Table 2.
Study | Design | Intervention conditions | Sample | Cognitive measures | Cognitive task results after training |
---|---|---|---|---|---|
Rosen et al. [14] | RCT double-blind | Auditory processing training Computer-based activities |
COT MCI CCI MCI | RBANS scores | NS |
RBANS immediate memory COT MCI > CCI MCI | p = 0.027; Cohen's d = 1.38 | ||||
| |||||
Belleville et al. [17] | CGT single–blind | Mnemonic strategy training | COT HC COT MCI | Word list recall MCI = HC | p < 0.05, η2 = 0.21 |
MCI < HC | p < 0.05, η2 = 0.16 | ||||
Word list Immediate recall MCI = HC | p < 0.001; η2 = 0.73 | ||||
Performance on FMRI scan MCI = HC | p < 0.01, η2 = 0.23 | ||||
| |||||
Hampstead et al. [18] | Case control | Face name Association strategy | COT MCI TS US | Post fMRI scan recognition task TS = US | p = 0.001 |
TS > US | p = 0.002 | ||||
Reaction time TS | p = 0.04 | ||||
| |||||
Hampstead et al. [20] | RCT single blind | Object location Association training Stimuli Exposition | COT HC COT MCI CCI HC CCI MCI | Object location Recognition task TS-COT group > CCI group | p = 0.026, pη2 = 0.155 |
TS-HC > MCI | p < 0.001, pη2 = 0.343 | ||||
US-HC > MCI | p < 0.001, pη2 = 0.314 | ||||
| |||||
Balardin et al. [21] | CGT single blind | Semantic encoding strategy training | COT HC CCI MCI | Word list free Recall HC > MCI | p = 0.001 |
MCI = HC | p < 0.001 | ||||
SR > UR | p < 0.001 | ||||
Semantic cluster HC = MCI | p = 0.272 | ||||
p < 0.001 | |||||
Mean number of clusters MCI < HC | p = 0.047 | ||||
| |||||
Lin et al. [15] | RCT single blind | Visual speed of processing and attention training Computer-based activities | COT MCI CCI MCI | UFV-reaction time COT MCI > CCI MCI | p = 0.02, η2 = 0.26 |
Working memory COT MCI > CCI MCI | p = 0.01, η2 = 0.28 | ||||
Cognitive control COT MCI > CCI MCI | p = 0.03, η2 = 0.21 | ||||
Verbal fluency | NS | ||||
IADL completion time | NS | ||||
| |||||
De Marco et al. [16] | RCT single blind | Cognitive training Social engagement | COT MCI CCI MCI | CCRI | NS |
RCT: randomized controlled trial; CGT: controlled group trial; COT: cognitive oriented treatment; CCI: control condition intervention; MCI: mild cognitive impairment; HC: healthy controls; TS: trained stimulus; US: untrained stimulus; SR: semantic related; UR: unrelated; UVF: used field of view; IADLs: instrumental activities of daily living; CCRI: cognitive change ratio index; p: p values; η2: eta-squared; η2: partial eta-squared; NS: not significant results.