Notes, summaries, assignments, exams, and exercises for Sport and physical education for Secondary education

The Origins of Tennis

Tennis, as we know it today, was largely developed by Major Walter Clopton Wingfield in 1873, based on older racket games practiced by the Greeks and Romans. Wingfield introduced the first standardized rules for his game, which he called 'Sphairistike.' This early version established key elements, including the net and a scoring system where the first player to reach 15 points (or 'goals') while in possession of their service would win. Over time, organizations like the International Tennis Federation (ITF) have introduced changes, refining the rules, net height, and scoring, solidifying tennis as a major international sport.

Core Elements of Tennis

Court and Equipment

This dynamic sport can be played individually (singles)...

Factors Affecting Electrical Shock Risk

Risk varies with age, sex, health status, and other factors. For example, women and children are often more vulnerable than men. This vulnerability is frequently attributed to differences in skin type and resistance.

Effects of Electric Current on the Human Body

The severity of an electrical shock depends heavily on the current intensity (measured in milliamperes, mA):

• 1 to 2 mA: Tingling sensation.
• 9 mA: Muscle contraction; the person can usually let go.
• 10 mA: Bearable pain threshold.
• 15 mA: Tetanization (involuntary muscle contraction). Stiff arm.
• 25 mA: Tetanization of chest muscles, potentially leading to asphyxia if prolonged.
• 50 mA: Ventricular fibrillation of the heart (requires immediate artificial respiration

Physical Conditioning Components

Warming Up: Preparation for Effort

The warming up is a physical activity that involves the gradual and progressive mobilization of all the muscles and joints to carry out intensive efforts without injury and maximize performance. Thanks to it, body temperature rises, blood supply improves, neuromuscular coordination increases, and cardiac efficiency is enhanced.

Warming up may be:

• Active: Done at the start of any session of physical activity or sport.
• Rehabilitation: Used to warm the affected muscles after suffering an injury.
• Distance: Used in long-term competition and performed a few hours earlier.
• General: Utilized for general activities.
• Specific: Concerns only the muscles to be engaged in physical activity.

The

Understanding Employment Contract Types

Indefinite Contracts

Indefinite contracts are those that do not specify a completion date. These contracts often aim to promote the stable placement of specific groups affected by unemployment and job instability.

Fixed-Term Contracts

Fixed-term contracts are characterized by having a predetermined end date. Several types fall under this category:

• Work and Service Contracts

  These contracts are for a specific work or service, carried out with autonomy and substantive independence within the normal business activity. Their execution time is limited to the duration necessary for the completion of the work or service. If the contract exceeds one year, a written denunciation (notice of termination) is typically

General Principles of Racket Sports

These activities are classified as sports where a ball is struck using an instrument or by hand against an opponent.

1. Participation Alternatives

Players do not engage in direct physical contact or struggle with their opponent; instead, they compete by alternating turns.

2. Partners and Adversaries

Competition occurs against one or two opponents. Matches can be played individually (1v1) or in pairs/doubles (2v2).

3. Playing Space

The court is divided into two categories: net sports (separated space) or wall sports (common area).

• Separated Space: Tennis, table tennis, badminton, padel.
• Common Area: Squash, pelota, frontenis, Valencian pilota.

4. Regulation and Gameplay

• Objective: A point is won when the ball touches

Spinal Cord and Reflexes

The Spinal Cord processes spinal reflexes. It serves as a pathway for sensory nerve impulses directed to the brain and motor nerve impulses traveling from the brain to the effectors.

Brain Stem Regions

• Medulla Oblongata: Contains the cardiovascular center, which controls heartbeat frequency and strength, blood vessel diameter, and the respiratory center.
• Pons: Contains the apneustic and pneumotaxic areas. The pneumotaxic area limits the duration of inspiration to facilitate breathing, while the apneustic area extends inspiration and inhibits expiration.
• Mesencephalon (Midbrain): Contains reflex centers for eye, head, and neck movements in response to visual and auditory stimuli.

Diencephalon: The Brain's Coordinator

• Thalamus:

Standards for Safe Physical Activity Practice

Adhering to safety standards is crucial for minimizing risk during exercise. These standards cover environmental factors, personal hygiene, nutrition, and hydration.

Environmental and Personal Factors

• Outdoor Exercise: Be mindful of environmental conditions such as pollution, extreme heat, or cold.
• Personal Care: Maintain proper clothing and hygiene standards.
• Nutrition and Hydration: Ensure adequate intake before, during, and after activity.

Hydration and Pre-Exercise Nutrition

Proper fluid and food intake supports performance and prevents issues like cramping and dehydration.

• Fluid Intake: Drink fluids before, during, and after practice, especially if prolonged. Do not wait until you feel thirsty.
• Beverages:

Offensive Player Roles

Ends (Wingers)

Ends are glued to the band and occupy space closest to the 6m line. They tend to be nimble and quick.

Pivots

Your work is one of the toughest. You are in constant infighting in the center of defense to blast holes through which you can throw to your teammates or where a pass can be made.

Lateral and Central Players

These players have practically the same mission: ferrying the ball from side to side to find a hole through which a shot or pass can be executed.

Defensive Player Roles

Defensive Ends (Wingers)

Your main mission is to hinder the game of the opposing ends and try to cut off their circulation and passes.

Defensive Central Sides and Centers

They are the tallest players on the team, tasked with protecting the...

Back Pain Relief and Core Stability

Back pain affects 8 out of 10 people at some point in their lives. Studies show that core stabilization exercises are more effective than conventional strengthening exercises for reducing low back pain and improving function. Yoga, stretching, and especially core-strengthening exercises can significantly reduce back pain.

Recommended Exercises

• Opposite Arm/Leg Raise: On hands and knees, extend one leg and the opposite arm in line with the body. Return and switch sides.
• Reclined Supine Twist: Lie on your back, bring knees up, drop both knees to one side while looking over the opposite shoulder. Return and repeat on the other side.
• Cat-Cow Stretch: On hands and knees, alternate between arching the back down (looking

The Power of Non-Verbal Communication

Communication between humans is conducted through words, but your body is also responsible for completing the message in a 30:70 ratio. This balance depends on several factors: culture, education, state of mind, and character.

Defining Body Language

Body language is the set of elements that assist spoken words in the transmission of a message, often referred to as non-verbal language. These elements include postures, gestures, movements, and looks or sights, which can be both conscious and unconscious.

Types of Gestures

• Facial gestures: Utilizing the muscles of your face to show emotions.
• Manual gestures: These serve as enhancers or clarifiers of a message.
• Universal gestures: Gestures shared by a society that