Dose-Response Association between Exercise Intensity and Manual Motor Performance in Individuals with Down Syndrome: a Preliminary Study

C. C.J.J. Chen, Shannon Ringenbach

Research output: Contribution to journalArticle

Abstract

This study was aimed at investigating the dose-response relationship between acute exercise and its effects on manual motor control mediated by the intensity of exercise in individuals with Down syndrome (DS). Participants were randomized into vigorous-intensity exercise (i.e., 75–85% of predicted MaxHR), moderate-intensity exercise (i.e., 50–75% of predicted MaxHR) or control groups. The exercise groups performed an incremental walking protocol on the treadmill and the control group watched a video for 20-min. Measures of grip strength and manual dexterity were tested pre- and post- intervention. A quadric trend was seen in grip strength, such that the moderate-intensity exercise was beneficial for grip force production. However, inconsistent with previous studies, neither a quadric trend nor a linear trend was evident in the performance of the Purdue Pegboard Test. Thus, a large sample size and brain imaging measures are needed to explore the underlying mechanisms involved in individuals with DS.

Original languageEnglish (US)
Pages (from-to)299-311
Number of pages13
JournalJournal of Developmental and Physical Disabilities
Volume31
Issue number3
DOIs
StatePublished - Jun 15 2019

Keywords

  • Does-response relationship
  • Exercise
  • Intellectual disabilities
  • Muscular strength

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Developmental and Educational Psychology

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