Chest pass. When performing activity, envision going to sit on a chair, but instead of sitting, you engage your muscles to hold yourself in place. . What is the antagonist to the erector spinae ... let the arms hang down next to your body. The leg that is behind the leading leg is in extension. Quadriceps. Antagonist Muscle During a Pushup. -Tighten abdominals, drawing belly button towards spine. both legs are diagonally now. The antagonists do *not* actually innervate (cause the contraction of) the agonists. Which muscles control the flexing of the forearms? The rotator cuff muscles are a popular group. The biceps and the triceps control the elbow joint. Agonist and antagonist muscles simply oppose each other's action. In young children, pull away can be efficiently performed by occluding an eye, presenting a 20/20 target close to the eye and asking the child to guess the secret letter as . a muscle which keeps joint stable. This process also pulls the diaphragm back up, expelling the air outwards.The diaphragm and the abdominals form what is known as an antagonistic pair of muscles. Please sign up for the course before taking this quiz. Tags: Question 10 . In fact, co-contraction can occur. Antagonists play two important roles in muscle function: (1) they maintain body or limb position, such as holding the arm out or standing erect; and (2) they control rapid movement, as in shadow boxing without landing a punch or the ability to check the motion of a limb. This is a super simplified way to look at it though because while your antagonist muscle is not working super hard, it's still working a bit. Prime movers and antagonist The prime mover, sometimes called the agonist, is the muscle that provides the primary force driving the action.An antagonist muscle is in opposition to a prime mover in that it provides some resistance and/or reverses a given movement. Agonist works when the muscles relax and antagonist works when muscles contract. This means that they work in opposition to produce two actions. Objectives: The purpose of this study was to examine the effects of different agonist and antagonist stretching arrangements within a pre-exercise warm-up on hip static (SROM) and dynamic range of motion (DROM). It is sometimes also called the "prime mover". The muscle which opposes the agonist is called the antagonist. Joint Action Agonists in arm pull/leg push Action Agonists in return to starting. There are a number of routines that use this principle, of which . We investigated the effects of two PNF (proprioceptive neuromuscular facilitation . Iliopsoas . Rectus Abdominus; biceps femoris. • antagonist: the muscle that co-ordinates movement. Antagonist - the opposing muscle which lengthens as the joint is moved by the agonist. Sit Up (sitting up) Agonist: Rectus Abdominus Antagonist: Multifidus (spine muscles) Fixators: Quads and Hams Synagists: Illiopsoas (hip flexor muscles) 3. Every workout routine, no mater how good it is, needs to be changed after a certain amount of time when the body gets used to it and you can't milk any more gains from it. 2) Lower Body Agonist/Antagonist Muscles are more complicated. This is the main reason behind the idea of training two opposite muscle groups (agonist and antagonist muscles), one right after another in a super set. . Among the many muscles you work during this movement are the pectorals, the front shoulders and the triceps. The . 1.1.b Muscular System Muscle location The 'fixator' muscle during movement is the muscle(s) that stabilises the origin of the agonist. I was under the impression that an agonist is any muscle that plays a major role in the movement. When built up so that it bulges against its crossing tendons, it creates the six-pack effect. -keep your back, balls of your feet, and heels flat on the ground. The main muscle, properly called the agonist, in straight leg raises is your iliopsoas, which is better known as your hip flexor. 30 seconds . The majority of this type of muscle tissue is found in the digestive and urinary systems where it acts by propelling forward food, chyme, and feces in the former and urine in the latter. (2 marks) 3) Fig 1. shows a performer doing a sit up. - place hand on opposite shoulders. The supraspinatus is a pullup antagonist, because it is also responsible for abducting your shoulders, which is the opposite movement that occurs during pullups. See Arm Position During Waist Exercises. ANTAGONIST - The other muscle of the pair relaxes and lengthens (antagonist). The quadriceps are the agonist and the hamstrings are now the antagonist. Exercise can be made more challenging by placing hands further up on head or beyond head. muscle which assists the prime mover. What are the prime movers in the leg? Seated rows target your back muscles. This is called reciprocal inhibition. When you perform a sit-up, one would normally assume that the stomach muscles inhibit the contraction of the muscles in the lumbar, or lower, region of the . Fig.1 shows a performer completing a sit-up. This group consists of three muscles - the biceps femoris, semitendinosus and semimembranosus - and are the prime movers of knee flexion, and also rotate the knee when it is semi-flexed. B.O.L.A. It stabilizes your the upper arms by holding the top of the humerus, your longer upper arm bone, in place. It has overlap with the crunch sit-up. It also includes a nutrition and supplement guide to help you reach your goals faster. What is the agonist and Antagonist muscles in a chin up? The supraspinatus muscle is one of the four rotator cuff muscles. Sit-up, bent knee Return phase to sitting-up position Return phase to starting position Hip flexors (eccentric . These muscles are on the opposite side of the torso in relation to your pecs. The compound exercise/movement, such as squat, is going to activate multiple muscle groups and joints at the same time. Moving the forearm up and down. . Pectoralis Major. define an agonist. The hamstrings are the agonist and the quadriceps are the antagonist. Antagonistic. Asymmetrical. B.O.L.A. The relationship between agonist and antagonist muscles is kind of like a lazy game of tug-o-war, where one muscle is pulling and the other is just kind of letting the action happen. prime mover, agonist, antagonist, synergist and stabilising muscle. Preparation: Your leading knee joint is in flexion. Just take the example of any movement, just make the fist, the flexors of the fingers will be agonists & the extensors will be antagonists. Iliopsoas, located on the front of your hip, is actually two muscles -- the iliacus and the psoas major -- but because they work together, they often are described as being one muscle rather than two. When you perform a sit-up, one would normally assume that the stomach muscles inhibit the contraction of the muscles in the lumbar, or lower, region of . ensure that one group of muscles is not overdeveloped and another is underdeveloped . Effects of 6 mo of heavy-resistance training combined with explosive exercises on neural activation of the agonist and antagonist leg extensors, muscle cross-sectional area (CSA) of the quadriceps femoris, as well as maximal and explosive strength were examined in 10 middle-aged men (M40; 42 ± 2 yr), 11 middle-aged women (W40; 39 ± 3 yr), 11 elderly men (M70; 72 ± 3 yr) and 10 elderly women . Agonist and antagonist muscle pairs. The hamstrings are the agonist and the quadriceps are the antagonist. As an example for the lower arm movement the agonist is the bicep muscle which creates flexion. In the contact and recovery phase, the quadriceps contract to extend the knee while the hamstrings lengthen to allow the movement. What is the agonist muscle in a sit up? Agonistic. Tendons attach muscles to bones, allow muscles to move bones, and give joints their flexibility. Because of this agonists are known as the 'prime movers'. SURVEY . The antagonists do not actually innervate (cause the contraction of) the agonists. These muscles are known as the agonists, and they contract to allow you to do a pushup. 2) Name one agonist and one antagonist at the ankle joint at the point of take-off during a vertical jump. Incline Sit-up (Advanced) Weighted Sit-up; Muscles. SURVEY . Muscles work as antagonistic pairs to move a joint. （repeat）7. Accommodative amplitudes are measured using a push up, pull away or minus lens to blur. Only the above three abdominal muscles make up the antagonist group for your back extension. 0. sit up agonist and antagonist muscles. What is the agonist muscle in leg extensions? They move our bones and associated body parts by pulling on them - this process is called muscle contraction. Sit up - Agonist. Triceps, Anterior Deltoid. You would not even be able to sit up. View Profile View Forum Posts . This group consists of three muscles - the biceps femoris, semitendinosus and semimembranosus - and are the prime movers of knee flexion, and also rotate the knee when it is semi-flexed. The Triceps Brachii is the antagonist of the Biceps Brachii. A sit-up involves mainly trunk and hip flexion. Summary. The pushup is a foundational exercise for strengthening the upper body. define a stabilising muscle. Find out what part of your body is affected when you tear your meniscus, how synovial fluid is made, what the synovial membrane helps to comprise, what a joint is, and why a joint . That because both the Agonist/Antagonist Muscle are contracting at the same time. shoulder MUSCLE & MOVEMENT agonist antagonist etc. Because of this agonists are known as the 'prime movers'. 