An Alternative Approach to Sports Injuries
An Alternative Approach to Sports Injuries
Virtual reality devices have flooded the gaming and entertainment markets. Advances in realism and affordability have stolen the hearts of consumers, increasing their commonality in homes. While it has certainly attracted the eye of the public, virtual reality has also struck the interest of exercise physiologists. Presently in the research spotlight are virtual reality devices designed to improve rehabilitation exercise programs for an alternative approach to sports injuries for clinical and geriatric populations (Howard, 2017).
Traditional rehabilitation programs consist of simple, repetitive exercises that are often considered tedious (Howard, 2017; Fung, Richards, Malouin, McFadyen, & Lamontagne, 2006). Lack of interest and motivation to perform the program reduces adherence and effort during exercise, compromising performance outcomes (Richard, Christina, Deborah, Rubio, & Kennon, 1997; Buckworth, Lee, Regan, Schneider, & DiClemente, 2007; Howard, 2017). These issues surrounding rehabilitation training have stimulated the development of more engaging programming: most recently, an alternative approach to sports injuries rehabilitation training that incorporates the use of virtual reality devices.
Within such programs, exercisers interact with virtual environments in manners specific to their rehabilitation protocol. That is, the virtual experience might be designed as a game in which the individual performs the same motion as a traditional rehabilitation program but they receive some type of reward within the game for each successful enaction (Howard, 2017).
For example, balance training programs often include exercises in which one must shift their center of mass without moving their feet; such a program can be refitted to virtual reality skiing games in which exercises must shift their weight to complete turns (Cho, Lee, & Song, 2012). By providing in-game incentive, virtual reality rehabilitation changes the reward profile of rehabilitation from delayed gratification (recovery from injury) to a more instantaneous reward profile (success within the game). Accordingly, virtual reality rehabilitative training has been repeatedly demonstrated to be considered more enjoyable than regular training (Howard, 2017; Bryanton, et al., 2006).
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So its more fun, but does it work?
In a recent meta-analysis (which analyses all relevant investigations), virtual reality rehabilitative training was compared to traditional rehabilitative training (Howard, 2017). Twenty-seven studies which directly compared virtual reality training groups to traditional training groups met the inclusion criteria. Virtual reality training was demonstrated to be not only equivalent but superior to traditional rehabilitative approaches in terms of improvements in muscular strength, motor coordination, balance, and walking (Howard, 2017). While differences in strength between virtual reality and traditional styles were the only measure to reach statistical significance, between group comparisons for each individual aspect of fitness were made using only the fraction of the total 27 studies that recorded it. When investigations of each modality of fitness were pooled, virtual reality demonstrates significantly better improvements in performance relative to traditional rehabilitative training (Howard, 2017).
Why is virtual reality better?
After determining the superiority of virtual reality rehabilitation as an alternative approach to sports injuries, the authors of the meta-analysis sought to determine why. Review of the literature revealed three common hypotheses that may explain why virtual reality is offering greater results:
As mentioned previously, virtual reality training is perceived as more exciting and enjoyable than traditional rehabilitative training (Howard, 2017; Brütsch, et al., 2010). This is thought to lead to better program adherence and more effortful training (Howard, 2017).
2. A similarity to real movement patterns.
Where traditional training may prescribe abstract-resistance training motions to improve the capacity to perform everyday tasks, virtual reality can create virtual representations of the everyday task stimulating participants to engage in more natural movement patterns (Howard, 2017; Subramanian, Lourenço, Chilingaryan, Sveistrup, & Levin, 2013). This may better improve functional outcomes such as the capacity to open a door or grab objects from a shelf (Howard, 2017).
3. Mimics a natural environment.
Virtual reality training can mimic the environment and stressors of truly performing the task that is being rehabilitated (Howard, 2017). Multitasking during training, by holding a conversation or remembering directions, can better prepare rehabilitated patients for the realities of performing the tasks in daily life (Howard, 2017). By performing simulations of the rehabilitated task, patients may be more confident in performing such tasks in their own life (Howard, 2017).
Given the demonstrated advantages of virtual reality as an alternative approach to sports injuries rehabilitative training, it is unsurprising that engineers and scientists are continuing to work towards developing better virtual reality environments and apparatuses for training. As this technology is demonstrating promise despite being still in its infancy, there are high hopes for the development of training programs that even further accelerate rehabilitation (Howard, 2017). As issues with excitement and enjoyment of exercise are also common in healthy populations, it is likely virtual reality may begin to become more strongly immersed in the training of healthy individuals (Richard, Christina, Deborah, Rubio, & Kennon, 1997; Buckworth, Lee, Regan, Schneider, & DiClemente, 2007).
Training healthy individuals often require greater weight and equipment, a likely limiting factor to both research and commercial efforts to date. Products, however, are beginning to be developed. Needless to say, it may be worth taking a closer look at fitness driven virtual reality products in your local technology stores!
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Brütsch, K., Schuler, T., Koenig, A., Zimmerli, L., Mérillat, S., Lünenburger, L., . . . Meyer-Heim, A. (2010). Influence of virtual reality soccer game on walking performance in robotic assisted gait training for children. Journal of neuroengineering and rehabilitation, 7(1), 15. doi:https://doi.org/10.1186/1743-0003-7-15 .
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