A randomized controlled trial into the cognitive effects of a computer-tailored physical activity intervention in older adults with chronic disease(s)

Table 1 Outcome measures

Measurement Instrument	Concept	Measure	Scoring/ missing items	Scoring range	Higher score indicates	% valid ^a
*Primary outcome measures*
VLT	Verbal memory	Learning curve ratio	(Trial 1 + (Trial 2-Trial 1) + (Trial 3-Trial 2) + (Trial 4-Trial 3) + (Trial 5-Trial 4)) / 5	0–3 words per trial	Better learning capacity	98%
		Mean number of recalled words trial 1–5	(Trial 1 + Trial 2 + Trial 3 + Trial 4 + Trial 5) / 5	0–15 words	Better short-term verbal memory
		Number of words recalled in delayed trial		0–15 words	Better long-term verbal memory
TMT	Shifting	Time to complete part B minus time to complete A in sec		0-∞ sec	Worse shifting capacity	96%
SST	Inhibition	SSRT in ms	The SSRT is estimated in accordance with De Jong et al. [41] and Tannock et al. [42]. Negative SSRT values are excluded from the analyses [43].	0–1500 ms	Worse inhibition	90%
LDST	Processing speed	Number of correct substitutions		0–125 subs	Better processing speed	96%
*Demographic and health characteristics*
ActiGraph GT3X-BT	PA	MVPA minutes per week	Data downloaded with frequency extension on [44]. Valid if worn 4 days during 10 h or more [45]. Non-wear definition by algorithm of Choi et al. [46]. PA scoring by Freedson-VM cut-off points [47] and by Aguilar-Fariaz cut-off points [48].	0–6720 min	More MVPA	96%
		LPA minutes per week		0–10,080 min	More LPA

Abbreviations: VLT verbal learning test, TMT trail making test, SST stop-signal task, LDST letter digit substitution test, PA physical activity, SSRT stop-signal reaction time, MVPA moderate-to-vigorous physical activity, LPA light physical activity. ^a Test outcomes were excluded if scores were deemed invalid by test administer when 1) technical problems occurred, 2) participants refused to complete a test or lacked motivation, 3) participants had physical limitations (arm amputated, hearing loss etc.) or cognitive restrictions (participant is unable to understand the instruction), or 4) participants deviated from the instructions

ISSN: 1861-6909