Abstract
Introduction
A recent interesting field of application of telemedicine/e-health involved smartphone apps. Although research on mHealth began in 2014, there are still few studies using these technologies in healthy elderly and in neurodegenerative disorders. Thus, the aim of the present review was to summarize current evidence on the usability and effectiveness of the use of mHealth in older adults and patients with neurodegenerative disorders.
Methods
This review was conducted by searching for recent peer-reviewed articles published between June 1, 2010 and March 2023 using the following databases: Pubmed, Embase, Cochrane Database, and Web of Science. After duplicate removal, abstract and title screening, 25 articles were included in the full-text assessment.
Results
Ten articles assessed the acceptance and usability, and 15 articles evaluated the efficacy of e-health in both older individuals and patients with neurodegenerative disorders. The majority of studies reported that mHealth training was well accepted by the users, and was able to stimulate cognitive abilities, such as processing speed, prospective and episodic memory, and executive functioning, making smartphones and tablets valuable tools to enhance cognitive performances. However, the studies are mainly case series, case–control, and in general small-scale studies and often without follow-up, and only a few RCTs have been published to date.
Conclusions
Despite the great attention paid to mHealth in recent years, the evidence in the literature on their effectiveness is scarce and not comparable. Longitudinal RCTs are needed to evaluate the efficacy of mHealth cognitive rehabilitation in the elderly and in patients with neurodegenerative disorders.
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Introduction
In 2021, in Europe, the prevalence of people aged more than 65 years was around 20.8% [1], and the percentage is expected to increase reaching 28.1% by 2050 [2]. The constant aging of the population is determining an increasing incidence of age-related neurodegenerative disorders, characterized by a cognitive decline (i.e., Parkinson’s disease—PD and Alzheimer’s disease—AD). Thus, the need to adapt the healthcare system to the multiple emerging needs, to improve assistance and guarantee the continuity of care is evident [3].
Moreover, during the SARS-COV-2 pandemic, the possibility of using innovative technologies to provide healthcare services at home has been emphasized [4,5,6]. In particular, telemedicine allowed the continuity of care and territorial assistance, without the physical presence of the therapist/clinician and the overload of hospitalized healthcare facilities, also favoring the reduction of the costs of the National Health Service [7, 8]. A recent interesting field of application of telemedicine/e-health involved smartphone apps. Hence, recent evidence has highlighted that mHealth through smartphones and tablets can be a useful tool for implementing effective and economical healthcare interventions, especially in the field of telecognitive rehabilitation. In fact, the devices have multiple functionalities, such as sensors, internet access, geolocation data, notifications, and clinical apps [9]. Furthermore, smartphones/tablets can provide support comparable to dedicated medical devices, without the burden and embarrassment of assistive devices [10]. However, despite the high diffusion of these technologies, their use in clinical practice is still poor [11]. Although research on mHealth began in 2014, there are still few studies using these technologies in healthy elderly and in neurological populations [12,13,14].
Indeed, it has been shown that the use of some smartphone apps may improve patient’s health, due to the use of gamification, colorful esthetics, point systems, social competitions (e.g., leaderboard), avatars, game rewards, story missions, which involve the user and improve physical activity [15, 16].
Considering that the interest in using the app in cognitive assessment and rehabilitation is growing [17,18,19,20], the aim of the present review was to summarize current evidence on the usability and effectiveness of the use of mHealth in older adults and in patients with neurodegenerative disorders.
Search strategy
This review was conducted by searching for recent peer-reviewed articles published between June 1, 2010 and March 2023 using the following databases: Pubmed, Embase, Cochrane Database, and Web of Science. The goal of the research strategy was to track progress in using mHealth for cognitive domains in older adults with and without neurodegenerative disease. To this end, the comprehensive search was conducted using the following terms: “Cognitive Rehabilitation” AND “Smartphone” OR “Mobile App”; AND/OR “older adults” and “neurodegenerative disease.”
Inclusion criteria were (i) study participants aged older than 60, (ii) mHealth approach applied to cognitive rehabilitation, (iii) English language, and (v) published in a peer-reviewed journal. We excluded articles describing theoretical models, methodological approaches, algorithms, basic technical descriptions, and validation of experimental devices that do not provide a clear translation into clinical practice. In addition, we excluded (i) animal studies, (ii) studies focusing only on other innovative approaches (such as exergaming, or serious games without smartphones or tablets), or (iii) on assessment or monitoring.
