Louie, it is great to see your here on the forum again.
Before I respond, I’d like to say that I am forever a work-in-progress. I have no desire to stop increasing my knowledge about the human body and humbly say I don’t know everything. I am knowledgeable in some things but far from an expert.
Louie, please correct me if I am mistaken. Are you referring to the Moro reflex also known at the embrace reflex or the startle reflex?
I’ve included a link so all can know what you are referring to in the case we are on the same page. If I am mistaken, I’d like to be enlightened.
Moro (startle reflex in infants)
Moro Reflex (startle) definition
Louie, if this is what you are referring to, I really don’t see the correlation. Help me out with this please.
N.B. We all know that no muscle group can work in isolation. Agonists, antagonists, stabilizers and neutralizers all work together (among other components to produce movement).
Joanne, some literature call it the Moro reflex and it does exist in adults. A simple explanation is that the body has a built in fight/flight/freeze response, and most of the time a “weak” muscle gets stuck in the “freeze response” and once you unstick it, it returns to normal function, most of the time instantly. The sad part of it Joanne, is that you will never find out how? in the Fitness World, you have to search for it in the Physical Therapy world. Joanne i hope this answers your question? Take care.
There is no good or bad. It all depends on the situation.
Isolation is a misnomer: muscles all work together, synergy.
I use “isolation techniques” when I am teaching a cleint about certain muscle groups, but mostly as a tool not a technique of fitness.
Isometrics sometimes have to be used if a client has joint issues or mobility problems.
Personally I don’t see the point of isolating a muscle otherwise.
D, all of the above. This is a goal dependent question and answer.
There are a couple of principles of training that we should keep in mind when considering this topic; Specificity and Specific Adaptations to Imposed Demands (S.A.I.D). With those principles in mind lets take a look at this topic.
Is muscle isolation a good practice? Sure if you’re a body builder, there is not doubt in any professionals mind that training in isolation works for the training of a specific muscle or group. Is this optimal? Sure if you’re a bodybuilder and don’t care about performance. I hope you are seeing a trend here. Bodybuilding is most definitely in favor of isolation type of movements..
Now lets get to the other side of this story…Is muscle isolation a good practice? No, not if you are an athlete. There is a reason that the top level athletes in the world don’t do Isolation exercises…they decrease intra-muscular coordination, and in doing so limit performance increases. Is this optimal? I am sure you can guess my answer to this one..NO, it is not optimal for athletic performance increases.
There is however another topic her for Isolation exercises and that covers physical therapy and corrective exercise strategies.In the realm of Therapy and Corrective strategies there is most definitely a use for isolation type of exercise.
There seems to be much debate here whether or not you should train isolation exercise….the facts are simple and clear. If your goal is not dependent upon increased function or athletic performance then by all means train that way, but if you want to move like well balanced fine tuned human machine then limit the amount of isolation exercises.