Adarq.org

Performance Area => Article & Video Discussion => Topic started by: Dreyth on December 02, 2014, 09:50:34 am

Title: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Dreyth on December 02, 2014, 09:50:34 am
Curious to read about this.

There has to be SOME kind of effect in my opinion. It's probably very minimal though.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: LBSS on December 02, 2014, 11:21:03 am
in general or acutely?
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Dreyth on December 04, 2014, 09:31:48 am
in general or acutely?

In general, as in, if i cant touch my toes and after a month of stretching in can put my palms to the floor easily without a warm up.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: LBSS on December 04, 2014, 12:27:37 pm
good question, no idea. gonna look into it though. my guess is none at all.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Raptor on December 04, 2014, 03:09:04 pm
Too much flexibility can be bad for the stretch reflex.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: ChrisM on December 04, 2014, 03:48:52 pm
I wonder when you'd begin seeing diminishing returns? Olympic gymnasts are incredibly flexible and yet still seem quite explosive.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: LBSS on December 04, 2014, 05:58:19 pm
Too much flexibility can be bad for the stretch reflex.

you sure? how do you know?
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Raptor on December 04, 2014, 07:43:18 pm
Because there's a loss of stretch reflex when you're too flexible - you don't benefit from it anymore. If you're still explosive it's because you're strong, not because you still benefit from the stretch reflex at the level of people that aren't as flexible as you. But this applies in something like ballet or whatever.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: MattA on December 04, 2014, 11:09:15 pm
Because there's a loss of stretch reflex when you're too flexible - you don't benefit from it anymore. If you're still explosive it's because you're strong, not because you still benefit from the stretch reflex at the level of people that aren't as flexible as you. But this applies in something like ballet or whatever.

This answer does not justify your statement. What happens physiologically that makes you say that?
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: LBSS on December 05, 2014, 09:15:26 am
Because there's a loss of stretch reflex when you're too flexible - you don't benefit from it anymore. If you're still explosive it's because you're strong, not because you still benefit from the stretch reflex at the level of people that aren't as flexible as you. But this applies in something like ballet or whatever.

yeah i'm with matt, i'm not sure this makes sense.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: MattA on December 05, 2014, 12:20:18 pm
Maybe Raptor knows something that we don't, but he needs to explain it in his post, not just take his opinion/theory and write it out as fact. The muscle spindles, which are responsible for activating the stretch shortening cycle, respond to both changes in muscle length AND the rate/speed of change in length. Regardless of how flexible you are statically, I would think it would still kick in during a rapid eccentric contraction. Like in a depth jump, your knees don't bend much to stretch the quadriceps, it's the rate/speed of that stretch that causes the reflex.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Raptor on December 05, 2014, 01:20:11 pm
Maybe Raptor knows something that we don't, but he needs to explain it in his post, not just take his opinion/theory and write it out as fact. The muscle spindles, which are responsible for activating the stretch shortening cycle, respond to both changes in muscle length AND the rate/speed of change in length. Regardless of how flexible you are statically, I would think it would still kick in during a rapid eccentric contraction. Like in a depth jump, your knees don't bend much to stretch the quadriceps, it's the rate/speed of that stretch that causes the reflex.

I think that's a good point. I don't have any evidence for my statement other than what should logically occur using my subjective experience.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Raptor on December 05, 2014, 06:02:24 pm
By the way - forget what I write around here, I'm not in the right mental state to think about anything. Sorry about that.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: MattA on December 05, 2014, 06:16:59 pm
By the way - forget what I write around here, I'm not in the right mental state to think about anything. Sorry about that.

No worries man. I actually thought you did have some reasoning behind your statement but just hadn't taken the time to write it all out. I can kinda see where you're coming from in that if I stretch really good, my muscles feel more relaxed and less explosive, but I don't feel like that has to do with the SSC but more the actin-myosin crossbridges not being at an optimal length for the muscle to contract maximally.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: ChrisM on December 05, 2014, 06:36:43 pm
I can't static stretch before training, lifting or playing...im not bouncy at all. Good dynamic warmup and just moving around til I get a sweat broke seems to be the best for me. I only static stretch post activity. 
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: MattA on December 05, 2014, 06:49:12 pm
I can't static stretch before training, lifting or playing...im not bouncy at all. Good dynamic warmup and just moving around til I get a sweat broke seems to be the best for me. I only static stretch post activity.

Right, that's how I am. I only stretch my calves and hip flexors before activity. The research actually says static stretching is bad for force production. I just don't think it has any effect on the SSC.
Title: Re: Do we have any info on stretching/foam rolling affecting the stretch reflex?
Post by: Dreyth on December 10, 2014, 10:01:34 pm
I can't static stretch before training, lifting or playing...im not bouncy at all. Good dynamic warmup and just moving around til I get a sweat broke seems to be the best for me. I only static stretch post activity.

Right, that's how I am. I only stretch my calves and hip flexors before activity. The research actually says static stretching is bad for force production. I just don't think it has any effect on the SSC.

it has an IMMEDIATE detrimental effect on force production

but im asking as a long term thing here. if you have some pretty tight muscles (quads and calves are usually tight), shouldnt stretching them for a month lead to a little more force production since it will put the cross bridges in more optimal positions?

theoretically yes, but how often is this actually the case?