Titles and abstracts were screened independently. Relevant articles were then fully assessed. Disagreements over the article selection have been solved by discussion and with the supervision of a senior researcher.
The list of articles was then refined for relevance, revised, and summarized, with the key themes identified from the summary based on the inclusion/exclusion criteria. The following information was considered: authors, year and type of publication (e.g., clinical trials, pilot study), characteristics of the participants involved in the study, and purpose of the study.
Results
The database search produced a total of 400 titles. After duplicate removal and abstract and title screening, 25 articles were included in the full-text assessment. A flowchart of study selection is presented in Fig. 1. The main findings of the selected articles are reported in Table 1.
PRISMA 2020 flow diagram for new synthematic reviews which included searches of databases and registers only. From: Page MJ, Mckenzie JE, Bossuyt PM, Boutron I, Hoffman TC, Mulrow CD, et al. The PRISMA 2020 statement an updated guideline for reporting systematic reviews. BMJ 2021; 372:n71 https://doi.org/10.1136/bmj.n71
Acceptance and usability
Ten articles were included: 8 articles enrolling healthy elderly [21,22,23,24,25,26,27,28,29,30,31] and 2 articles enrolling patients with neurodegenerative disorders (1 article assessing elderly with cognitive impairment [32], and 1 article assessing patients with Parkinson’s disease-PD [14]). Out of these, only the study performed b Vaportzis et al. [21], enrolling 43 seniors and reporting a good acceptance and usefulness of tablet training was an RCT. However, data on “familiarity” with smartphones and tablets remains controversial [21,22,23,24,25,26,27,28,29,30,31,32]. Heins et al. carried out a study on 30 elderly patients, reporting that the use of technology was “viewed positively” since it helped maintain independence and quality of life [22]. Moreover, older individuals without cognitive decline showed interest in using their smartphones/tablets as a cognitive aid (e.g., reminders, alarm clocks, calendars). In addition, patients with cognitive impairment were found to have adequate acceptance and usability of devices to facilitate cognitive functioning [14, 31]. On the contrary, other studies have pointed out that younger patients had better outcomes through the use of mHealth devices than older ones [25, 26], probably due to a lack of confidence in electronic devices. The characteristics of some devices, such as internet signal problems and poorly understood interface, can create difficulties of use in the elderly, especially with cognitive deterioration. Indeed, in studies performing a training section before proposing the use of devices for cognitive support-rehabilitation, a good acceptance and usability of smartphones, and even more tablets, were reported [24, 27,28,29,30,31]. Bier et al. found that subjects with and without cognitive impairment had generalized the skills learned during training interventions to other smartphone and tablet functions, using other apps in daily life [31]. Confirming this data, Imbeault et al. reported that cognitively impaired subjects, in addition to the cognitive stimulation app, installed other apps such as diaries, or recipe apps to improve self-esteem [25]. Furthermore, we previously reported good feasibility and usability of a 6-week cognitive rehabilitation protocol based on the non-immersive virtual reality telecognitive app in non-demented PD patients [14].
Effectiveness of telerehabilitation via mHealth in the elderly
Eight articles were included, of which 2 RCT studies: Vaportzis et al. [21] reported that table training improved processing speed; Jang et al. enrolled 389 non-demented elderly volunteers and reported that home cognitive training via smartphone improved cognitive performances in terms of global cognitive functioning, language, and memory [33]. In a study enrolling 30 elderly individuals, Heintz et al. reported that participation in engaging activities characterized by new learning promoted the improvement of various cognitive skills, such as memory and executive functioning [22]. Xavier et al. in a longitudinal study enrolling more than 6400 elderly individuals demonstrated that increased Internet/email use was associated with significant improvement in memory performances [34]. Other studies have shown that mHealth enables improvements in executive functioning, such as processing speed and mental flexibility, in individuals with and without dementia. In particular, Chan et al. [27] conducted a study on 18 elderly individuals with no computer knowledge, reporting that, after training on tablet use, an improvement in episodic memory and processing speed was observed. Confirming these data, Yuan et al. noted that older adults without cognitive impairment through smartphone use showed more significant improvements in all cognitive domains, especially executive functions, than non-smartphone users [35]. Moreover, Tun and Lachman in a study of 2671 adults demonstrated that computer use can stimulate executive functions, especially the ability to switch attention and alternate attention [36]. Similarly, Kesse-Guyot et al. in a longitudinal cohort study found that older people using mHealth devices showed increases in episodic memory and executive function [37]. Furthermore, it has been observed that the knowledge acquired through mHealth training can be maintained for a long time, both in subjects with and without cognitive impairment [38,39,40,41,42]. Interestingly, the Intelligent Systems for Assessing Aging Change study on longitudinal aging has shown that the reduced use of technologies (PCs, tablets, smartphones) was associated with a smaller hippocampal volume and worse performance on memory and functioning executive in older adults with cognitive impairment [38].
