Browsing by Author "Moran, Jason"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Effects of active exergames training on physical functional performance in older females
    (2022-02-18) Hernandez-Martínez, Jordan; Ramirez-Campillo, Rodrigo; Álvarez, Cristian; Valdés-Badilla, Pablo; Moran, Jason; Izquierdo, Mikel
    Objective: To analyze the effects of 8 weeks of an active exergames training program on walking speed, static balance, timed up-and-go test, and sit-to-stand performance in older females. Methods: Two groups of participants were formed by block-design randomization as follows: (i) control group (n=12; age, 74.1±7.9 years); (ii) 8 week exergames training group (n=13; age, 75.6±9.1 years). Training was undertaken three times per week, including athletic, bowling and table tennis exergames. Each exergame had a duration of 8 min, with 2 min of recovery between exergames. The intensity of the training sessions was controlled using the 10-point rating of perceived exertion scale. Results: Group×time interactions were observed for the 4 m walking speed test, static balance test, timed up-and-go test and the 5-repetition sitto- stand test (all p<0.01; d=0.46–0.80). Conclusion: Exergames training improve physical functional performance in older females. These results should be considered when designing appropriate and better training programs for older adults, since active exergames training it is an affordable and low-cost alternative for community centres and preventive health units working with this population.
  • Thumbnail Image
    Item
    Isokinetic force-power profile of the shoulder joint in males participating in CrossFit training and competing at different levels
    (PeerJ, 2021) Torres-Banduc, Maximiliano A.; Jerez-Mayorga, Daniel; Moran, Jason; Keogh, Justin W.L.; Ramírez Campillo, Rodrigo
    Background: As participants who engage in CrossFit training and competition perform a large volume of high intensity overhead activities, injuries to the shoulder are one of the most common in this sport. Previous research in other sports has indicated that the isokinetic force power profile of the shoulder joint (IPSJ) rotator muscles may assist in the prediction of shoulder injury. Aim: Therefore, the objective of this study was to determine the IPSJ in males engaged in CrossFit training at different competitive levels. Methods: In a cross-sectional study design, participants (age, 24.1 ± 2.7 years) classified as ‘beginner’ (n = 6), ‘intermediate’ (n = 7) or ‘advanced’ (n = 9) provided informed consent to participate in this study. The IPSJ assessment involved rotational and diagonal movements, including internal and external shoulder rotator muscles, at both 180.s−1 and 300.s−1. The variables analysed were peak torque/body mass (%), mean power (W) and the external/internal peak torque/body mass ratio (%). A Kruskal–Wallis test was used to compare the IPSJ of the three groups, with Dunn’s test used for post-hoc analysis. The alpha level was set at p < 0.05. Results: The IPSJ showed greater torque and power values in those who competed at the advanced level as compared to those at a lower competitive level (i.e. intermediate, beginner). This was observed mainly for the internal rotation and internal diagonal movements at both 180.s−1 and 300.s−1 . However, such differences between competitive levels were, in general, absent for the external rotation and external diagonal movements. Moreover, the participants from the advanced competitive level exhibited an imbalance of peak torque between the muscles responsible for the external–internal rotational and external-internal diagonal movements of the shoulder (i.e. peak torque external/internal ratio <66%), particularly in the dominant shoulder. Conclusion: These findings suggest greater development of the shoulder internal rotators and a higher probability of shoulder injury in CrossFit athletes at the advanced competitive level. Based on these results, participants engaged in CrossFit training and competition may wish to increase the volume of training for the shoulder external rotator muscles to complement the large increases in shoulder internal rotator strength that occur as a part of their regular training regimes.