Research PaperReliability and convergent validity of the 6-min run test in young adults with Down syndrome
Section snippets
Participants
Participants were recruited from two DS associations located in a region of the Spanish northwest. A purposive sample of 51 young adults (27 female, 24 male; age range 19–47 years old) was invited to take part in the study. They were required to meet the following inclusion criteria: (a) presenting trisomy 21; (b) being over 18 years old; (c) not attesting any gross visual or organic defect; and (d) being able to follow simple instructions. Participants who showed associated motor or sensory
Results
All participants completed the tests and no serious or adverse events were observed during performance. Mean values of the fundamental variables of this study are presented in Table 1. The sample was composed mainly of young adults with DS, in which 5.8% of the participants were older than 39. More than half were overweight (54.9%) and almost one third obese (29.4%). Obese participants showed lower mean peak HR values and achieved shorter distances both in the SMRT test and retest (Fig. 1).
Discussion
This study attempted to identify the level of reliability shown by the SMRT and to provide information about its convergent validity when administered to adults with DS. Given the scarcity of cardiorespiratory fitness field based tests whose psychometric properties have been analyzed in adults with DS, a confirmation of the usefulness of new tests which prove to be adequate for these populations is a relevant fact for a number reasons.18 Firstly, because it is not infrequent to find studies
Conclusions
The results of this study indicate that SMRT shows high test/retest reliability and moderate to moderately high convergent validity when performed by adults with DS. Further studies aimed at identifying the criterion-related validity of this test for these populations seem to be called for.
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Disclosures: Any disclosures of financial interest to declare.
Conflict of interest: All the three authors have no conflicts of interest to declare.