Effectiveness of telerehabilitation via mHealth in patients with neurodegenerative disorders
Seven articles [43,44,45,46,47,48,49,50], including 2 RCT studies [43, 44], were included. Scullin et al. sin a study on 52 elderly people with mild dementia reported that smartphone training could stimulate memory, especially prospective memory, by learning new strategies [43]. Kraepelien et al. enrolled 77 PD patients and pointed out that smartphone training was helpful as an adjunct to standard medical treatment to improve cognitive functioning [44]. Indeed, it has been shown that mHealth training could have better cognitive outcomes from using smartphones and tablets [43,44,45,46,47,48,49,50]. Wu et al. in a study of elderly people with MCI observed that the control group, who had not used technologies, presented a reduction of global cognitive functioning, processing speed, short-term memory, and executive function [45]. Indeed, Aghanavesi et al. in a study on PD patients demonstrated that through the use of smartphones, it was possible to effectively intervene in cognitive skills [46]. These findings were also supported by Nicosia et al. [47]. The authors conducted a study on 268 cognitively normal seniors (aged 65–97 years) and 22 individuals with mild dementia showing that smartphones have the potential to intervene in the first phases of AD improving short-term memory, processing speed, and working memory [47]. These results were confirmed by El Haj et al. who highlighted the positive effect of using smartphone-based calendars on prospective memory in AD [49]. Similar findings were reported by Pang and Kim, performing a study on smartphone-based calendar training and walking exercise regimen in 42 postmenopausal women with subjective cognitive decline [50].
Discussion
Several studies supported the feasibility and efficacy of mHealth in both older individuals [21,22,23,24,25,26,27,28,29,30,31, 33,34,35,36,37,38,39,40,41,42] and patients with neurodegenerative disorders [32, 43,44,45,46,47,48,49]. Moreover, studies reported that the use of mHealth training was able to stimulate cognitive abilities, such as processing speed, prospective and episodic memory, and executive functioning [21, 43,44,45,46,47,48,49] making smartphones and tablets valuable tools to enhance cognitive performances.
Some authors have shown that the use of mHealth could improve cognitive abilities and allow the generalization of outcomes in daily life, even in the presence of neurodegenerative disorders [19, 20, 31].
Unfortunately, it should be noted that, although the growing interest in this topic, literature data on the use of mHealth in older adults with or without neurodegenerative disorders is still scarce. It should be noted that the majority of selected studies were case–control carried out on small sample and that methodological differences such as the study population (healthy elderly versus cognitively impaired), and type of apps do not allow the comparison across the studies. Furthermore, few RCTs have been performed—in fact, to the best of our knowledge, only 2 RCTs on the effectiveness of smartphone training on older adults, and 2 RCTs related to the efficacy of smartphone tools in neurodegenerative disorders are available [28, 43,44,45]. However, literature data suggest that it would be useful to carry out specific training to increase the use of technologies, favor the effects of cognitive rehabilitation in older individuals with and without cognitive decline [28, 43,44,45], improve “familiarity” with technological tools [48], reducing anxiety about technology or technophobia [25].
In conclusion, the present review underlines that despite the great attention paid to mHealth in recent years, especially after the COVID-19 pandemic. Longitudinal RCTs are needed to evaluate the efficacy of mHealth cognitive rehabilitation in healthy elderly and in patients with neurodegenerative disorders.
Data availability
Data will be available on request to the corresponding author.
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Acknowledgements
Dr. Maggio performed this study during her Ph.D. in Neuroscience at the University of Catania.
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Maggio, M.G., Luca, A., Calabrò, R.S. et al. Can mobile health apps with smartphones and tablets be the new frontier of cognitive rehabilitation in older individuals? A narrative review of a growing field. Neurol Sci 45, 37–45 (2024). https://doi.org/10.1007/s10072-023-07045-8
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DOI: https://doi.org/10.1007/s10072-023-07045-8