heart rate Articles
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Peloton launches a $90 forearm-worn heart-rate monitor with LED indicators
Peloton has just launched a new forearm-worn heart-rate band that will replace the company’s current chest-strap monitor. The $90 heart-rate monitor (HRM) uses optical sensors rather than the electrodermal ones found on the chest strap it will soon replace. Meant for use with the Peloton suite of exercise equipment, the original HRM retailed for $50 and is now being sold for ...
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Cardiovascular metrics and transepidermal water loss in a high heat risk environment
Heat stress is currently primarily classified by environmental factors and not physiological factors. It is already known that certain cardiovascular metrics such as heart rate, stroke volume, blood pressure and vascular compliance undergo changes as the body traverses the different classifications of heat stress from heat oedema to heat stroke. However, there is no specific metric that provides ...
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Causal-effect structure transformation based on hierarchical representation for biomedical sensing
In general, understanding causality among components in a target system, including a human body, is quite effective and efficient solution since utilisation of the causality helps predicting future system condition, making correct diagnosis and so forth. As for focusing on biomedical sensing, the causality among vital signals obtained from sensors built in measurement equipment should be ...
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Organophosphate pesticides induce morphological abnormalities and decreased locomotor activity and heart rate in Danio rerio and Xenopus laevis
Organophosphate pesticides (OPs), a class of acetylcholinesterase inhibitors, are widely used in agriculture to reduce insect populations. Due to the conservation of acetylcholinesterase between invertebrates and vertebrates, OPs can also adversely affect non‐target species, such as aquatic and terrestrial animals. This study used uniform conditions to analyze the morphological and ...
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What Is a Good Heart Rate Variability? : Modern Health and Fitness
Defining a good heart rate variability has always been a question within the fitness community. Different lifestyles can dictate a person’s overall cardiovascular health which is why the answer typically varies from person to person. Thankfully, with modern advancements in technology, it’s now much easier to track and monitor these types of health information. We can now check not ...
By Sky Labs
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Prednisolone impairs embryonic and post‐hatching development and shell formation of the freshwater snail, Physa acuta
The aim of the present study was to investigate the lethal and sublethal effects of prednisolone (PDS) exposure on the embryonic and post‐hatching stage of the freshwater snail, Physa acuta. The egg masses were exposed for 14 d to PDS concentrations ranging from 15.6 to 1000 µg/L. PDS treatments from 125 to 1000 µg/L resulted in significant decline in growth, survival, heart rate and notable ...
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Exercising Coronary Artery Disease patient - Case study
A cyclo-ergometer exercise test was performed on this 57-year old male patient. He is a smoker with a family background of CAD. He is suffering from left bundle branch block making ST-segment analysis impossible. The patient has achieved 78 % of max. heart rate at 120 watts. Moderate paleness and dyspnoea have been observed at the end of the 120 watts step. However, after a normal initial ...
By PhysioFlow
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The Evolutional Technology of a Modern Heart Rate Monitor
The technology behind a modern heart rate monitor is a true testament to how medical science has evolved. Heart rate monitors today are not only used for tracking cardiovascular functions in hospital settings but also used as a tool for health and fitness training. They measure and display information in real-time so that medical professionals can make accurate assessments of the patient. In ...
By Sky Labs
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Hydration status and physiological workload of UAE construction workers: A prospective longitudinal observational study
Abstract Background: The objective of the study was to investigate the physiological responses of construction workers labouring in thermally stressful environments in the UAE using Thermal Work Limit (TWL) as a method of environmental risk assessment. Methods: The study was undertaken in May 2006. Aural temperature, fluid intake, and urine specific gravity were recorded and continuous heart ...
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Structural and functional changes in cardiovascular system at arterial hypertension in persons exposed to ionising radiation
The purposes of this research were: (1) to carry out the comparative evaluation of indices of the morphofunctional condition of the cardiovascular system (CVS) in patients with arterial hypertension (AH) exposed to ionizing radiation, taking into account the occurrence of peripheral arterial atherosclerosis and the spread of traditional risk factors of cardiovascular diseases (CVD); (2) to ...