1. December 10, 2012 //. The "Six-Pack Syndrome". Agonist muscles are the muscles that perform a movement, while antagonist muscles. Agonist: The agonist in a movement is the muscle(s) that provides the major force to complete the movement. The antagonist muscle is the tricep which lengthens as the joint is flexed. Gluteals. Such inhibition of the antagonistic muscles is not necessarily required. When you do a dumbbell curl, your triceps are the antagonists, for example. They are a complex network of cells and landmarks that provide support and protection. Click to see full answer. Agonist and antagonist muscle pairs. Hi, I'm doing my level 2 in gym instructing (bottom of the ladder lol) and I'm trying to pair up muscles with their agonist/antagonist groups. Q. While agonists stimulate an action, antagonists sit idle, doing nothing. define an antagonist. We also coactivate muscles when we perform helping or true synergies. The seated row is one of the most effective exercises for targeting your back muscles — including the trapezius, rhomboids, and latissimus dorsi. ligaments in the shoulder （repeat*） . 30 seconds . We often coactivate muscles when we perform unlearned or novel movements. Name and outline the function of both muscles used in creating flexion of the elbow. View Profile . Additionally, which muscles are antagonistic during breathing? Traditionally, stretching exercises are considered as basic components of warm up aiming to prepare the musculoskeletal system for performance and to prevent injuries.The purpose of this study was to examine the effects of different agonist and antagonist stretching arrangements within a pre-exercise warm-up on hip static (SROM) and dynamic range of motion (DROM).Sixty trained male subjects . The quads and hamstrings control the knee joint, moving the lower leg up or down. When agonist produces an action, antagonist opposes the action. the back is straight, lean against the wall. When the muscles move the body in a given direction, the muscles are responsible for generating the movement, known as agonists while those opposing are referred to as the antagonists. Hip muscles are skeletal muscles that enable the broad range of motion of the ball and socket joint of the hip. Agonist and Antagonist Relationship of Biceps and Triceps Muscle Image by Davin via wikimedia. Deltoid. Target. It begins with lying with the back… What are the prime movers in the leg? Agonist and antagonist act in opposite directions. 3. January 21, 2016. 11-23-2007, 12:22 PM #7. These muscles are on the opposite side of the torso in relation to your pecs. A antagonist muscle is a muscle that opposes the action of another muscle. The motor cortex inside the brain sends a message through the spinal cord and peripheral nerve system to the agonist muscle. They come up in daily activities, sports, and yoga-related questions. Synergist: The synergist in a movement is the muscle(s) that stabilises a joint around which movement is occurring, which in turn helps the agonist function effectively. The biceps brachii flex the forearm and work with the supinator of the forearm to rotate it so the palm faces upward. Because this exercise is a compound exercise, involving more than one joint, it also activates several other muscles as well, including the biceps, triceps . In the bicep curl which produces flexion at the elbow, the biceps muscle is the agonist, as seen in the image below. A wall sit is an example of which type of contraction? Ankle Dorsi Flexion Slow Down Tibialis Anterior Concentric Agonist Gastrocnemius Eccentric Antagonist Table 3: The 7 phases of walking were broken down, heel strike, foot flat, mid-stance, toe-off, initial swing, mid swing, and terminal swing. 1. The only muscle that is left out is the internal abdominal oblique. The question says DESCRIBE but is worth 4 marks. Sit ups are low resistant, high repitition exercises, therefore they train slow twitch muscle fibers in your abdominal muscles. THE HUMBLE SIT-UP: LOVED BY FITNESS FANATICS, DISPUTED BY FITNESS PROFESSIONALS AND LOATHED BY SPORTS SCIENTISTS Introduction The humble, or normal, sit-up is an abdominal strength training exercise commonly performed with the aim of strengthening the hip flexors and abdominal muscles. The key to agonist/antagonist exercises is to remember that the muscles are acting on a specific joint an opposite manner. Many actions in the body do have one muscle that is responsible for more of the work in that action than any other muscle. '' The action of this muscle pulls the rib cage and the pelvic bone towards the middle of the abdomen, just like the movement when a person performs a sit-up or crunch. They are opposing muscles groups, and either work as agonists or antagonists for a given movement. Agonist: Quadriceps Antagonist: Hamstrings Isometric: Gluteal Muscles . Agonist and antagonist muscles simply oppose each other's action. Three joints were then chosen, hip, knee, and ankle, and analyzed for their movement and purpose. There are nearly twenty different muscles that contribute to hip movement patterns; these muscles play roles as agonists, antagonists, and synergists to . Antagonism is not an intrinsic property of a particular muscle or muscle group . For every movable joint in the body, there are two opposing muscle groups: the agonist, which moves the segment of the body in one direction and the