COVID-19 - acute and long term
This will be a fun one, he says with dread and despair in his eyes. Again, opinion piece.
COVID-19, or SARS CoV-2 is a virus whose infection is often termed a respiratory syndrome. I'm not a fan of that labelling.
Whilst it is primarily spread through respiration, it appears to also affect the (
1)
- Brain and other elements of the nervous system
- Heart
- Vascular system
- Kidneys
- Liver
- Gastrointestinal tract
- Endocrine system
- Skin
Which is a short way of saying fucking everything.
The immuno-inflammatory response to SARS CoV-2 in the short and long term suggests that long COVID may be caused by an increase in chronic/unnecessary inflammation (
2,
3,
4) .
Like many before me, I see parallels between "long COVID" and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) initially brought on by other viral/bacterial infections (
5).
How it affects weightlifting
How this pertains to weightlifting is variable. Firstly, there should be some reasonable precautions (@2022 Worlds being a superspreader event).
Secondly, the symptoms appear to be variable but a weightlifter's presentation of Long COVID and a genpop presentation is probably going to be different. I think this is more likely to affect elite athletes who catch COVID (especially if they have had multiple infections) as they are more likely to unnecessarily train through post exertional symptom exacerbation (PESE) or not get enough rest, which tends to make those symptoms worse. Additionally, that will likely make chronic pain or increased risk of injury more likely due to increases in fatigue and lack of recovery.
As you would expect, there are decreases in VO2Max found in athletes, weeks after testing negative (
6,
7). This seems fairly consistent across different people in my anecdotal experience, regardless of sport and behaviour.
How COVID/post COVID-positive symptoms affect strength and power appears to be somewhat dependent on the individual case. Though the football paper reports no loss in strength/power/sprint performance, I personally experienced significant post-COVID losses in strength/power after moderate symptoms (struggling to get out of bed, persistent cough with mucous, difficulty speaking due to laryngitis).
There are potential mechanisms, directly or indirectly mediated by SARS CoV-2, that result in decreased muscle strength in genpop (
8). However, the indirect factor of malnutrition is probably less likely in athletes unless there are serious GI issues brought on by the disease. Inactivity can contribute, but IMO does not explain the magnitude of strength loss. I think that general fatigue and neurological impairments are the more likely contributors.
I estimate that my maximal strength initially dropped to about 65-70% (i.e. 65-70% previous 1RM would have been my 1RM on the day), however my I think my quick lift strength would have dropped to about 80%. Recovery between sessions was definitely prolonged, so training volume had to be reduced markedly. Either a few sets on piss weight, or eventually 1-2 sets on a "working" weight after 2-3 weeks.
Another person I know had the opposite - maximal strength almost completely unaffected, quick lifts were affected due to lack of coordination and speed characteristics (partially a skill issue, probably partially neurological). Definitely affected by fatigue and the fact that they were trying to push cardio too hard too soon.
There are some
resources from Long COVID physio around exercise and other stuff which I highly recommend.
Myself as a case study
My weightlifting exercising (can't really call it training) for myself was just based on recovery parameters, trying not to do anything that would aggravate fatigue beyond baseline 24 hours post session and training on non-consecutive days.
First session was lifts on 50-60%/1-2 reps, a few sets, 3 or 4 exercises, ~3-5 min rest between each set.
I actually did 1 set of 3 reps on ~70% for front squats. That was egotistical and stupid, I was physically and mentally wiped for two days afterwards.
Did the same thing of classic lifts 50-60% for 1-2 reps and multiple sets another two times in the first week of the return, keeping strength exercises to 65% or less (3 reps, 3 sets), which was just about the right amount for recovery.
Second week, I progressed lifts as my recovery had allowed for, about 65-75% for 3 sets of 1-2 reps in quick lifts and 70%/3 x 3 for strength exercises.
Third week, about 70%/2-3 or 75-80%/1 for 3 sets, strength was returning so I could do about 80%/3 x 3. Again, on but not over the edge of recovery time.
Fourth week: 75-85%/1-2 x 3 sets for quick lifts, strength still at 80%/3 but up to 5 sets.