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Circadian variation of cardiac autonomic nervous profile is affected in Japanese ambulance men with a working system of 24-h shifts
Object: The purpose of this study was to compare the stress levels of Japanese ambulance men between on-duty and off-duty days, by using the physiological indices of heart rate variability (HRV) and cortisol in urine, measured over each 24-h period. Methods: Measurements were made during one on-duty and one off-duty day for each subject. The participants were monitored for 24 h with a Holter ...
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The Role of Chx10 Neurons in Global Motor Arrest
A recent study by Goni-Erro et al (2023) in Nature Neuroscience has shed light on a fascinating phenomenon: the neural control of global motor arrest. From the cessation of goal-directed actions to a broader motor arrest in response to fear or environmental cues, this complex behavior involves an intricate set of neuronal pathways. This recent study reveals that the activation of ...
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What Summer is Really Like with Anxiety Attacks or PTSD Symptoms
People call summertime “carefree.” But for those who struggle with panic attacks or PTSD symptoms, it can be anything but. If someone you care about suffers from these symptoms, read on to learn more about how you can support them and have their back—in summer and beyond. Crowded places Farmers markets, festivals, and parades are summertime staples. Yet for many people, ...
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Smartwatch blood pressure sensor technology is getting close
Blood pressure tracking capabilities on Apple Watches have been a long-awaited feature, and the technology to make it happen appears to be in the works. The sensor-making company Apple partners with for its smartwatch sensors, Rockley Photonics, recently announced that initial tests of its photonics-based sensor could measure blood pressure non-invasively when worn on the wrist. ...
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The evolution of photoplethysmography (PPG) within smart devices
As a technology, photoplethysmography (PPG) has been explored for almost a century, but it is only in the last few years that it has had a broader application beyond specialised medical settings. That has generally been driven by the evolution of smartphones, smartwatches and even smaller wearable devices such as smart rings. PPG is most commonly used in pulse oximetry in clinical settings ...
By Sky Labs
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AI’s Evolving Role in Monitoring and Treating Sleep Disorders
Obstructive sleep apnea (OSA) is a serious and life-threatening condition. Approximately 5.9 million adults are diagnosed with OSA, but as many as 23 million people are estimated to be dealing with OSA yet go undiagnosed. The impact on health can be significant, ranging from inconveniences to life-threatening illnesses. Obstructive sleep apnea can cause disrupted sleep for both OSA sufferers and ...
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Avnrt - AV Nodal Reentrant Tachycardia (AVNRT)- Case Study
AV Nodal Reentrant Tachycardia (AVNRT) is an arrhythmia caused by dual AV nodal pathways (one slow and one fast conduction route that enters the AV node). The fast tract has rapid conduction speeds with a longer refractory period, while the slow tract has slower conduction speeds with a shorter refractory period. During sinus rhythm, both pathways are activated, but the fast pathway makes it ...
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Brain Imaging in Zebrafish
An adult human brain contains approximately 86 billion neurons, along with about 85 billion non-neuronal cells. All those cells work together to manage motor control, sensory perception, heart rate, breathing, and more. While the human brain is extremely complex, with the ability to process language, it is not totally unique. Most vertebrate brains are quite similar; they all need similar ...
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Baroreflex Activation Therapy: A Novel Approach for HFrEF Patients
During the webinar, you’ll learn about: Treatment options and unmet needs of HFrEF patients The physiologic rationale of baroreflex activation Barostim therapy overview and clinical evidence overview Appropriate patient selection and real-world experience Important Safety Information CAUTION: Federal law restricts this device to sale by or on the ...
By CVRx
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The Symptoms of Atrial Fibrillation
An array of symptoms can suggest the presence of the common heart irregularity Atrial Fibrillation. While it affects millions of people worldwide, it is also widely acknowledged that Atrial Fibrillation (AF) can be a condition that is relatively difficult to diagnose as the symptoms can be intermittent. Traditionally, AF is diagnosed by a physician checking the patient’s pulse, but ...
By Sky Labs
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