10-m Shuttle Ride Test in Youth With Osteogenesis Imperfecta Who Use Wheelchairs: Feasibility, Reproducibility, and Physiological Responses

Bart C. Bongers; Ester B.G. Rijks; Arjan G.J. Harsevoort; Tim Takken; Marco van Brussel

doi:10.2522/ptj.20150082

Figures

Figure.

Bland-Altman plot of the reached stage during the first and second 10-m Shuttle Ride Tests (SRiTs). A difference in reached stage (y axis) >0 indicates a better test score at the second SRiT, whereas a difference in reached stage <0 represents a better test score at the first SRiT. The numbers above each marker represent participant numbers, which correspond to those in Table 1.

Tables

Table 3.

Physiological Responses to the SRiT (n=s13)^{^a}

↵^a Values are presented as mean±SD. CI=confidence interval, HRpeak=heart rate at peak exercise, bpm=beats per minute, ICC=intraclass correlation coefficient, NA=not applicable, NS=not statistically significant, O₂ pulse=oxygen pulse, RERpeak=respiratory exchange ratio at peak exercise, Spo₂peak=peripheral measured oxygen saturation at peak exercise, SRiT=10-m Shuttle Ride Test, V̇epeak=minute ventilation at peak exercise, V̇e/V̇co₂ slope=minute ventilation-to-carbon dioxide production relationship, V̇e/V̇o₂ slope=minute ventilation to oxygen uptake production relationship, V̇o₂peak=oxygen uptake at peak exercise, ΔVAS=visual analog scale for the rating of perceived exertion (posttest VAS minus pretest VAS).
^b 95% confidence interval of the difference between the means.
^c n=12, heart rate was not determinable in 1 participant.
^d n=11, invalid respiratory gas analysis measurements in 2 participants.
^e n=10, invalid respiratory gas analysis measurements in 3 participants.
^f n=10, invalid respiratory gas analysis measurements in 2 participants, and the ventilatory threshold was not determinable in 1 participant.
^g Wilcoxon signed rank test.
^h Not applicable, Wilcoxon signed rank test.
ⁱ n=9, invalid respiratory gas analysis measurements in 3 participants, and heart rate was not determinable in 1 participant.
^j n=12, oxygen saturation was not determinable in 1 participant.

Table 2.

Reproducibility Statistics for the 10-Minute Shuttle Ride Test (n=13)^{^a}

↵^a ICC=intraclass correlation coefficient, CI=confidence interval, LoA=limits of agreement, SDD=smallest detectable difference, SEM=standard error of measurement.

Table 1.

Clinical Characteristics of the Participants (n=13)^{^a}

↵^a ADL=activities of daily living, BMD=bone mineral density, BMI=body mass index, NA=not applicable, OI=osteogenesis imperfecta.
^b Modified Bleck scale according to Engelbert et al.¹⁵
^c z score based on Wind et al.¹⁷
^d Undeterminable due to rodding for scoliosis.

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10-m Shuttle Ride Test in Youth With Osteogenesis Imperfecta Who Use Wheelchairs: Feasibility, Reproducibility, and Physiological Responses

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