Autonomous HRV-guided exercise using the Selftraining UMH app resulted in similar improvements in peak oxygen uptake compared to personal trainer-led exercise in sedentary adults.
RCT (n=70)
Open-label
Randomized for intervention arms (control group by convenience)
No
Does HRV-based training (autonomous or trainer-led) improve fitness metrics in sedentary adults?
HRV-based training, whether autonomous via an app or led by a personal trainer, effectively improves fitness metrics in sedentary adults.
Effect estimate: MD -1.25 (95% CI -2.82, 0.31)
Absolute Event Rate: 1.62% vs 2.81%
p-value: p=0.141
Introduction Exercising at home is an accessible alternative to the gym, although it presents challenges such as low adherence, poor quality and difficulties in reaching set goals. Wearable technologies and the use of heart rate variability (HRV) make it possible to personalise workouts, optimise fitness and improve adherence. However, specific exercise recommendations based on these metrics are still lacking. This study evaluated the impact of HRV-based training using the Selftraining UMH app in an autonomous format versus a Personal Trainer-led approach. Methods Seventy sedentary adults were divided into three groups: Autonomous ( n = 18), Personal Trainer ( n = 23), and Control ( n = 29). After a two-week baseline HRV assessment, participants underwent an 11-week intervention, with pre- and post-tests on peak oxygen uptake, aerobic power, total test time, strength, and HRV. Results Both intervention groups completed similar session numbers (23.3 vs. 24.5) and high-intensity workouts (13.7 vs. 14.6). Both groups improved significantly ( p 0.05) across all fitness metrics, except aerobic power in the Autonomous group. Effect sizes ranged from small to large (0.21–1.12 Autonomous; 0.23–1.63 Personal Trainer). Strength improvements were greater in the Personal Trainer group, and both outperformed the Control group ( p 0.05) on all variables except aerobic power in the Autonomous group. Conclusions The findings demonstrate that HRV-based training effectively enhances fitness in sedentary adults, with both delivery methods showing similar adherence and benefits. The Selftraining UMH app offers an accessible alternative for autonomous exercise, particularly in settings without professional supervision, promoting improved population health outcomes.
Casanova‐Lizón et al. (Thu,) conducted a rct in Sedentary adults (n=70). Autonomous HRV-guided exercise via Selftraining UMH app vs. Personal trainer-led HRV-guided exercise was evaluated on Change in peak oxygen uptake (VO2 peak) in ml/kg/min (MD -1.25, 95% CI -2.82, 0.31, p=0.141). Autonomous HRV-guided exercise using the Selftraining UMH app resulted in similar improvements in peak oxygen uptake compared to personal trainer-led exercise in sedentary adults.