Mastering the Front Crawl: Technique and Drills
Body Position
- Horizontal and near-surface: Maintain a streamlined body position.
- Aligned: Keep your feet splayed, knees straight, buttocks and stomach tight, elbows extended, hands clasped, and head between your arms.
The Role of Rocking
- Rocking enhances propulsion.
- Facilitates high-elbow recovery and shoulder movement, allowing for deep and effective traction.
- Minimizes drag by reducing surface contact with the water.
- Keep your head slightly elevated, with the waterline roughly at your hairline.
- Look downward
Brain Matter, Motor Pathways, and Nervous System Development
Gray Matter
It is a sensitive character of neuronal nuclei, vegetative and motor. The alpha motor neurons are responsible for innervating the striated or voluntary muscles, and are thus responsible for movement. The gamma motor neurons regulate muscle contraction.
White Matter
Part of clusters of myelinated fibers that circulate in the spinal cord, both upwards and downwards.
Motor Pathways
Motor pathways serve as the main transport facilities for motor skills. They are subdivided into two pathways:
Pyramidal
Read MoreNutrition and Physical Activity: Impact on Health
Proteins: Essential Functions and Role in Physical Activity
1. Functions of Proteins:
- Formation of cells and tissues (e.g., muscle)
- Aid in blood clotting
- Oxygen transport
- Muscle contraction to produce movement
- Formation of antibodies to defend the body
- Regulating the balance in cells
2. Proteins and Physical Activity:
Proteins do not represent a significant source of energy during physical activity. They only intervene in efforts lasting over 6 hours.
Vitamins and Minerals: Importance for Health and Exercise
3.
Read MoreJoint Injuries: Sprains, Dislocations, Fractures & Bites
Joint Injuries: Sprains, Dislocations, and Fractures
Sprain: An incomplete tear of the joint capsule or ligaments, without rupture. It occurs when a torsional twist or violent stretch forces a joint beyond its normal range of motion, causing ligament damage or tearing.
Sprain Grades:
- Grade I (Mild): The ligament is strained, stretched beyond its normal capacity but remains intact. There is no hematoma.
- Grade II (Moderate): A partial tear of the ligament occurs, resulting in bruising and swelling.
- Grade
Intramural and Extramural Sports: Principles and Objectives
Intramural Sports Principles
Q1. Explain the principles of Intramurals.
Ans.
- Local Circumstances: The games should be popular in the school and the local area. Consider the availability of playgrounds and other suitable facilities.
- Good Quality Sports Equipment and Facilities: Use high-quality sports equipment to avoid injuries.
- Interest: Select activities based on student interest to increase participation and enjoyment. Activities should align with student preferences, facilities, and community.
- Budget:
Classification of Sports and Physical Activities
Current sports and physical activities can be classified using two parameters:
- Scope of Action: Activities are grouped according to the professional arenas and social sectors involved.
- Circulation Model: Activities are grouped according to the model of choice or emotional reason that has made the choice for practitioners.
Sport Performance or Competitive
Practices included in this group depend on two factors: the economic cost (as some sports carry a high economic cost, as the necessary materials and
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