Average and Maximum Heart Rate
Observed session intensity interpreted relative to movement mode, pace, elevation, altitude, duration, terrain, and prior load.
Biomarkers connect TrailGenic’s protocols to measured response and possible adaptation. Read heart rate, sleep, HRV, resting HR, and metabolic proxies beside the behavior, conditions, measurement method, and follow-up that produced them.
The original contribution is a measurement framework linked to TrailGenic sessions and longitudinal comparisons: context → behavior → response → recovery → possible adaptation → decision rule. Ella helps interpret those connections; a dashboard number alone is not a finding.
Recorded signals come from field instruments, wearables, or human reports. Identify the source, units, timing, protocol, missingness, and whether each value is measured, device-estimated, calculated, or inferred. These categories must not be merged.
Observed session intensity interpreted relative to movement mode, pace, elevation, altitude, duration, terrain, and prior load.
Garmin-estimated running VO₂ max progresses from 45 in S1–15 to 46 in S16–18 and 48 in S19–21: +6.7% from the opening value and +4.3% from 46. The 48 first appears September 10 and remains recorded through September 23. This upward aerobic-fitness signal is central to the longevity interpretation. Use the Running series explicitly: the Hiking VO2Max_Garmin field remains 46 throughout, and the workbook does not timestamp each Garmin recalculation. These are device estimates in mL/kg/min; the source fields are preserved separately.
Overnight context that may be relevant after altitude, travel, poor sleep, illness, or unusual strain.
Garmin estimates describing the character of an effort—not laboratory measurements of adaptation.
A wearable estimate interpreted alongside duration, terrain, altitude, mechanics, symptoms, and subsequent return.
All 41 hikes with paired measurements show breath acetone rising from start to finish, then falling by the next day. Medians are 2.2 → 7.1 → 2.0 ppm; the median rise is 5.3 ppm and median end/start ratio 3.65×. H29 has no paired measurements. All 35 available day-two readings are below the hike-end reading. These are repeated metabolic responses across the field record. The measured variable is breath acetone in ppm, not blood-ketone concentration.
Across 37 complete pre-hike / first-night / second-night episodes, median HRV is 37 → 30 → 41 ms, resting HR 58 → 61 → 58 bpm, wearable stress 17 → 24 → 16, and sleep score 73 → 59 → 71. HRV rises by night two in 33/37 episodes; sleep score rises in 18/37. H42 is included and flagged for injury. These trajectories preserve both recovery and variability; they do not establish a training-dose ceiling or diagnose tissue recovery.
Preserve route, altitude, weather, temperature source, wind, surface, equipment, fueling, and hydration where recorded. Hiking analyzes these interacting conditions directly. Foundation protocols prioritize route consistency, while changing conditions remain potential confounders.
Fatigue, soreness, cognition, pain, illness, perceived exertion, and practical field judgment remain part of the record.
Distance, duration, gain, heart rate, load, altitude, environment, mechanics, metabolic context, and symptoms.
Sleep, HRV, resting heart rate, stress, soreness, fatigue, symptoms, and time—without converting one delta into proof.
The next relevant effort can support, refine, or contradict an interpretation while remaining observational.
| Earlier biomarker story | Current evidence | Treatment |
|---|---|---|
| Wheeler was the first positive-drift hike and a fatigue-reveal effort | Five positive-drift hikes preceded Wheeler; drift and pre-hike HRV correlated at r = +0.03 | Fatigue-reveal claim withdrawn |
| Pre-to-post HRV delta measured recovery cost | The delta correlated with its starting value at r = −0.738 | Derived metric retired |
| Pikes demonstrated recovery failure before performance | Low absolute HRV and difficult sleep context remain observations; the retired delta does not establish failure | Causal claim withdrawn |
| Negative drift independently certified cardiac efficiency | Whole-route drift is route-, pace-, terrain-, altitude-, temperature-, and recording-dependent | Retained as directional context |
The September 24 H1–41 baseline supports cardiovascular adaptation at broadly maintained workloads: average HR 127.2 → 124.2 bpm in H1–20 versus H21–41, with similar mean distance, ascent and moving time. Thirteen comparable Baldy loops show the same direction: 125.4 → 123.1 bpm at similar gain and moving time. H42 adds an injury-affected repeat of San Jacinto. Including it changes the later cohort mean to 124.1 bpm; excluding it preserves the established direction. Its slower pace and injured descent prevent attributing the lower session HR to improved economy.
Across 37 complete pre-hike / first-night / second-night episodes, median HRV is 37 → 30 → 41 ms, resting HR 58 → 61 → 58 bpm, wearable stress 17 → 24 → 16, and sleep score 73 → 59 → 71. HRV rises by night two in 33/37 episodes; sleep score rises in 18/37. H42 is included and flagged for injury. These trajectories preserve both recovery and variability; they do not establish a training-dose ceiling or diagnose tissue recovery.
All 41 hikes with paired measurements show breath acetone rising from start to finish, then falling by the next day. Medians are 2.2 → 7.1 → 2.0 ppm; the median rise is 5.3 ppm and median end/start ratio 3.65×. H29 has no paired measurements. All 35 available day-two readings are below the hike-end reading. These are repeated metabolic responses across the field record.
Autophagy remains a biological hypothesis within TrailGenic’s longevity method. Human exercise studies show activation of autophagy-related signaling in skeletal muscle, supporting a plausible cellular-maintenance pathway for repeated movement. TG’s breath-acetone series measures the metabolic response; it does not measure autophagic flux or its magnitude. Continued fasting and hiking are combined exposures in this record. Human skeletal-muscle studies: Møller et al. (2015), PMID 25678702; Schwalm et al. (2015), PMID 25957282.
Mount Baldy, Mount Wilson, San Jacinto, San Gorgonio, Baden-Powell, and the Icehouse Canyon network provide recurring environments for comparison across seasons, metabolic states, protocols, weather, and recovery histories.
TrailGenic interpretation rule · September 24, 2026: lead with the complete trajectory, then comparable route/load blocks, then the new episode. Connect each measure to its longevity-relevant domain. Interpret the full trajectory and comparable route or load blocks before the latest session. Preserve the established movement base; adjust a planned dose when repeated comparable responses, symptoms, or recovery trajectories support the change. A single disrupted night or episode does not establish a capacity ceiling. Change one major protocol variable at a time and retain follow-up.