Fifth week: 75%/3 x 3 manageable (barely), 80%,85%,90%/1 was about what I could do. Strength wise, kept to 80%/3 x 5.
Sixth week: 80%/2 x 3 reasonable, 90%/1 x 2-3 manageable. Strength improved, 75%/5x5 or 85%/2x3 were manageable.
From there it was more just getting back into form, similar to coming back from a training after a layoff.
Cardiorespiratory fitness and tolerance of low intensity aerobic training or general physical activity took longer to come back (and truthfully, is still not where it was).
I've seen a lot of people push themselves too hard too soon, prolonging their illness and recovery. I suspect that some of the weird injuries or losses of form we've seen in athletes could be partially related to SARS CoV-2.
Luckily I've very briefly come across someone with ME/CFS. Whilst I don't fully understand his predicament, it helped me remember that exercise capability in the gym can be wildly different from what someone can recover from in a reasonable timeframe.
In his first session in the gym, he did a 30 second sit to stand and completed it reasonably well for someone who was sedentary. For the next two or three days, he was physically incapable of lifting/moving his legs to get out of bed.
Exercise progression for him then, was/is a very very slow process. e.g. 60%/5 x 3 to 60%/6 + 60%/5 x 2.
I'm not saying that athletes should necessarily progress that slowly, but I think ME/CFS and long COVID are very much an exercise in "hurry up and wait".
References
- Osuchowski, M. F., Winkler, M. S., Skirecki, T., Cajander, S., Shankar-Hari, M., Lachmann, G., Monneret, G., Venet, F., Bauer, M., Brunkhorst, F. M., Weis, S., Garcia-Salido, A., Kox, M., Cavaillon, J. M., Uhle, F., Weigand, M. A., Flohé, S. B., Wiersinga, W. J., Almansa, R., de la Fuente, A., … Rubio, I. (2021). The COVID-19 puzzle: deciphering pathophysiology and phenotypes of a new disease entity. The Lancet. Respiratory medicine, 9(6), 622–642. https://doi.org/10.1016/S2213-2600(21)00218-6
- Low, R. N., Low, R. J., & Akrami, A. (2023). A review of cytokine-based pathophysiology of Long COVID symptoms. Frontiers in medicine, 10, 1011936. https://doi.org/10.3389/fmed.2023.1011936
- Turner, S., Khan, M. A., Putrino, D., Woodcock, A., Kell, D. B., & Pretorius, E. (2023). Long COVID: pathophysiological factors and abnormalities of coagulation. Trends in endocrinology and metabolism: TEM, 34(6), 321–344. https://doi.org/10.1016/j.tem.2023.03.002
- Koc, H. C., Xiao, J., Liu, W., Li, Y., & Chen, G. (2022). Long COVID and its Management. International journal of biological sciences, 18(12), 4768–4780. https://doi.org/10.7150/ijbs.75056
- Komaroff, A. L., & Lipkin, W. I. (2023). ME/CFS and Long COVID share similar symptoms and biological abnormalities: road map to the literature. Frontiers in medicine, 10, 1187163. https://doi.org/10.3389/fmed.2023.1187163
- Wezenbeek, E., Denolf, S., Bourgois, J. G., Philippaerts, R. M., De Winne, B., Willems, T. M., Witvrouw, E., Verstockt, S., & Schuermans, J. (2023). Impact of (long) COVID on athletes' performance: a prospective study in elite football players. Annals of medicine, 55(1), 2198776. https://doi.org/10.1080/07853890.2023.2198776
- Vollrath, S., Bizjak, D. A., Zorn, J., Matits, L., Jerg, A., Munk, M., Schulz, S. V. W., Kirsten, J., Schellenberg, J., & Steinacker, J. M. (2022). Recovery of performance and persistent symptoms in athletes after COVID-19. PloS one, 17(12), e0277984. https://doi.org/10.1371/journal.pone.0277984
- Montes-Ibarra, M., Oliveira, C. L. P., Orsso, C. E., Landi, F., Marzetti, E., & Prado, C. M. (2022). The Impact of Long COVID-19 on Muscle Health. Clinics in geriatric medicine, 38(3), 545–557. https://doi.org/10.1016/j.cger.2022.03.004