The ambulatory blood pressure and heart rate variability responses following sudden vigorous physical exertion among firefighters with hypertension

Cilhoroz, Burak T.; Zaleski, Amanda L.; Taylor, Beth A.; Fernhall, Bo; Chen, Ming‐Hui; Thompson, Paul D.; Pescatello, Linda S.

doi:10.47447/tjsm.0492

Cited by 3 publications

(8 citation statements)

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“…We excluded ABP recordings of SBP > 220 or <80 mmHg or DBP > 130 or <40 mmHg in line with the manufacturer’s exclusion criteria. ABP reports were credible if we obtained at least 80% of the BP recordings [ 15 , 18 ]. The ABP data were averaged over hourly intervals for the awake, sleep, and 19 h [ 15 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

“…ABP reports were credible if we obtained at least 80% of the BP recordings [ 15 , 18 ]. The ABP data were averaged over hourly intervals for the awake, sleep, and 19 h [ 15 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

“…Suppression of sympathetic activity deriving from baroreflex resetting after exercise adds to these reductions in total peripheral resistance that is thought to generate PEH response [ 7 , 8 ]. The interaction between sympathetic and parasympathetic activity (i.e., sympathovagal balance), a key factor influencing systemic vascular resistance, can be assessed using heart rate variability (HRV) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Our recent pilot study among firefighters with hypertension showed that the HRV low frequency (LF)/high frequency (HF) ratio, a marker of sympathovagal balance, accounted for ~85% of the BP response after an acute bout of vigorous physical exertion [ 15 ]. In addition, Grassler et al [ 16 ] reported that HRV time domain measures were inversely, and frequency domain measures including the LF/HF ratio were directly associated with the BP response following moderate-intensity aerobic exercise training among healthy adults.…”

Section: Introductionmentioning

confidence: 99%

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The Relationship between Postexercise Hypotension and Heart Rate Variability before and after Exercise Training

Cilhoroz

Zaleski

Taylor

et al. 2023

JCDD

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Because data are scarce, we examined the relationship between postexercise hypotension (PEH) and heart rate variability (HRV) before and after aerobic exercise training among adults with hypertension. Participants completed a 12 w aerobic training program. Before and after training, they performed a peak graded exercise stress test (GEST) and nonexercise control (CONTROL) and were left attached to an ambulatory BP monitor. Prior to CONTROL, HRV was measured supine for 5 min using a 12-lead electrocardiogram (ECG). The participants (n = 18) were middle-aged (52.1 ± 11.7 y) and 50% men with hypertension (131.7 ± 9.8/85.9 ± 8.5 mmHg) and obesity (30.0 ± 3.7 kg·m−2). Before training, ambulatory systolic BP (ASBP) and diastolic ABP (ADBP) decreased by 3.2 ± 2.1 mmHg and 2.5 ± 1.5 mmHg, respectively, from baseline after the GEST versus CONTROL (p < 0.05). After training, ASBP tended to decrease by 3.5 ± 2.2 mmHg (p = 0.055) and ADBP decreased by 1.7 ± 2.5 mmHg (p = 0.001) from baseline after the GEST versus CONTROL. Before training, HRV high frequency (HFms2) (β = −0.441), age (β = 0.568), and resting SBP (β = 0.504) accounted for 66.8% of the ASBP response (p = 0.001), whereas the low frequency (LF)/HF ratio (β = 0.516) and resting DBP (β = 0.277) accounted for 35.7% of the ADBP response (p = 0.037). After training, the standard deviation of NN intervals (SDNN) (β = −0.556), age (β = 0.506), and resting SBP (β = 0.259) accounted for 60.7% of the ASBP response (p = 0.004), whereas SDNN (β = −0.236) and resting DBP (β = 0.785) accounted for 58.5% of the ADBP response (p = 0.001). Our preliminary findings show that adults with hypertension and parasympathetic suppression (i.e., lower SDNN and HFms2 and higher LF/HF) may elicit PEH to the greatest degree independent of training status versus adults with parasympathetic predominance, suggesting that resting HRV may be an important determinant of PEH.

