Objective To determine if the careful and deliberate application of frequency, intensity, time, and type (FITT) principles for bodyweight exercise prescription can be achieved via delivery of a mobile app to elicit an aerobic exercise intensity can be utilized for the introduction of concussion rehabilitation.

Design Case series.

Setting Multi-center.

Participants Individuals diagnosed with concussion.

Interventions (or Assessment of Risk Factors) Three sessions of a Continuous Aerobic Resistance Exercise (CARE) protocol over one week.

Outcome Measures Target heart rate of 55% +/-5% (age-adjusted percentage of max: 220 – age), session completion.

Main Results 26 participants (female, n = 20, male, n = 6) initiated a three-session aerobic resistance exercise plan, with 21 (81%) completing all sessions. Heart rate data acquired via Apple watch (Series 6) was recorded for 18 of 26 participants (69%). The median heart rate percentage for all participants at Session 1 was 55.5% of their age-adjusted max (interquartile range [IQR] = 49 – 63%). The median at Session 2 was 58.1% (IQR = 50.8 – 65.2), and at Session 3 was 57.4% (IQR = 49.5 – 64.7). Across all exercise sessions, participants’ heart rate percentage was within the target range (55% to 65%) for 35 of 46 (76%) sessions.

Conclusions A Continuous Aerobic Resistance Exercise (CARE) protocol delivered via an mHealth platform successfully achieved the desired aerobic exercise intensity of 55–65% of age-adjusted maximum heart rate in the majority of cases, and the potential for concussion rehabilitation warrants further investigation.