Designing an App to Promote Physical Exercise in Sedentary People Using a Day-to-Day Algorithm to Ensure a Healthy Self-Programmed Exercise Training

Abstract

Heart rate variability (HRV) has allowed the implementation of a methodology for daily decision making called day-to-day training, which allows data to be recorded by anyone with a smartphone. The purpose of the present work was to evaluate the validity and reliability of HRV measurements with a new mobile app (Selftraining UMH) in two resting conditions. Twenty healthy people (10 male and 10 female) were measured at rest in supine and seated positions with an electrocardiogram and an application for smartphones at the same time (Selftraining UMH) using recordings obtained through an already validated chest-worn heart rate monitor (Polar H10). The Selftraining UMH app showed no significant differences compared to an electrocardiogram, neither in supine nor in sitting position (p > 0.05) and they presented almost perfect correlation levels (r ≥ 0.99). Furthermore, no significant differences were found between ultra-short (1-min) and short (5-min) length measurements. The intraclass correlation coefficient showed excellent reliability (>0.90) and the standard error of measurement remained below 5%. The Selftraining UMH smartphone app connected via Bluetooth to the Polar H10 chest strap can be used to register daily HRV recordings in healthy sedentary people.

The Effects of Cardiac Rehabilitation including Nordic Walking in Patients with Chronic Coronary Syndromes after Percutaneous Coronary Interventions in Elective Mode

“…Among the important indicators of frequency analysis, the power component of the low- (LF) and high-frequency spectrum (HF) deserve attention. Sympathetic activation associated with an increase in the LF amplitude is observed in stressful situations or recent MI, in contrast to the increase of the HF component occurring in the case of increased vagal tone [ 43 , 44 ]. Although our study did not show any relationship between rehabilitation and NW with the activity of the sympathetic and parasympathetic systems, which may be explained by the short duration of the study or the small group of patients, a number of studies have shown such a relationship [ 45 ].…”

Exploring the Impact of Web-Based vs. In-Person Exercise Training on Benefits and Adherence in Substance Use Disorder Interventions: A Pilot Study

“…Each session was finalized with the cool-down. The progression of the load was performed following the four-phase approach previously described in Casanova et al [ 25 ]. These phases were characterized as follows:…”

The Fine-Tuning Approach for Training Monitoring

“…38 Finally, in terms of training periodization, although a block periodization approach or shock microcycle may be implemented, 51 a day-today approach is commonly used based on the HRV and other performance metrics (eg, variations in jump performance), adapting the training load according to athletic status. 52 Under this context, an incomplete recovery between matches and training sessions or an excessive level of accumulated fatigue are considered when (1) a decrease in HRV occurs together with an increase in resting HR, and (2) there is a decrease of a given performance metric (eg, CMJ, shoulder strength) higher than the SWC calculated from the multiple testing sessions.…”