Notes, summaries, assignments, exams, and problems for Physical Education

The joints are structures that connect the skeletal bones and allow
mobility of most of their parts.

Types of Joints

• Motionless: They impede the movement of the bones that group. For example, the joints connecting the skull bones.
• Semi-mobile: Only allow small movements between the bones. This is the case of the joints of the vertebrae.
• Mobile: They allow greater mobility between the bones, such as the elbow, hip, and knee.

The Knee Joint

The knee has the following elements:

• Ligaments: Very strong fibers that connect bones.
• Cartilage: Pieces of cartilage that cover and protect the surfaces of the bones in contact.
• Synovial Capsule: A bag located between the bones, filled with a lubricant called synovial fluid.

The knee joint also has fibrocartilaginous... Continue reading "Understanding Joints and Their Role in Human Movement" »

Understanding and Managing Anxiety

Anxiety is a universal emotion, emerging when we face intense or sustained effort, serving to activate us and prepare for a perceived threat or danger, whether present or potential. The COVID-19 pandemic has significantly increased anxiety levels, with many individuals experiencing heightened worry, especially concerning their own health or that of loved ones.

Practical Strategies for Anxiety Relief

Remember, there's no single "right" way to cope, as each person deals with stress differently. The following practical tips are designed to help you take care of yourself and manage anxiety during challenging times:

1. Physical Activity for Anxiety Relief

   Regular physical exercise can significantly help combat anxiety

What is CrossFit?

CrossFit is a strength and total physical conditioning program. It is based on incrementing the ten most recognized physical capabilities, according to specialists in the fitness training field:

• Strength
• Flexibility
• Balance
• Respiratory-cardiac resistance
• Power
• Speed
• Agility
• Coordination
• Muscle resistance
• Precision

The Objective of CrossFit

The objective of CrossFit is to develop the maximum performance level in all of these physical capabilities, not to carry out a specific training program. This is why we usually say that CrossFit's specialty is not to specialize.

History of CrossFit

CrossFit was created by a gymnast during the 1990s. The first CrossFit gym opened in Santa Cruz, California, in 1995. The number of members grew from 18 in... Continue reading "CrossFit: Intense Workouts for Peak Physical Fitness" »

Pathway 2: Glycolysis Anaerobic Lactic- Glycolysis is the second energy pathway. ATP produced during Glycolysis allows an athlete to engage in medium-term physical activity usually lasting from 1-3 minutes (from 15 seconds - 3 minutes).

• Medium Term sports would include a shift in a hockey game, 400 or 800 meter track event.

  Since glucose is plentiful in the body, Glycolysis is an ideal backup to the short-lived ATP production provided by ATP-PC system. During the process of Glycolysis, glucose is partially broken down in an 11-step biochemical process to yield twice as much ATP! How? Glycolysis transfers energy from the breakdown of glucose to ADP which it uses to rejoin to phosphate to make ATP. Like ATP-PC, Glycolysis does not require O2. ATP

Cellular Respiration: Aerobic System

The ATP produced here far exceeds the other pathways. After one cycle, one glucose molecule can yield 36 ATP molecules (give or take a few depending on the fuel source). In the presence of oxygen, the Aerobic System can sustain activity for a long time until other physiological limits are reached. It involves three separate sub-pathways that begin with one glucose molecule.

1. Glycolysis – 1st Sub-Pathway

1st Stage: Glycolysis is the same as the anaerobic lactic system, except that in the presence of oxygen, Pyruvate (pyruvic acid) is converted to Acetyl CoA (rather than lactic acid). 2 ATP are produced. Acetyl CoA then enters the Krebs Cycle (Citric Acid Cycle), which is a central pathway for the metabolism... Continue reading "Aerobic Energy Production: ATP Yield and Lactate Threshold" »

Combat Victory Conditions

Victory was achieved by knocking out your opponent or if the other person decided to quit (abandonar). However, quitting was often seen as a terrible decision because you were representing more than just yourself; your family could be seen as cowards forever.

Draw Condition: Klimax

A draw (empatar) was not possible under normal circumstances. But sometimes fighters were too exhausted to achieve a Knockout (KO). If this occurred, the referee indicated a "Klimax".

• Klimax: Two fighters stood one in front of the other. One fighter, standing with his hands behind his back, reserved a hit starting from the hip line. This hit could not be avoided or stopped.
• If you stood up, it became your turn until the end, when only one remained

Physical Fitness Fundamentals

Physical fitness enables daily physical activity without excessive fatigue. It comprises four key components, often called the four "S's": Strength, Stamina (or endurance), Speed, and Suppleness (or flexibility). In Spanish, these are known as "Capacidades Físicas Básicas".

1. Endurance or Stamina

Endurance is the ability to exercise continuously for extended periods without tiring. It's crucial for health, quality of life, and many sports, such as marathons. Regular stamina training benefits the cardiovascular system.

There are two main types of stamina based on energy usage:

• Aerobic Stamina: Enables low-intensity activities over long periods, with sufficient oxygen supply to muscles.
• Anaerobic Stamina: Enables high-

Polyhedron

A solid bounded by at least four polygonal faces.

Face

A polygonal surface of a solid figure.

Vertex of a Polyhedron

The point at which three or more edges meet.

Edge

A line segment where two faces of a polyhedron meet.

Diagonal of a Polyhedron

A line segment joining two vertices that are not on the same face.

Prisms

Polyhedra bounded by two parallel polygonal faces and several parallelogram faces. The side edges are all parallel and equally long.

The Height of the Prism

Perpendicular distance between the two parallel faces.

Right Prisms

A prism is a right prism if the sides are rectangles (or squares). In right prisms, the side edges are perpendicular to the bases. If the sides are not rectangles (rhomboids, for example), it is an oblique... Continue reading "Understanding Polyhedra: Definitions, Types, and Properties" »

Key Characteristics of Children's Toys

The main characteristics of a toy are as follows: A toy is any object or material that children use in their games. A child may even attribute the value of a toy to objects initially created for another purpose. For example, a blanket can become a hut or a house. Therefore, the first feature is that the toy emerges as a spontaneous creation.

The toy is a resource used to play, but it is not essential to develop the game. The toy is just an instrument; the important thing is the game itself. Play is an essential element in a child’s life and development, which can occur with or without a toy. The less structured and sophisticated a toy is, the more it favors imagination development and play possibilities.... Continue reading "Essential Characteristics and Types of Children's Toys" »