[{"data":1,"prerenderedAt":178},["ShallowReactive",2],{"project-35573446":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":33,"aspects":34,"strip":37,"post_text":39,"what":40,"said":61,"maker_in_thread":114,"shape":116,"grid":121,"attempts":140,"same_week":141,"maker_shows":137,"maker_hidden":171,"reader_version":172,"card":173},"35573446","Don't Hold Your Breath","Breathing Analysis with Polar H10 HR Monitor","title","Show HN: Don't Hold Your Breath – Breathing Analysis with Polar H10 HR Monitor","https:\u002F\u002Fgithub.com\u002Fkbre93\u002Fdont-hold-your-breath","github.com","kbre93",1681499179,2023,51,9,1059,3109,35,"notable","hardware","wearable sensor analysis","desktop_app",[24,25,26,27],"breathing rate","heart rate variability","polar h10","respiratory sinus arrhythmia","quiet",null,{"positive":31,"neutral":31,"mixed":32,"critical":31},1,0,3,{"idea":35,"execution":36},{"positive":31,"critical":32},{"positive":32,"critical":31},[33,32,32,32,38,32,32,32,31],5,"A person's heart rate fluctuates based on factors such as activity, environment, and mental state. Additionally, heart rate variations occur on a much shorter timescale, with changes happening every few seconds. During inhalation, heart rate slightly increases, and it decreases again during exhalation, a phenomenon known as respiratory sinus arrhythmia. There are several reasons for this. Firstly, an increase in volume within the thoracic cavity (the space between the ribs) leads to a corresponding drop in pressure, which is counteracted by a rise in heart rate to regulate blood pressure. Seco",{"problem":41,"audience":29,"pricing":29,"motivation":47,"time_to_build":29,"stack":51,"openness":60,"stage":60,"team_size":60},{"value":42,"source":43,"evidence":44},"Measuring breathing rate and HRV from chest strap heart data to explore breathing and stress","maker",[45],{"id":46},"post",{"value":48,"source":43,"evidence":49},"Explore the relationship between breathing and heart rate variability, and stress response",[50],{"id":46},[52],{"value":53,"source":54,"evidence":55},"Python","inferred",[56],{"id":57,"by":58,"text":59},"35577457","buzzdenver","Hmm, dumps core for me; happy to help debug if you point me in the right direction. All I get is: zsh: abort python DHYB.py --record-len 600","unknown",{"praise":62,"objections":78,"requests":83,"questions":88,"alternatives":99},[63,71],{"value":64,"source":65,"evidence":66},"Interesting project; commenters find the idea cool","commenter",[67],{"id":68,"by":69,"text":70},"35576923","catchmeifyoucan","This is really cool! Would be great to see how things like meditation and anxiety attacks fare over time. I know the Apple Watch can also do ECG. Wonder if they expose similar…",{"value":72,"source":65,"evidence":73},"Breath-holding helped one commenter quiet racing thoughts",[74],{"id":75,"by":76,"text":77},"35577352","charlie0","Can confirm. My mind tends to race sometimes, especially after caffeine consumption. It's hard to get it to \"shut up\". I held my breath as a simple experiment and it helped quiet…",[79],{"value":80,"source":65,"evidence":81},"Crashes on launch with a core dump when run",[82],{"id":57,"by":58,"text":59},[84],{"value":85,"source":65,"evidence":86},"Track meditation and anxiety over time",[87],{"id":68,"by":69,"text":70},[89,95],{"value":90,"source":65,"evidence":91},"How long do you hold your breath for?",[92],{"id":93,"by":94,"text":90},"35590125","grugagag",{"value":96,"source":65,"evidence":97},"Can Apple Watch expose similar data?",[98],{"id":68,"by":69,"text":70},[100,107],{"value":101,"source":65,"evidence":102},"Apple Watch HRV in the Health app",[103],{"id":104,"by":105,"text":106},"35578976","make2","The apple watch gives some readings about HRV when paired with the Health app on iOS. Not too detailed though.",{"value":108,"source":65,"evidence":109},"Garmin with runalyze breathing rate",[110],{"id":111,"by":112,"text":113},"35588718","jbj","I am a long time Garmin user, and sync to runalyze, when paired with a hear rate chest strap, they also calculate a breathing rate",{"comments":32,"answered":32,"key":115},[],{"commenters":117,"max_depth":118,"maker_replies":32,"first_comment_mins":119,"lifespan_hours":120},6,4,403,78,[122,124,126,128,130,132,134,136,138],[75,32,33,123,76,32],"project\u002Fneutral\u002Fidea",[93,32,32,125,94,32],"commenter\u002Fneutral\u002Fnone",[127,32,32,125,76,32],"35601366",[129,32,32,125,94,32],"35608769",[68,31,38,131,69,32],"project\u002Fpositive\u002Fidea",[104,31,32,133,105,32],"other\u002Fneutral\u002Fnone",[135,31,32,133,112,32],"35588709",[111,137,32,133,112,32],2,[57,33,31,139,58,32],"project\u002Fcritical\u002Fexecution",[],[142,147,152,157,162,167],{"id":143,"name":144,"points":145,"category":146},"35621417","AI Playground",249,"ai",{"id":148,"name":149,"points":150,"category":151},"35572434","WikiBinge",246,"games",{"id":153,"name":154,"points":155,"category":156},"35580959","IPython-GPT",144,"dev_tools",{"id":158,"name":159,"points":160,"category":161},"35620314","Tesseract Analytics",113,"data",{"id":163,"name":164,"points":165,"category":166},"35628642","Kratos",88,"security_privacy",{"id":168,"name":169,"points":170,"category":146},"35568799","Debate Devil",84,false,"v2",{"id":174,"name":5,"line":6,"ai":171,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":29,"top":18,"kw":175,"maker":11,"domain":10,"tier":19,"attempts":32,"strip":176,"url":9,"mix":177,"praise":64,"objection":80,"sub":21},35573446,[24,25,26,27],"300050001",[31,31,32,31],1793991063855]