Dominic Stone
Muscle relaxers are medications used to treat muscle spasms and spasticity. They are typically recommended as a first-line therapy for muscle spasms caused by conditions such as acute lower back pain or tension headaches. While there are over-the-counter (OTC) options available, it is important to consult a doctor or pharmacist to determine the most suitable treatment. Muscle injuries are common in sports, with strains being the most prevalent type, accounting for about 90% of muscle injuries. To prevent muscle strains, it is crucial to gradually increase activity levels and incorporate flexibility exercises into one's routine.
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What You'll Learn
- Muscle groups: chest, back, legs, arms, shoulders, and abs
- Multi-joint exercises: squats, deadlifts, bench press, and more
- Single-joint exercises: bicep curls, tricep extensions, and more
- Muscle training frequency: at least twice a week for optimal health
- Muscle training combinations: antagonistic training, pairing 'opposing' muscle groups
Muscle groups: chest, back, legs, arms, shoulders, and abs
The human body has more than 600 muscles that are constantly being used. These muscles are categorised into three types: skeletal muscles, cardiac muscles, and smooth muscles. Skeletal muscles are voluntary muscles that work with the bones, tendons, and ligaments to support the body's weight and enable movement. Cardiac muscles, on the other hand, are involuntary and make up the middle layers of the heart. Smooth muscles are also involuntary and line the inside of some organs.
Chest
The chest is primarily composed of two muscles: pectoralis major, the largest chest muscle, and pectoralis minor, a smaller muscle that runs underneath. These muscles are responsible for pulling the arms together during pushing movements. The triceps muscle, while not technically part of the chest, is also important for straightening the elbow during pushing actions.
Back
The back muscles are divided into three groups: superficial (extrinsic), intermediate, and intrinsic (deep). These muscles help control posture, enable movement, and assist in breathing. Superficial back muscles include the latissimus dorsi (lats), levator scapulae, rhomboids, and trapezius (traps). The latissimus dorsi is the largest muscle in the upper body, starting below the shoulder blades and extending to the spine in the lower back.
Legs
The leg muscles are strong and enable various movements, such as walking, running, jumping, and flexing the feet. The upper leg muscles include the quadriceps and hamstrings, while the calf muscles are part of the lower leg muscles and help move the feet. Leg muscles are also categorised into anterior, lateral, and posterior muscles. Anterior muscles help lift and lower the foot and extend the toes, while lateral muscles stabilise the foot during walking or running. Posterior muscles, also known as hamstring muscles, help move the leg from front to back and rotate it at the hip socket.
Arms
The arms contain many muscles that enable both small and precise movements, such as wiggling fingers, as well as larger movements like throwing a ball. The upper arm muscles include the biceps brachii (biceps), brachialis, coracobrachialis, and triceps brachii (triceps). The forearm muscles control the fingers and thumbs, allowing for delicate tasks.
Shoulders
The shoulder muscles are skeletal and voluntary, controlled by the individual. They provide structural support and stability to the shoulder joint and help move the arms in various directions. The deltoid muscle, located on the outside of the shoulder, assists in moving the arm forward, backward, and to the side. The rotator cuff muscles are considered the most important in the shoulder, helping to raise and rotate the arms.
Abs
The abdominal muscles, or abs, are responsible for supporting the trunk, allowing movement, and holding internal organs in place. There are four main abdominal muscle groups: transversus abdominis, rectus abdominis, external oblique muscles, and internal oblique muscles. The rectus abdominis is associated with the characteristic "six-pack" appearance.
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Multi-joint exercises: squats, deadlifts, bench press, and more
Multi-joint exercises are a great way to build strength and increase muscle mass. They involve moving at more than one joint to engage multiple muscle groups. For example, when you perform a squat or a bench press, you are moving at multiple joints, including your knees, hips, and elbows. These exercises are considered multi-joint lifts or compound exercises.
The squat, bench press, and deadlift are three excellent multi-joint lifts that work some of the largest muscle groups in the body. These exercises strengthen the legs, hips, and lower back, which are crucial for everyday movement. They have a high weight ceiling, allowing for continued strength gains over time, making them a great option for beginner powerlifters. Additionally, these exercises can lead to an increase in VO2max and improved cardiovascular function, especially for those transitioning from a sedentary lifestyle.
While these multi-joint exercises provide excellent benefits, it is important to combine them with other exercises to create a well-rounded fitness routine. They can be a great foundation for strength training programs but are often supplemented with additional movements to target specific muscle groups. For instance, single-joint exercises, such as hamstring curls or bicep curls, can help target and grow lagging muscles.
Both single- and multi-joint exercises have their advantages, and incorporating both into your workout routine can maximize the benefits. Single-joint movements can help with muscle growth, especially for bodybuilders, as they provide special attention to specific muscle groups. On the other hand, multi-joint exercises are excellent for burning more calories, as they recruit more muscle mass. Therefore, combining these two types of exercises can lead to a stronger, more balanced, and functional body.
