Some thoughts floating around my head; some more recent but most on my mind for the last few years. I look forward to and welcome disagreement, iron sharpens iron etc.
- The catch and recovery of all three lifts is probably the aspect where strength is most important, particularly leg/abdominal/shoulder strength. I think lifts missed in this phase, or avoidance of this (e.g. not squat snatching when it's heavy) is more often a case of lacking specific strength being an issue than "poor technique".
- Following on from that, competition technique should probably focus on minimising the external force and moments (e.g. not letting the bar drop, minimising the moment arms). However, training exercises that focus on loading the catch by limiting bar height whilst maintaining correct timing/rhythm (e.g. pause jerk) are obviously still useful for developing the strength to make it accessible in the first place.
- There are some kinematic/visible constants for good technique in the positive/upward phase of the snatch/clean and the jerk, but the specific expression or geometry of a good pull or drive are highly dependent on what the individual's catching mechanics and strengths are. For example, it's often taught that the jerk must be driven back and/or driven through the heels, but it is objectively true that a significant number of jerk specialists have driven through their forefoot and leaned heavily on their front leg. Luo Shifang, Rizki Juniansyah and Liu Huanhua are probably the most contemporary examples, but this goes back several decades to many of the Bulgarians, Polish and other lifters.
- In summary, I think the "correct" solution to the upward/drive phase of the three lifts is whatever minimises the forces and difficulty of the catch. Usually this means applying maximum vertical impulse and catching higher with less downward momentum, which needs to be balanced against not too much forward or rearward momentum.
- We see a few elite level athletes "jumping forward" in the clean, typically only on heavy weights and squat cleans. Some do because they stiff legging the pull which is bad but I'm not interested in those cases. There are however, a considerable number of cases where athletes who struggle with pulling strength (Nasar, Masanori, Rahmat etc.) and typically display this on heavy weights (>85%). My headcanon is that they are unintentionally reducing the loading on the upper/lower back and glutes/hamstrings whilst trying to maintain momentum through the middle of the pull in order to have adequate height. Pulling the bar more rearwardly *might* compromise upward acceleration due to a less vertical bar path. I usually don't see these lifters have much trouble with balance in the clean, so I'm doubtful the forward shifting of the bar or body is a massive issue. Not something to be taught but something I think is worth thinking about as an attempt to understand it.
- The importance of the second pull is overrated. You don't need a massive second pull if the first pull and the middle of the pull apply and maintain adequate vertical force.
- 1RM and x% being yRM (e.g. 80% = 8RM) are known to be significantly variable for individuals AND movements; something I rarely see discussed. But I'm not sure this makes a big difference for the training of the sport, or for specific strength in the context of weightlifting. I think it matters for optmising hypertrophy training, but who is doing a %1RM based program for curls?
- Having said that, Masanori Miyamoto snatching 120/10 in one set is literally incomprehensible to me. 75.9%/10 for squats, I understand. For snatches? how the fuck
- I wish VBT and other gadgets (e.g. force plates) were useful to me because I am a child who likes playing with toys. However, I just haven't found anything that I really feel is useful in real time, having trialed a few VBT systems and force plates in the past. As much as I hate having fewer objective metrics, they don't tell me anything that I can't see already and they cost a lot of time and money. This is not necessarily true for all of these products as I haven't used all of them and might not be true for other coaches, this is only my personal experience. I hope this field improves into the future.
- Peak bar velocity isn't that important in the snatch/clean; neither is time to peak velocity. Optimising for the former results in a swinging pull, optimising for the latter leads to a janky pull. I'm not aware of any equipment at the moment that is able to reliably and accurately separate absolute bar velocity from vertical velocity, outside of a laptop with a well positioned camera.
- On the other hand, bar velocity is very important in the jerk. I suspect that lifters who "use their arms" when it's heavy are really just lifters who are unable to generate and transfer appropriate speed into the bar when it's heavy.
- All lifters are elastic jerkers, some more than others. I feel that the ability to deliberately brake the dip and change direction is vastly undertrained and makes many lifter's jerks harder than they need to be.
- Lifters without drugs/talent need more GPP than lifters with drugs/talent because they widen the parameters of training. The previous paradigm of training popularity might have had too much sport and SPP training, so the general trend towards more GPP work (maximum strength, hypertrophy, jumps/speed work) is most likely a positive thing. However, I think we are seeing the pendulum swinging the opposite way where GPP is mischaracterised and subsequently overemphasised. You can be very generally strong and fast with relatively poor transfer into the sport.
- Sport training does not lay the foundation for increased performance, nor SPP training, nor GPP training. Physiology and motor learning lay the foundation for sport performance. Treating GPP performance (e.g. squat 1rm) as an arbitrary foundation ignores the athlete's physiological response to that training, as well as the context in which that expression happens.