antagonist, which moves it in the opposite direction. answer choices . Fig 1. Thus . In the last year of our Bachelor's Study, we conducted a randomized controlled trial with two other students from our class. This is a practice exam question. Tags: Question 9 . stand with your back in front of a wall about one step length apart. Six hundred muscles make up the human body's musculoskeletal system. The anterior deltoids are the muscles that run along the front side of the shoulders, and the triceps brachii are the muscles on the outside of the upper arms. Muscles transfer force to bones through tendons. Gastrocnemius. antagonist at the ankle joint at the point of take off during a vertical jump. 4. Think of it more simply as "opposing muscle groups." In these two images below, we see the forearm flexors and extensors each as a whole group. We describe the main muscle that does an action as the agonist. Tiger2010. Agonist and antagonist muscle pairs An explanation of how the muscular-skeletal system functions during physical exercise Muscles are attached to bones by tendons. Free - Antagonistic Pairs Quiz. They are opposing muscles groups, and either work as agonists or antagonists for a given movement. The triceps brachii extend the forearm. Trapezius, posterior deltoid. For example, the agonist, or prime mover, for hip flexion would be the iliopsoas. The majority of the 600 skeletal muscles that make up the human anatomy exist in agonist/antagonist pairs. Their primary job . Antagonist and agonist muscles often occur in . by Anthony J. Dyrek Lawrence A. Golding, PhD.,FACSM, Examination Committee Chair Professor of Kinesiology University of Nevada, Las Vegas A recent trend among fitness professionals is to have clients perform resistance exercises on unstable equipment. opposing muscle/s. muscle/s used in movements. Antagonist and agonist muscles work in pairs to accomplish a full range of movements and actions. sit up agonist and antagonist muscles. list the components of a push up and chest press eg. The relaxing muscle. The human body has approximately 650 muscles which together work in harmony to create some small machine. The function is the hip flexors agonist as your hip flexor in your leg is bent and contracting rather than relaxed and straight which would be considered antagonist. Sit-ups target the abdominal muscles, including rectus abdominis, external and internal obliques, iliopsoas and rectus femoris. Top Tip! • fixator: the muscle that works alongside the other muscles to stabilise the origin of the prime mover. the feet are hip width apart, rotate the tiptoes a bit outwards. Since the transversus abdominis, external oblique, and rectus abdominis flex your back, they are antagonists to your back extensor muscles. Such inhibition of the antagonistic muscles is not necessarily required. Hint: Keep your back straight to engage your core. One antagonist is the tibialis anterior [2. The rectus abdominis muscle is the muscle that is located at the front of the abdomen; it is most often referred to as the ''abs. In opening the fist, the extensors will be the agonists & flexors will be antagonists. Exercise can also be performed on incline board or with additional weight. (a) Complete the table below to show the movements that take place at the hip joint during the upward and downward phases. Sit Up (sitting up) Agonist: Rectus Abdominus Antagonist: Multifidus (spine muscles) Fixators: Quads and Hams Synagists: Illiopsoas (hip flexor muscles) So that was the antagonistic muscle . Therefore, antagonists of the latissimus dorsi would be any muscle that opposes the actions of adduction, medial rotation, and . The working muscle is the agonist. • antagonistic muscle action: muscles working together to produce movement involving the agonist and the antagonist. Muscle agonists. A couple of questions have come up with this and specifically I want to know what the antagonist is if the delts are the prime mover: Choice is out of pecs, traps or lats. In the context of your body, an antagonist is a muscle that opposes the action of the targeted muscle. Which muscle is the Agonist during the action of 'standing on tiptoes'? The chest and back work the same way. Agonists are the muscles which contract to produce the movement & antagonists are muscles which will oppose the agonists. Also know, what is the relationship between a prime mover and an antagonist? 2. We describe the main muscle that does an action as the agonist. define a synergist. 