After giving it a bit of thought, I think a new trial for pacing would probably lead to disappointment, and we'd possibly be setting ourselves up to fail... I'll explain why...
I think the best we could hope for is that it might demonstrate that pacing is safe, and somewhat useful.
As others have said, pacing isn't a treatment, so I doubt if it would lead to drastic improvements in a trial, so the trial outcomes would probably be underwhelming.
Pacing is a symptom management tool that can help stabilise the illness, in some patients, and can make patients more comfortable. In the medium and long term it can lead to improvements in quality of life, and improvements in the illness itself in some patients.
In the pace trial, if i remember correctly, SMC recipients (i.e. all participants) were given basic instructions to avoid boom and bust, so all participants in the trial were pacing do a degree. And, by the time CFS patients enrol on a medical trial they've probably already learned to pace, either through bitter experience of relapsing, or because they've read some helpful info. In such circumstances, where all participants are pacing to a degree, it's difficult to assess the effectiveness of pacing.
Despite what the authors would have us believe, GET, as administered in the PACE trial, was actually a form of pacing, because therapists were instructed to 'adapt' the therapy if patients had a relapse, to "avoid difficulties". (You have to search the therapists manuals hard to find this, but it's there - see bottom of this post for the quote.) So GET was a form of pacing but with an emphasis on pushing activity levels upwards where possible. It's not like the old-style GET where patients were instructed to completely ignore their symptoms and push through regardless - the psychiatrists have learned their lessons about that. If it had been that sort of graded exercise in the PACE trial, then the results would not have been poor, they'd have been utterly disastrous.
I don't think that there is likely to be a lot of difference in outcomes between pacing and GET, in any trial that allows for GET to adapt to the patients' health fluctuations. But CBT/GET train/instruct the patients to interpret their symptoms differently, which makes trials vulnerable to response bias, esp for self-report outcomes. So CBT and GET are perhaps likely to always have better self-report outcomes than pacing which doesn't instruct patients to interpret their illness differently.
Pacing doesn't attempt to moderate patients' cognition, and it doesn't necessarily improve disability, but it allows patients to adapt to their illness and to feel more comfortable. For example, by using pacing as a symptom management tool, I personally have a choice between less activity (increased disability) with improved comfort (less severe symptoms), or more activity (improved disability) with decreased comfort (more symptoms). It suits me personally to always opt for less activity (more disability) and less severe symptoms because that gives me a vastly better quality of life, in terms of my subjective experience. So, in a trial of pacing, I would probably be recorded as being less active, more disabled, and less fit. Pacing would be recorded as having failed me. What most of the outcome measures wouldn't record is my stabilised symptoms over the long-term and the vastly improved subjective quality of my life, increased comfort, and my increased participation in (physically passive) cognitive activities (e.g. reading, writing, using the computer, making phone calls, watching TV etc.) (I still do physical activities, of course, but I don't place a personal emphasis increasing levels of activities for the sake of it. I increase when I feel it's safe to do so.)
It's not the outcomes of the PACE trial that are the problem for us. The outcomes almost all failed to demonstrate improvement after CBT and GET. There were no useful objective outcomes, and the self-report outcomes were marginal. They've even now quietly, but significantly, disowned their deconditioning hypothesis in this latest paper, because there was no change in fitness (step test) after CBT or GET. (Strange that they're being so quiet about it, seeing as the PACE trial was set up to test the deconditioning hypothesis.) And, of course, it was hypothesised that CBT would reverse the illness but it failed to do so when assessed via objective measures of disability - so there goes the fear-avoidance hypothesis too! But it's the huge amount of spin surrounding the publications that's the problem. And that's related to the hugely successful public relations machine that the psychiatric lobby (for want of a better term) have in place. They are hugely successful at making friends and influencing the right kind of people. That's what they do, and they do it wonderfully successfully.
Even if we had a successful trial of pacing, it would go unnoticed by the mainstream media, and the medical profession. It would get lost amongst all the other boring research papers that are published daily. And it would probably be underfunded and published in an obscure journal. The only people who would notice it would be ourselves. It could be useful, but it wouldn't change our situation drastically.
Whatever sort of trial were set up for pacing, we couldn't possibly compete with the hugely successful public-relations machine that spins out a line that CFS is a psychosomatic illness, related to fear etc. They'd probably set up some sort of competing trial, and ours would get drowned out by their public relations juggernaut.
It would also be incredibly complex and expensive to set up such a trial, if it was to be done well, and it might lead to resentment that yet more money is being wasted. Any patient organisation setting up such a trial would have a lot of explaining to do, when the money could have been spent on ground-breaking biomedical research instead. The MRC would get no thanks for funding it. They'd be accused of all sorts. AfME still haven't been forgiven for their involvement in the PACE trial. It's possible that we'd unwittingly set up another trial that was doomed to failure, for reasons that i've given above. The PACE trial cost $5m, and is still being analysed, 5ish years later. So you'd have to have some extremely motivated researchers to throw themselves into a rigorous trial of pacing, with possibly little to show at the end of it. It wouldn't be much of a career move.
I think our best approach is perhaps to continue challenging, to continue informing, to do as much as we can as a community to make our voices heard, and to continue to seek and support biomedical research. I think we're gaining traction as a community.
Although this latest debacle is annoying and frustrating, it has demonstrated one thing - that we are getting louder and stronger as a community - and we're all pulling together in the same direction, speaking with one voice, and slowly making a difference. Look at all the positive responses we've had to the latest media storm - The responses have come from all sorts of people - and not just from the UK - And they've been excellent responses. The journalists will surely have noticed our combined reaction. Many of us are now working on getting more responses published in various places - So we should see much more over the next month, or so. I'm sure that our protests will stimulate some journalists to now run some decent articles, and put some thought into it. There was a great article recently in
medscape, bringing together the various aspects of biomedical research into ME, and I think we'll probably see more of that sort of thing in the future. Things are changing.
Just my views.
This is from the PACE trial's GET therapists manual, where it instructs the therapist to adapt to relapses...
CFS/ME setbacks usually involve an exacerbation of their symptoms, leading to a significantly reduced functional capacity. Participants may describe these as a ‘relapse’, or ‘crash’. People with CFS/ME can usually identify an increase in physical activity which may have attributed towards their setback. Sometimes setbacks also appear to be caused by sleep disturbance, a new active infection or emotional distress. It is normal, and likely, that participants will suffer setbacks throughout the GET programme. If the plan has been undertaken carefully, with a low baseline and small increments as planned, it is unlikely to be the exercise programme that is responsible. However, it is important to ascertain whether any components of the GET programme may have contributed towards setbacks, and to adapt the plan immediately to avoid difficulties.