A free online course on exercise physiology is available for everyone. The course is created by [company name], a well-known educational institution with over 15 years of experience in the field of training.
The course consists of three modules: “Principles of Exercise Physiology,” “Cardiovascular System,” and “Respiratory System.” All modules contain video lectures, interactive quizzes, and a discussion forum where you can ask your questions to our experts.
You will also get access to a special library with over 100 e-books written by leading scientists in the field of exercise physiology and health. This library will help you understand how your body works during different types of physical activity, learn about various diseases related to physical fitness and sports, why some people are more prone to injuries than others, and much more!
Courses Exercise Physiology Online Course Free
Introduction
Coursera offers online courses for exercise physiology, including an introductory-level course and a more advanced course that focuses on biochemical signaling in muscle contraction. This courses are taught by Dr. Douglas Lindsay, who has been in the field of kinesiology and exercise physiology for more than 30 years.
Introduction to Exercise Physiology
What is Exercise Physiology?
Exercise physiology is the study of the effects of physical activity on the human body. In other words, it’s about how your body reacts to exercise and what happens when you’re not active. For example: does your heart rate increase or decrease when you run? Does your blood pressure rise or fall after a workout? How much oxygen are you able to use in your muscles during exercise? This field also includes pre-participation screening tests such as EKG’s and stress tests that help determine if someone is physically fit enough to participate in sports or fitness activities without endangering their health.
Although many people associate this subject with sports medicine, there are important distinctions between them: while both disciplines focus on biomechanics (the mechanics of movement) and physiology (the functioning of the human body), they approach these topics from different angles—sports medicine focuses more heavily on treatment for injuries sustained during play (such as sprains or strains), while exercise physiology examines how activities such as running affect our hearts’ ability to pump blood throughout our bodies efficiently at rest here too).
Energy Systems: Aerobic Respiration
Aerobic respiration is the process in which your body uses oxygen to create energy. It is anaerobic respiration that allows your muscles to contract and get you moving, while aerobic respiration produces the energy you need to sustain activity over time.
Aerobic Respiration is used for Exercise:
Exercise consists of a series of muscle contractions that require large amounts of ATP; without aerobic respiration, it would be impossible for humans (or any animal) to exercise for any length of time.
Energy Systems: Anaerobic Respiration
Anaerobic respiration is the breakdown of glucose without oxygen.
During high-intensity exercise, the muscles rely on anaerobic respiration for energy production. The glycogen stored in your muscles is broken down into lactic acid and pyruvate. Lactate builds up in the blood and muscle tissue causing you to feel fatigued, which is why you can’t keep running at that pace for long–you’ve used up too much energy!
Energetics of Exercise and Training
The energy systems are the metabolic pathways that your body uses to produce ATP. There are three main energy systems:
- The alactic, also known as a “fast-twitch” system (you can thank the Olympics for that term). This is a short burst of high power output lasting only seconds and doesn’t require oxygen; it’s used when you need to sprint or do something very intense in a short period of time.
- The aerobic system, which is the most efficient way to generate ATP over long periods of time and requires oxygen. Your heart rate stays lower during this kind of exercise compared with anaerobic training because there’s no buildup of lactic acid in the muscles like there would be in anaerobic activity.
- The lactate system, which provides quick bursts of energy at lower intensities but uses up more glycogen than aerobic training does while increasing endurance capabilities by improving cardiovascular health over time—which means better cardiovascular fitness!
Muscle Fiber Types and Contraction
There are two types of muscle fiber, which determine how fast or slow your muscles contract. The type I muscle fibers are called white muscle fibers and the type II muscle fibers are called red muscle fibers.