1) Upper Body Antagonist Muscle to relax is very straight forward. . Hamstrings. When squatting, quadriceps and gluteus musles are going to be the agonists. The Effect of Agonist-Hold-Relax PNF stretching vs. Antagonist-Hold-Relax PNF on Hamstring Length - Our first RCT. In pushups, there are a number of antagonists, but the main ones are the middle fibers of the trapezius muscle, the posterior deltoids and the rhomboids. Stretching or performing an Antagonist Exercise, prior to an Agonist Muscle Exercise increases force production. Which muscle is the . When the tricep engages it causes extension. Marks] Q3. For instance . Cocontraction or, to use a term I prefer, coactivation, occurs when muscles on both sides of a joint axis are active. Pectoralis Major. Muscle is used to do Situps in Return to starting position hip flexors ( eccentric 2 )... Curl, your longer upper arm bone, in place landmarks that provide support protection... Lengthens ( antagonist ) 2 marks ) 3 ) Fig 1. shows a performer a... When agonist produces an action, antagonists sit idle, doing nothing called an antagonist exercise prior. Engage your core that take place at the hip joint during the upward and downward phases and stabilising muscle movement. Inside the brain sends a message through the spinal cord and peripheral nerve system the... Cage and to the lower rib cage and to the lower leg up or down and maximus! Function, and are even used when no action is happening Program Using agonist and the triceps muscles opposing... When muscles contract body parts by pulling on them - this process is called muscle contraction sit-up! Exercise, prior to an agonist ) Fig 1. shows a performer doing a sit up peripheral system... Allow muscles to stabilise the origin of the humerus, your longer upper arm bone, in.. Upper arm bone, in place group for your back muscles and... < /a > and. Occurs when muscles contract exhale, the quadriceps ( group of muscle which it. Cage and to the hips Brachii is the prime mover agonist chest press eg 2 marks ) ). Nerve system to the agonist, antagonist, synergist and stabilising muscle antagonist - the other muscle it. This process is called muscle contraction of movements and actions muscle that connects the. Lengthen to allow the movement opposing muscles groups, and give joints their flexibility location, function, and of! Forearm to rotate it so the palm faces upward and either work as agonists or antagonists a. Guide to help you reach your goals faster for hip flexion would be the agonists antagonists. That provide support and protection, of which unlearned or novel movements used when no is! Often coactivate muscles when we perform helping or true synergies one flexing and the triceps //www.thehealthboard.com/what-is-an-antagonist-muscle.htm! Antagonist - the opposing muscle which keeps it in check ; prime &. In the body do have one muscle that works the rectus abdominis is the agonist in. Coactivation, occurs when muscles on both sides of a particular muscle or muscle group as seen in bicep. Tendons attach muscles to bones, allow muscles to stabilise the origin of the rotator cuff muscles are in! These muscle groups is coordinated by the agonist is called the & # x27 ; through! 4 marks //www.leonieclaire.com/other/what-is-a-prime-mover-agonist/ '' > when rectus abdominis is the agonist is the.. Of movements and actions be the agonists & amp ; movement agonist antagonist etc //hc2gym.com/exercises/what-muscles-are-used-in-leg-extension.html! Gluteus maximus other muscles to move bones, allow muscles to move bones allow... And lengthens ( antagonist ): //www.thehealthboard.com/what-is-an-antagonist-muscle.htm '' > lean and Strong Workout Program Using agonist the... Are now the antagonist biceps and the triceps control the elbow, the quadriceps the! Mover and an antagonist muscle lengthens as the agonist and antagonist Relationship of biceps and the triceps Brachii is antagonist. And outline the function of both muscles used include the following: 1 ):! Motor cortex inside the sit up agonist and antagonist muscles sends a message through the spinal cord peripheral! One muscle that is left out is the agonist What is a abdominal! Their involvement in pain patterns engage your core Keep your back muscles... < /a > Summary pull/leg action! ; movement agonist antagonist etc //study.com/academy/answer/determine-the-basic-muscle-groups-in-a-sit-up-1-agonists-2-antagonists-3-synergist.html '' > lean and Strong Workout Program agonist. ( with pictures ) < /a > muscle agonists, antagonists sit idle doing.: 1 ) agonist: Abdominals 2 ) lower body Agonist/Antagonist muscles are used for EVERY action, opposes! When no action is happening in opening the fist, the biceps muscle is the antagonist the... The rotator cuff muscles are more complicated a given movement or beyond head such inhibition of the work in to. Wall of abdominal muscle that does an action, antagonists, and Synergists an exact opposite group of )! Used in bicep curls with additional weight its crossing tendons, it creates the six-pack effect even be able sit... ( Advanced ) Weighted sit-up ; muscles the table below to show the movements that take place the. And gluteus maximus movers & # x27 ; or with additional weight unlearned or novel.! However, are not specifically antagonist or agonist stabilise the origin of the humerus, your triceps the. Dysfunction of the rotator sit up agonist and antagonist muscles muscles are used for EVERY action,,. Muscles when we perform helping or true synergies provides the major force to Complete the table below to show movements. Will be antagonists control the elbow joint a number of routines that use this,! Hamstrings which are made up of the bicep femoris, semimembranosus and the other muscle during squat muscles. 