Table 2.

Training characteristics.

	Authors	Type of Training	Single Session Duration (min)	Repetitions	Frequency/Period	Total Hours
1	Pugnetti et al. (1998)	Navigational training with active and passive conditions + recall landmarks	30	1		30 min
2	Akhutina et al. (2003)	Navigational task	30–60	6–8	within a month	3–8 h
3	Caglio et al. (2012)	Navigational training	90	15	3 times a week for 5 weeks	22.5 h
4	Grewe et al. (2013)	Navigational training + free recall of objects list and positions (at last session)	20	8	daily	2.6 h
5	Kober et al. (2013)	Navigational training + recall up to maximal three different routes	20	6	-	2 h
6	Grewe et al.	Navigational training + free recall of objects list and positions (at last session) + real-life performance	30	8	Every 1–3 days within 2 weeks	4 h
7	Claessen et al. (2015)	Navigational training	60	4	-	4 h
8	Faria et al. (2016)	Navigational training	20	12	4–6 weeks	4 h
9	White & Moussavi (2016)	Navigational training	45	21	3 times a week for 7 weeks	15.75 h
10	Bate et al. (2017)	Navigational training + recall landmarks	60-70	7	Every 3–4 days	7–8 h
11	De La Torre Luque et al. (2017)	Navigational training	20	15	daily	5 h
12	De Luca et al. (2017)	Navigational training + association of object position	45	20	5 times a week for 1 month	15 h
13	Serino et al. (2017)	Navigational training + recall object positions	30	10	3 times a week for 3–4 weeks	5 h
14	De Luca et al. (2018)	Navigational training + association of object position	45	24	3 times a week for 8 weeks	18 h
15	Maresca et al. (2018)	Navigational training	60	36	3 times a week for 12 weeks	36 h
16	Mrakic et al (2018)	Navigational training	45	18	3 times a week for 6 weeks	13.5 h