Dangers of waist rotation

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 blahness wrote:

@stilltt, 
+1
Basically there needs to be weight transfer from right to left, and the feet and knees need to be free to allow the hip to rotate, which then transfers the rotational momentum to the upper body. I don't think the legs straightens that much (only by a bit for that upwards momentum against underspin but that's about it). 

I think there's also a lot to be talked about hip mobility. A lot of times with strength training we are way too quad dominant and neglect the glutes and the hip adductors. I've recently been trying to correct these imbalances as well with lunges, split squats, single leg reverse planks, resistance band side shuffles....I feel like my knees are a lot more stable since I've started training these neglected muscles. 

Now that I have a better understanding of the musculature, I'm finding that balance is so so important. Some injuries are caused by muscular imbalances, where you're too strong in one set of muscles and too weak in the opposing set of muscles. The muscles are attached to the joints so it makes sense that you preferably want the opposing muscles to be balanced so that the joints don't get pulled out of position by the stronger muscle. 
Of course. Earlier in the thread we talked about the "hip jerk" that is in my opinion (and everybody else's I think), the little guy yet the most important factor in the stroke; keeping in mind the topic title and wanting best efficiency, we see that jumping from both feet make the hips axis follow the waist rotation. The angle between the love handles axis and the hips axis  is always under the dangerous zone, the feet axis is more parallel to the table when the swing is achieved, there is no need for the waist to rotate further because the ball is already gone and the playing "hip jerk" happened safely. The recovery from there contains a formidable potential power for a devastating bh while an imaginary super jump to fh backswing setup is necessary if the ball goes there instead (the whole circle moves  towards the fh corner while jumping), even great players do it in 2 small circles steps, 8-2 / 3-3 / 10-4 kinda, it's harder, unless the block comes in the actual power zone, then one jump is enough.I like to think about what to do now with the recovery from that secure and efficient fh. I hope people will promote what I think is the right way to teach the fh loop: jump from both feet and there is a road to success that is at least as good as any other school.
The memory of Fan Yiyong training hard for the US Nationals inspired me to understand a safe and strong fh, and his bh was so devastating!

Edited by stiltt - 12/23/2020 at 12:29am