i've included on the start of this video a bit of an image and you can already see the five different types of strength although i'm going to tell you a secret and reveal at the end i'm gonna i'm gonna claim there is a sixth just as a joke but i'll get there towards the end of the video and what i'd like to do probably quite boringly from your perspective i want to go through these types of strength and make sure you understand what they are and then we're going to do a little activity how exciting so static strength first of all what is this thing okay we are talking here about static strength being force applied with no movement occurring for supplied with no and that's that's fairly obvious right so think about the initial shove of a rugby scrum think about isometric type contractions think about trying to lift the bar in weightlifting that just will not budge that is static strength now if we take this a bit further we're going to have a look at max strength these ones feel quite closely related and i suppose they are but we're going to go to max strength here this is maximum force so this is maximal force produced maximal force in a single voluntary contraction okay so very similar very very similar to our static strength but of course this could well be not isometric but a concentric contraction for example that's why when we look at the rate of contraction over here max is further up than static yeah so let's do that yeah i think anyway let's have a look at endurance and strength endurance now which is the next most i guess rapid form of strength contraction what do we mean by endurance well here we are talking about sustained or repeated contractions over time think about sustained repeated contractions think about an olympic rower pulling the ore head against the water over and over again for let's say well it'll be two thousand meters let's call it eight minutes sustained repeated contractions or force production so of course this by definition has a greater rate of contraction than max because we're doing it more frequently right we're doing it over and over again let's take a bit further look at our dynamic strength with dynamic very simple definition really here and it incorporates two of the examples above and could be seen as a summary type dynamic strength is force applied with any kind of movement so can you see for me or can you agree with me i suppose i should say that both strength endurance and max strength typically are dynamic in their nature because they're including motion so this and this would also be dynamic and finally we're going to talk about elastic or explosive strength and i think i'm back to my sort of uh greeny color so i'll call this one elastic strength elastic strength very closely related to power what we're talking about here is a fast speed fast speed of of elastic contraction so think about this kind of sprint start think about jumping particularly high for a rebound in netball or basketball for example we sometimes call this a short series of contractions so that could be the the the hottest step in the jump of the triple jump for example very elastic in its nature now can you now agree with me why this image is the way it is we've got types of strength and rate of contraction static is of course a very low rate of contraction on movement max tends to be quite slow because we're putting maximal single voltage contraction endurance tends to be a bit quicker because it's repeated dynamic we're sort of summarizing it there because it's with movement so it's fairly movement based and of course the explosive the elastic this is very very fast contractions so it's a high rate of contraction but what if folks what if i was to select this let me uh let me make sure i've got the right layer what if i was to select this what about if i was to copy it paste it drag this down here and what about if i was to say to you right i'm no longer interested i'm no longer interested in rate of contraction what about if i said to you force of contraction could you maybe pause the video and decide of our five different obviously we'll scrub these out these are no longer correct so of our five different types of contraction which one would have the lowest force of contraction and which one would have the highest course of contraction i'll give you a moment to do that and i'll assume you've paused your video and you've gone through that so what would we expect to see well first of all the the lowest force of contraction would be what we would call the endurance okay so endurance would be the lowest form of contraction down here we'd expect probably we'd expect probably that we would have something like uh the dynamic if i put dynamic not sure why i'm changing the colors here that would be not particularly forceful but of course it would incorporate some force we would find probably that we would have the elastic somewhere in the middle of course because it's it's fast it's powerful but of course it's including speed as well we then might expect the static to be in this kind of position and of course by definition we'd have the max up at that end so it's a nice way to reflect on this what about if i did the equivalent thing and i said to you okay what about the number of repeated contractions could you see for example that of course endurance would be at the height tell you what let's actually do that when if i can do another one of those things let's actually do this for let's actually do this for the number of repeated contractions so if this wasn't rate of contraction but this was how many contractions and it would be down here few and up here many what would we expect this to be well of course the fewest contractions are going to be our max and our static so we'll have max here okay we'll have max down here we have static in here relatively few contractions very maximal in their nature of course we'd have elastic again somewhere maybe in here yes we do get repeated contractions we maybe have dynamic you know with movement happening over and over again and of course up here we have our endurance now because of this is by definition a repeated notion so when you think about strength it's important to think about it in relation to what the promotion of the activity actually is does the activity rely on many contractions high force of contraction what about the rate of contraction and which type of strength becomes um valuable now i did promise you a little easter egg at the end this dead daft and if you want to move on feel free to pause the video now and get on with the rest of your day but we've got here force of contraction of course we're saying max strength is the highest we of course know it isn't and since becoming a father some years ago i happen to know that of all the strengths dad's strength is the ultimate for opening a jar for unscrewing a bolt for um for opening a frozen door the dad's strength is comes into its own and it is that layer above max now obviously for goodness sake don't write that in your exam but i just thought i'd share my experience of life cheers