The fast twitch muscles have more type IIb and type IIa than the slow twitch muscles. The name of these different types refer to their color when they are stained with certain dyes: red for myosin heavy chain (MHC) I and MHC IIa; blue-gray for MHC IIx; purple-brown for myoglobin; pale staining for MHC Ia; and no staining at all for MHC Ib & Ic that only contain one iron molecule per subunit instead of two as in all other types & subunits
Histology and Structure of Muscle Cells
Skeletal muscle is composed of cells called muscle fibers, which are bound together by connective tissue. There are three types of skeletal muscles:
- Striated, or voluntary
- Unstriated, or involuntary
- Cardiac
The Motor Unit and Neural Control of Muscle
A motor unit is the smallest functional unit of skeletal muscle. It consists of a motor neuron and all of the muscle fibers that it innervates. The number of muscle fibers that can be controlled by a single motor neuron varies according to how large each individual fiber is. For example, larger fibers (slow-twitch) have more space between them in comparison with smaller fibers (fast-twitch), meaning that there are fewer fast twitch muscle cells per area than slow twitch ones. This means there will be fewer connections to each single cell and therefore less neurons needed for efficient control over these muscles.
For example: A person’s quadriceps muscle contains around 200 million fibres; however most people only use about 20% – 30% of this capacity at any given time during physical activity. In other words there are enough nerve endings here for every square millimeter of surface area within these muscles! On average there are approximately 1 million neurons per kilogramme body mass; so if we take into account our average male adult (70 kg) who has an estimated 100 billion neurons total then this would mean that they could theoretically control up to 70 billion firing actions if they wanted too!
Skeletal Muscle Myofilaments and Contractile Force
Skeletal muscle is the body’s largest organ, accounting for 40% of total body weight. Skeletal muscle consists of cells called fibers, which are grouped into bundles called fascicles. The fascicles are bundled together to form muscle bundles and then into larger muscles. Each bundle contains many nuclei, which are highly developed in type II fibers and scarce in type I fibers.
When a muscle contracts, it generates force by shortening its length: when a muscle contracts, it pulls on its tendons, which pull on bones that move the joints they connect to (like the elbow or knee). This movement of bones causes other parts of our bodies—like our arms and legs—to move too! When we exercise our bodies adapt to meet this new demand for movement by strengthening themselves with new proteins inside each cell (protein synthesis). This process may also change some cells’ internal structures so that they are better suited for using oxygen efficiently (oxidative capacity).
Biochemical Signaling in Skeletal Muscle Contraction
In this section, you will learn how muscle contraction is controlled by the nervous system. You will also learn about the role of biochemical signaling in skeletal muscle contraction.
The Sliding Filament Theory of Muscle Contraction
- The Sliding Filament Theory of Muscle Contraction
The sliding filament theory of muscle contraction is a model that explains how muscles contract, relax, generate force, and generate power. In this section we will explain and discuss each of these. First up: contraction!
For a muscle to contract (or shorten), the actin filaments must slide over each other in series. This causes the myosin filaments to detach from one another and pull both ends towards each other. As they do so they force outwards on the sides of the sarcomere pushing against it with their heads pointing inward towards each other at opposite ends.*
This generates force by creating movement on one side of your body while simultaneously creating movement on your opposite side as well because it’s happening at both ends simultaneously.*
The Length-Tension Relationship in Skeletal Muscle
The length-tension relationship is the relationship between the length of a muscle and the amount of tension it can generate. The length-tension relationship also has another name, which is [the length-velocity relationship](https://en.wikipedia.org/wiki/Length-velocity_relationship). It’s important to understand this relationship because it helps us better understand muscle performance and movement.
Learn how muscles work, how they adapt to different types of exercise training, and how the body generates and uses energy.
When it comes to learning about exercise physiology, you’ll learn a lot about muscles. In this section, we’re going to cover:
- How muscles work
- How muscles adapt to different types of exercise training
- The role of nerves in controlling muscle contraction and relaxation
Conclusion
If you’re interested in anatomy, biology or exercise physiology then this is a great way to learn more about the human body! The course is designed for anyone who wants to understand how their body works at an advanced level. You’ll also find out what happens when things go wrong – like chronic conditions that affect muscles such as diabetes or heart disease. By taking this class, we hope you will be able gain new insights into how your body functions and why some people are better than others at physical activities like running long distances without getting tired!
