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===Exercise as treatment=== [[File:J Brea TED.JPG|200px|thumb|right|[[Jen Brea|Jennifer Brea]] is an [[United States|American]] who was studying at Harvard; while on a trip to [[Kenya]] she became very ill with what would eventually be diagnosed as [[ME/CFS]]. Brea began experiencing [[Nervous system|neurological]] problems. Her neurologist diagnosed her with "conversion disorder" ([[hysteria]]). When walking home from his office, she collapsed. [[Severe and very severe ME|Jen then needed to use a wheelchair,]] keeping her legs up due to [[Postural orthostatic tachycardia syndrome|POTS]] as her blood pools into her legs]] Two common treatment recommendations for ME/CFS are [[GET]] and [[CBT]]. These treatments are based on the disproven hypothesis that the illness might have begun with a viral infection but has been perpetuated by [[deconditioning]] from lack of activity, and [[illness beliefs|fear and avoidance of activity]]. GET and CBT are aimed at addressing these hypothesized causes by challenging the unhelpful thoughts that are claimed to result in avoidance of activity, and by increasing fitness through a gradual increase in exercise. These treatments are controversial and are at odds with much of the research literature, which provides evidence that exercise is harmful to people with ME/CFS. A large patient survey of treatment responses found that 74% of people who had tried GET, reported that their symptoms subsequently worsened,<ref name="MEASSUK20150529survey">{{Cite web | last1 = ME Association (UK) | authorlink1 = ME Association | date = May 29, 2015 | title = Our CBT, GET and Pacing Report calls for major changes to therapies offered for ME/CFS| url = http://www.meassociation.org.uk/2015/05/23959/ }}</ref> which is consistent with other patient surveys.<ref name="Phoenix20160222Norway2012">{{citation | title = Norwegian patient survey: Experiences of therapeutic approaches (2012) | journal = Phoenix Rising Forum | date = Feb 22, 2016| url = http://forums.phoenixrising.me/index.php?threads/norwegian-patient-survey-experiences-of-therapeutic-approaches-2012-update.43193/ }}</ref> The [[PACE trial]], published in 2011, is the largest GET trial ever conducted. It has received much publicity as a result of its recovery rate claims, though it has come under strong criticism from within both the scientific and patient community for significant flaws in its design, and for overstating (and in some cases misrepresenting) outcomes in both the initial trial, and follow-up studies.<ref name="Coyne2016">{{Cite journal | last = Coyne | first = James Charles | last2 = Laws | first2 = Keith R | date = 2016 | title=Results of the PACE follow-up study are uninterpretable|url=http://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(15)00551-9/fulltext|journal=The Lancet Psychiatry|language=English|volume=3|issue=2| pages = e6βe7|doi=10.1016/S2215-0366(15)00551-9|issn=2215-0366|via=}}</ref> The study was the subject of a series of investigative pieces by journalist [[David Tuller]] in late 2015, that were highly critical of the trial.<ref name="viroblogMECFS" /> A petition signed by almost 12,000 ME/CFS patients and allies,<ref name="MEACTIONpacepetition">{{Cite web | last1 = #MEAction | authorlink1 = #MEAction| title = Petition: Misleading Claims Should Be Retracted | publisher = #MEAction | date = Oct 2015 | url = http://my.meaction.net/petitions/pace-trial-needs-review-now}}</ref> and an open letter signed by 42 ME/CFS experts from around the world,<ref name="openletrLANCET2">{{Cite web | last1 = Davis | first1 = Ronald W | authorlink1 = Ronald Davis | last2 = Edwards | first2 = Jonathan C W | authorlink2 = Jonathan Edwards | last3 = Jason | first3 = Leonard A | authorlink3 = Leonard Jason | last4 = Levin | first4 = Bruce | authorlink4 = Bruce Levin | last5 = Racaniello | first5 = Vincent R | authorlink5 = Vincent Racaniello | last6 = Reingold | first6 = Arthur L | authorlink6 = Arthur Reingold | last7 = Ablashi | first7 = Dharam V | authorlink7 = Dharam Ablashi | last8 = Baraniuk | first8 = James N | authorlink8 = James Baraniuk | last9 = Barcellos | first9 = Lisa F | authorlink9 = Lisa Barcellos | last10 = Bateman | first10 = Lucinda | authorlink10 = Lucinda Bateman | last11 = Bell | first11 = David S | authorlink11 = David Bell | last12 = Bested | first12 = Alison C | authorlink12 = Alison Bested | last13 = Broderick | first13 = Gordon | authorlink13 = Gordon Broderick | last14 = Chia | first14 = John | authorlink14 = John Chia | last15 = Chu | first15 = Lily | authorlink15 = Lily Chu | last16 = Enlander | first16 = Derek | authorlink16 = Derek Enlander | last17 = Fletcher | first17 = Mary Ann | authorlink17 = Mary Ann Fletcher | last18 = Friedman | first18 = Kenneth | authorlink18 = Kenneth Friedman | last19 = Kaufman | first19 = David L | authorlink19 = David Kaufman | last20 = Klimas | first20 = Nancy | authorlink20 = Nancy Klimas | last21 = Lapp | first21 = Charles W | authorlink21 = Charles Lapp | last22 = Levine | first22 = Susan | authorlink22 = Susan Levine | last23 = Light | first23 = Alan R | authorlink23 = Alan Light | last24 = Marshall-Gradisnik | first24 = Sonya | authorlink24 = Sonya Marshall-Gradisnik | last25 = Medveczky | first25 = Peter G | authorlink25 = Peter Medveczky | last26 = Nahle | first26 = Zaher | authorlink26 = Zaher Nahle | last27 = Oleske | first27 = James M | authorlink27 = James Oleske | last28 = Podell | first28 = Richard N | authorlink28 = Richard Podell | last29 = Shepherd | first29 = Charles | authorlink29 = Charles Shepherd | last30 = Snell | first30 = Christopher R | authorlink30 = Christopher Snell | last31 = Speight | first31 = Nigel | authorlink31 = Nigel Speight | last32 = Staines | first32 = Donald | authorlink32 = Donald Staines | last33 = Stark | first33 = Philip B | authorlink33 = Philip Stark | last34 = Stein | first34 = Eleanor | authorlink34 = Eleanor Stein | last35 = Swartzberg | first35 = John | authorlink35 = John Swartzberg | last36 = Tompkins | first36 = Ronald G | authorlink36 = Ronald Tompkins | last37 = Underhill | first37 = Rosemary | authorlink37 = Rosemary Underhill | last38 = Vallings | first38 = Rosamund | authorlink38 = Rosamund Vallings | last39 = VanElzakker | first39 = Michael | authorlink39 = Michael VanElzakker | last40 = Weir | first40 = William | authorlink40 = William Weir | last41 = Zinn | first41 = Marcie L | authorlink41 = Marcie Zinn | last42 = Zinn | first42 = Mark A | authorlink42 = Mark Zinn | title = An open letter to the Lancet - again | date = Feb 10, 2016| website = [[Virology blog]]| url = http://www.virology.ws/2016/02/10/another-request-for-data-from-the-pace-trial/}}</ref> were sent to The Lancet, both calling for the data to be reanalyzed. Twenty-four ME/CFS organizations from 14 different countries have written to Queen Mary University London requesting that the trial data be released for reanalysis.<ref name="MEACTION20160313openletr">{{Cite web | last1 = #MEAction | authorlink1 = #MEAction | title = 24 organisations in 14 countries tell QMUL: Release the PACE data | date = Mar 13, 2016| url = http://www.meaction.net/2016/03/13/24-organisations-in-14-countries-tell-qmul-release-pace-data/#comment-2518 }}</ref> To date, the authors of the trial and editor of The Lancet have refused such requests. Despite such criticism, the PACE trial continues to influence both government and the medical profession's approach to the treatment of ME/CFS in many countries. One of the reasons that exercise may be harmful to people with ME/CFS, is the presence of [[post-exertional malaise]] (PEM), which is an exacerbation of symptoms following physical, mental or even emotional [[exertion]]. Studies have revealed immunological, muscular, [[Nervous system|neurological]], [[Autonomic nervous system|autonomic]] and [[Cardiovascular system|cardiovascular]] abnormalities in response to exercise in people with ME/CFS. As these results are not also found in healthy sedentary people, the adverse effects of exercise cannot be said to be due to deconditioning.<ref name="TwiskF2015">{{Cite journal | last1 = Twisk | first1 = Frank NM | authorlink1 = Frank Twisk | last2 = Geraghty | first2 = Keith J | authorlink2 = Keith Geraghty | title = Deviant Cellular and Physiological Responses to Exercise in Myalgic Encephalomyelitis and Chronic Fatigue Syndrome | journal = Jacobs Journal of Physiology | volume = 1|issue =2|page =007 | date = Jul 11, 2015 | url = http://www.jacobspublishers.com/images/Physiology/J_J_Physiology_1_2_007.pdf }}</ref>{{citation needed|reason=Workwell Foundation studies need to be cited here.}}{{citation needed|reason=The Lights epigenetic changes post-exercise study needs to be cited here.}} People with ME/CFS should approach exercise with caution, as there is much potential for harm. [[Anaerobic]] threshold, use of heart rate monitors for activity and pacing. Analeptic, not aerobic. [[Energy Envelope Theory|Energy envelope]]/[[pacing]] - people do better if stay within their envelope than to push to increase activity
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