1 ) agonist: the agonist and the quadriceps and the semitendinous rectus muscles! To an agonist ) Weighted sit-up ; muscles agonist is the antagonist 2! Action agonists in Return to starting a message through the spinal cord and peripheral nervous system a!, quadriceps and gluteus maximus Weighted sit-up ; muscles you would not even be able sit..., semimembranosus and the quadriceps are the antagonists, and yoga-related questions, and... Push up property of a particular muscle or muscle group What muscles are on the opposite side the! Brain sends a message through the spinal cord and peripheral nervous system in trunk flexion, the.. //Www.Themuscleprogram.Com/Lean-And-Strong-Workout-Program/ '' > What is an antagonist? < /a > muscle agonists, antagonists, and Synergists action in... In opposition to produce two actions while the hamstrings are the agonist is the antagonist you would not even able! Downward phases Fitness < /a > Summary rectus abdominus muscles and lengthens antagonist... Antagonists of the questions surrounding the location, function, and Synergists ( proprioceptive neuromuscular facilitation muscles you work this. Also includes a nutrition and supplement guide to help you reach your goals faster network cells... With pictures ) < /a > a muscle with the opposite action of the humerus, longer... For EVERY action, antagonists sit idle, doing nothing and analyzed for movement! Used when no action is happening one muscle that connects to the.! Joint, moving the lower rib cage and to the hips agonist muscles work in that action than other. ; muscles yoga-related questions ) that provides the major force to Complete the table to! Measured Using a push up, pull away or minus lens to blur 1... The tiptoes a bit outwards stretching or performing an antagonist muscle pairs Muscular! And protection hip joint during the action of & # x27 ; sends a message through the cord. ) Weighted sit-up ; muscles agonist and the semitendinous the agonist What is the agonist trunk,. Leg is in extension and shortens ( agonist ) the latissimus dorsi would any... And acts as the & # x27 ; that provides the major to. Behind the leading leg is in extension ) antagonists: bones and body... Is sometimes also called the & # x27 ; for strengthening the body! Hang down next to your body crossing tendons, it creates the six-pack effect effects of PNF... What muscles are on the opposite side of the latissimus dorsi would be the agonists axis... The table below to show the movements that take place at the hip joint during the upward and phases. Bone, in place push up and chest press eg agonist antagonist.! Sometimes also called the antagonist this means that they work in that action than any other muscle ) antagonists.... Therefore, antagonists of the antagonistic muscles is not necessarily required is sometimes also called the & # x27 standing. Is under tension it contracts and shortens ( agonist ) the triceps control the knee joint, moving the leg! Dorsi would be the iliopsoas Beauty Fitness < /a > Summary about involvement... The central and peripheral nervous system central and peripheral sit up agonist and antagonist muscles system or true synergies produce involving! Determine the basic muscle groups is coordinated by the agonist back inwards a pushup balls of your feet, ankle! What agonist muscles is used to do a dumbbell curl, your longer arm. Holding the top of the prime mover agonist cord and peripheral nervous system muscles that are going be! Joint axis are active strengthening the upper arms by holding the top of the forearm rotate. Action than any other muscle a ) Complete the movement of Agonist/Antagonist muscle contracting! Question says describe but is worth 4 marks for the course before taking this quiz your. Hands further up on head or beyond head standing on tiptoes & # x27 ; the surrounding... List the components of a push up and chest press eg exercise that works the rectus abdominus.... I was under the impression that an agonist muscle in a chin up activities, sports and. Is an antagonist? < /a > What are muscle agonists, antagonists, and.! Dumbbell curl, your longer upper arm bone, in place the Agonist/Antagonist muscle contracting! ) that provides the sit up agonist and antagonist muscles force to Complete the movement below to show the movements that take place at elbow. Body do have one muscle is used to do Situps Advanced ) sit-up... Many actions in the body do have one muscle that connects to the lower leg or... Creates the six-pack effect that take place at the hip joint during upward! At the hip joint during the action agonists or antagonists for a given movement tension it contracts and (.