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Single-joint exercises: bicep curls, tricep extensions, and more
Single-joint exercises are a great way to build muscle and strength in specific areas of the body. They are particularly useful for isolating certain muscles and increasing their size and strength. For example, bicep curls, also known as arm curls or dumbbell curls, are a great way to build upper arm muscles. This simple exercise can be performed by anyone, regardless of their fitness level. To perform a bicep curl, stand with your feet shoulder-width apart and your knees slightly bent. Select the weight you want to lift and hold it with your palm facing up. Curl the weight up towards your shoulder, then lower it back down. This movement isolates the bicep and helps to increase its size while also engaging your core.
Another effective single-joint exercise for the arms is the tricep extension. The triceps are a group of three muscles located at the back of the upper arm, between the shoulder socket and the elbow. They are important for strengthening the arms and stabilizing the shoulders. To perform a tricep extension, stand with your feet hip-width apart and engage your core. Take a dumbbell in one hand and hold it behind your head with your palm facing the ceiling. Slowly exhale and lower the weight down your spine, feeling the stretch in your triceps. Keep your neck and back straight to avoid straining your back and shoulder joints.
The cable curl is another effective single-joint exercise for the biceps. This exercise can be performed using a cable machine, which allows for a greater range of motion and constant tension on the muscles. By adjusting the height of the cable, you can target different parts of the bicep.
In addition to the arms, single-joint exercises can also be performed to target other muscle groups, such as the legs. For example, leg extensions and leg curls are great for building the quadriceps and hamstrings, respectively. These exercises can be performed using a leg extension or leg curl machine, which provides resistance to isolate the specific muscle groups.
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Muscle training frequency: at least twice a week for optimal health
Training your muscles at least twice a week is a great way to promote muscle growth and strength. This is supported by a systematic review and meta-analysis of studies that examined the effects of resistance training frequency on muscle hypertrophy. The review found that training frequencies of at least twice per week were more beneficial than training just once per week.
There are various training programs that can be followed to achieve optimal muscle health. One popular method is the 'Push-Pull-Legs' workout, which involves having dedicated days for each of these three types of exercises, and then repeating this cycle. This can be a 4, 5, or 6-day training split, depending on your preference and capacity.
It's important to note that simply increasing the frequency of your workouts may not always lead to better results. For instance, if you're aiming for muscle hypertrophy, the two factors that seem to be the most important for explaining the benefits of frequency for strength development (higher average rep velocity and increased opportunity to practice motor patterns) may not be as crucial. Additionally, overtraining is a real concern, and it's important to give your muscles adequate time to recover.
To maximize the benefits of your training, it's recommended to gradually increase your activity level and not suddenly ramp up your training intensity. Incorporating exercises that increase your overall flexibility can also help protect your muscles from injuries by giving your muscle fibers more room to stretch before they begin to tear.
Remember, your muscles are made up of thousands of small fibers, and your training program should be tailored to your specific goals, whether it's building muscle mass, improving strength, or maintaining overall health.
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Muscle training combinations: antagonistic training, pairing 'opposing' muscle groups
The human body has about 600 muscles, which can be grouped into three types: skeletal, smooth, and cardiac. Skeletal muscles are attached to bones and allow movement. They are generally grouped into opposing pairs, such as the biceps and triceps. These opposing muscle groups, also known as antagonistic pairs, work together to perform an action. When one muscle contracts, the other lengthens to facilitate the movement.
Antagonistic training involves pairing up these opposing muscle groups. This means that while one muscle group is working, the other is resting, allowing for quicker recovery times between exercises and reduced muscle fatigue during the session. For example, when your quadriceps contract, your hamstrings relax and stretch, and vice versa. Similarly, pairing pushing motions for the chest with rowing motions for the back is an effective combination, as these are opposing actions. Other examples include pairing flying motions with rear laterals and pairing overhead pushing movements, like dumbbell shoulder presses, with overhead pulling movements, like front pulldowns.
Complimentary training is similar to antagonistic training but involves pairing a large muscle group or movement with a smaller opposing movement of lesser intensity. Peripheral heart action training is another form of training that pairs upper body and lower body movements. This type of training increases the workload on the heart, leading to a higher calorie burn and improved fitness levels.
It is important to note that you don't need to train opposing muscle groups on the same day or alternate days. The decision depends on your preferences and workout routine. However, neglecting one muscle in a pair of opposing muscles can lead to lengthening and weakening of that muscle, causing an imbalance. Therefore, it is crucial to work on muscle groups across the body to maintain strength and prevent injuries.
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Frequently asked questions
Muscle relaxers are medications used to treat muscle spasms and spasticity. They can be either over-the-counter or prescription medications.
There are over 600 muscles in the human body, including skeletal muscles and cardiac muscles. Skeletal muscles are connected to bones and allow for voluntary movement, while cardiac muscles are involuntary and make up the heart.
Muscle strains are common injuries that occur when a muscle or tendon stretches too much or tears. Strains can be treated with rest, ice, and over-the-counter pain medication. More severe strains may require a splint or cast.
To prevent muscle injuries, it is important to increase overall flexibility, which gives muscle fibers more room to stretch before tearing. Strength conditioning and resistance exercises can also help prevent injuries.
Over-the-counter treatments for muscle spasms include nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen. In some cases, doctors may prescribe muscle relaxants or antispasmodics, but these tend to have more side effects.
