The Use of a Smartphone Application in Monitoring HRV during an Altitude Training Camp in Professional Female Cyclists: A Preliminary Study

Javaloyes, Alejandro; Mateo‐March, Manuel; Manresa‐Rocamora, Agustín; Sanz-Quinto, Santiago; Moya‐Ramón, Manuel

doi:10.3390/s21165497

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…This equipment validation study was able to confirm the fidelity of microphone and accelerometer function of a smartphone at altitude. Limited prior data evaluating smartphone sensor performance at altitude is available, although the smartphone was successfully used to assess heart rate variability in cyclists at altitude [17]. To our knowledge this study is the first validation of high fidelity microphone and accelerometer data capture against known standards at sea level and altitude.…”

Section: Discussionmentioning

confidence: 99%

A feasibility study of smartphone sensors to assess the effect of acute high altitude (3,800 m) exposure on cognition and motor function in healthy participants

Goldman,

Dubowitz,

Anderson

2023

Preprint

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Acute exposure to hypoxia at attitude has neurologic effects. Some subjects develop severe neurologic symptoms, including Parkinsonism, when hypoxic at high altitude as part of an Acute Mountain Sickness syndrome. Digital health technologies can provide continuous monitoring and objective, real-world measures of movement disorders, but only limited validation data of wearable sensors is available in the high-altitude setting. This equipment validation and feasibility study assessed smartphone microphone and accelerometer function at sea level and 12470 feet (3,800 m) to assess their potential value to predict and prevent neurologic features of acute mountain sickness. A feasibility study of standardized assessments of motor, speech and cognitive tasks was performed in 3 normal subjects at sea level and at altitude. All subjects were hypoxic at altitude with O2saturations ranging from 77-81%. Shaker table (range of frequencies) and high-fidelity speaker (range of frequencies) controls confirmed high correlation of observed and expected measurements for microphone and accelerometer under all conditions. The feasibility study demonstrated that under conditions of hypoxia at attitude, fine motor skills are impaired; visual short-term memory is not impaired but has longer response time; gait and balance is impaired, and a postural tremor develops with frequencies below 10 Hz. Future studies could use these wearable sensors to further assess effects at altitude of more severe hypoxia with applications in the high-altitude environment for Parkinson’s Disease patients, with further opportunity for aviation and military use.

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Section: Discussionmentioning

confidence: 99%

A feasibility study of smartphone sensors to assess the effect of acute high altitude (3,800 m) exposure on cognition and motor function in healthy participants

Goldman,

Dubowitz,

Anderson

2023

Preprint

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Validity of Photoplethysmography Mobile Analysis to Test the Autonomic Stress Status of Tactical Athletes

Regueros¹,

Bustamante-Sánchez²,

Clemente-Suárez³

2023

RJMM

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"Background: The effect of stress on sympathetic modulation measured by HRV has been studied in various population groups exposed to different stressors. HRV measurement tools are based on the electrocardiogram (ECG), portable tools such as POLAR V800, and recently photoplethysmography (PPG). The aim of this study was to analyze the validity of a PPG mobile app to measure HRV with a validated V800 system in a tactical athlete population. Methods HRV of 53 professional militaries were analyzed by POLAR V800 and an HRV Camera app with a smartphone during 5 min and 30 s protocol respectively. Results: The HRV values obtained by the PPG presented a significant negative significant correlation in the HRVI index, LF, HF, LF (n.u.), HF (n.u.), and a positive significant correlation in TINN index by the Polar V800 system with the application of a regression equation over the data obtained. Conclusions: HRV Camera PPG App 30s record analysis protocol could be applied using a regression formula depending on the HRV variables after the comparison with a standard 5-minute test conducted with a validated Polar V800. In future research, it is suggested to validate PPG protocols with longer durations."

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The Use of a Smartphone Application in Monitoring HRV during an Altitude Training Camp in Professional Female Cyclists: A Preliminary Study

Cited by 2 publications

References 39 publications

A feasibility study of smartphone sensors to assess the effect of acute high altitude (3,800 m) exposure on cognition and motor function in healthy participants

A feasibility study of smartphone sensors to assess the effect of acute high altitude (3,800 m) exposure on cognition and motor function in healthy participants

Validity of Photoplethysmography Mobile Analysis to Test the Autonomic Stress Status of Tactical Athletes

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