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Section: Methodsmentioning

confidence: 99%

“…ABP reports were credible if we obtained at least 80% of the BP recordings [ 15 , 18 ]. The ABP data were averaged over hourly intervals for the awake, sleep, and 19 h [ 15 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Relationship between Postexercise Hypotension and Heart Rate Variability before and after Exercise Training

Cilhoroz

Zaleski

Taylor

et al. 2023

JCDD

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“…In addition, when these signals are displayed in real time, they create a kind of chaotic signal behavior because they do not repeat themselves, especially in people with arrhythmia. During the human body, the heart rate can change instantaneously due to the increase and decrease in sleep or movements during exertion (Cilhoroz et al 2021 ; Felber et al 2008 ). These are important factors that can cause arrhythmia as well as increase the uniqueness of the signal (Chen et al 2012 ; Chua 1992 ; Chua et al 1993 ; Ebrahimi et al 2020 ; Huang et al 2016 ; Lorenz 1963 ; Quiroz-Juárez et al 2019 ; Sprott 2000 ).…”

Section: Introductionmentioning

confidence: 99%

Transmission and Decryption of the Audio Signal Masked with ECG by FDM Method

PARLAR

Almalı

Atan

et al. 2022

Iran J Sci Technol Trans Electr Eng

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Today, the use of these methods as hybrids has provided the motivation to be a solution to important problems, since the existing methods are insufficient at some points in ensuring the security of personal data. In data security, the inability to decrypt and decrypt the signal to be encrypted retrospectively has always been the subject of research in terms of privacy. At this point, it was preferred to use the electrocardiography (ECG) signal, which is a signal that shows the vital signs of the human body and is also difficult to copy. In the study, firstly, the emulator circuit was obtained by using the mathematical model of the ECG signal. With this obtained signal, the audio signals are masked. The audio signal masked on the transmitter side and the signals providing synchronization were transmitted to the receiver side over a single channel using the frequency division multiplexing (FDM) method. Then, the sliding mode control (SMC) method was chosen for the synchronization of the ECG emulator circuits on the receiver and transmitter side. Histogram, spectral, mean square error (MSE), peak signal to noise ratio (PSNR), key space and key sensitivity, NSCR (number of sample change rate), UACI (unified average changing intensity) and PESQ (perceptual evaluation of speech quality) analyses were used to check the accuracy of the system. These analyses showed that the ECG encoding method has faster unit change, reduces synchronization time, minimizes losses and improves the security of the masked signal compared to other methods sent from two channels. Finally, use of an arrhythmia ECG signal for the synchronization signal on both the transmitter and receiver sides, the synchronization of this signal with the SMC method and the testing of a live audio recording in addition to the conversation, distinguishes the study from other existing studies and reveals its originality.

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Use of Mobile Technology in Assessing Occupational Performance and Stress in Firefighters

Ras

Leach

2022

Advances in Multimedia and Interactive Technologies

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Firefighters are required to maintain all aspects of their health and wellness in order to sustain their fitness for duty. Heart rate variability (HRV) has been used as a reliable tool when assessing the stressors placed on firefighters, be it physical, emotional, or psychological. This review determined the usefulness of using HRV as a tool to determine the physical, physiological, and psychological health of firefighters at a more regular and frequent scale. HRV is a versatile technology with a plethora of uses, particularly in monitoring the cardiovascular strain as a result of firefighting and recovery post-fire suppression. In addition, the literature showed that HRV could be used to successfully monitor physical fitness, physiological stress, psychological stress, decision making, risk taking behavior and recovery in firefighters. The use of mobile technology measuring HRV may be used to successfully assess firefighter occupational performance. In future research, longitudinal studies investigating HRV use in firefighters are warranted.

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The ambulatory blood pressure and heart rate variability responses following sudden vigorous physical exertion among firefighters with hypertension

Cited by 3 publications

References 0 publications

The Relationship between Postexercise Hypotension and Heart Rate Variability before and after Exercise Training

The Relationship between Postexercise Hypotension and Heart Rate Variability before and after Exercise Training

Transmission and Decryption of the Audio Signal Masked with ECG by FDM Method

Use of Mobile Technology in Assessing Occupational Performance and Stress in Firefighters

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