programs.

Disclosure statement

The authors report no conflicts of interest.

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