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Muscular system
 

Muscular system

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    Muscular system Muscular system Presentation Transcript

    • Skeletal Muscle System
    • Learning Outcomes• Characteristic of Muscle Tissue• Function of Skeletal Muscles• Types of Muscle Fibres• Muscle Name• Modes of Muscle Contraction• Benefits of Strength Training• Ways to train your Muscles• Types of Stretching• How to stretch your muscles
    • Characteristics of Muscle Tissue• Excitability• Contractility• Extensibility• Elasticity
    • Excitability• A process where muscle tissues in our body send signals to the brain and the brain tells the body to move out• All this happen within a fraction of a second
    • Contractility & Extensibility• Our muscle work by contraction• After muscle contracts, it must extend to release energy which it had stored• Hence, muscles work in pair
    • Elasticity• If muscles were not elastic, we would have been longer and taller with each extension.• Elastic to a certain limit• Beyond which it will break
    • Function of Skeletal Muscles• Produce Movement• Maintain posture• Maintain body temperature
    • Produce Movement• Muscles contract to pull on tendons and moves the bones
    • Maintain Posture and Body Position• Tension in our skeletalmuscles maintainsbody posture
    • Maintain body temperature• Muscle contraction require energy• Heat release by working muscles keep our body temperature in the range for normal functioning
    • How a muscle look like
    • Does it look like the meat we are eating?
    • At the microscopic level
    • Watch the video onmuscle composition n contraction
    • 2 types of muscle fibre• Fast twitchDo not need oxygen to create energy,Can produce faster movementTired out easilyEg: Sprinting, jumping• Slow Twitch (Enduring Sports)Need oxygen to create energy(Stored of glycogen)Slower production of movementSustain longerEg: Jogging, Tai Chi
    • Muscles Name
    • Trapezius (Neck) Pectorals (Chest) Deltoids(Shoulder)Biceps Triceps (Back of arm)(Front of arm) Latissimus Dorsi (Wing) Gluteals (Backside) Abdominals (Stomach)Quadriceps (Thigh) Hamstring (Back of leg) Gastrocnemius (Calf)
    • Modes of muscle contraction• Concentric• Eccentric• Isometric
    • Concentric ContractionTension > forceEg: Lifting a weightMuscle length shortens
    • Eccentric ContractionForce > TensionEg: Lowering a weightMuscle length lengthens under control
    • Isometric ContractionForce = TensionEg: Holding a weightMuscle length constant and unchange
    • Benefits of Strength Training• Improve physical performance due to increase in muscles’ size, strength and endurance• Improved physical appearance
    • Benefits of Strength Training• Increased Metabolic Efficiency(Ability to burn excess calories)
    • Benefits of Strength Training•Decrease risk of sustaining injury(Sprains and strains) Can hold our joints strongerNote: When training, we need to train opposing muscle groupto prevent unbalance muscle development
    • Ways to train your muscles TrapeziusDumbbell Shrugs Upright Rowing You can use 1.5L water bottle instead of dumbbells
    • Look at theTrapezius!
    • Ways to train your muscles Deltoids Lateral Raises
    • Nice Deltoids
    • Ways to train your muscles PectoralsBenchpress Wide hand push up
    • Ways to train your muscles Biceps Biceps Curls
    • Ways to train your muscles TricepsTriceps Extension Dips
    • Nice Triceps
    • Ways to train your muscles Latissimus Dorsi Chin UpsLat Pulldown
    • Nice wings Do you know who is he? Bruce Lee 27 November 1940 – 20 July 1973
    • Ways to train your muscles Gluteals Butt kickbackSquat exercises
    • Ways to train your muscles AbdominalsCrunches Nice abdominalsLeg raises
    • Ways to train your muscles QuadricepsLegExtensions
    • Ways to train your muscles Hamstring Hamstring Curl
    • Ways to train your muscles GastrocnemiusCalf Raises on Leg Press Machine Calves Raisers
    • Why is stretching important?• Increases flexibility and lessen risk of injuries• Reduces stiffness after exercise• ‘Shiok’ feeling
    • Types of stretching• Static• Passive• Dynamics• Ballistics
    • Static Stretching• Hold a stretch position for at least 15 sec• No bouncing or rapid movement• A mild pulling sensation is felt• No pain is felt
    • Passive Stretching• Same as static stretching but with the help of a partner
    • Dynamic Stretching• Controlled movement to take you to your limits of range of motion• No bouncing or rapid movement• Eg: Controlled leg swings, arm swings or torso twists
    • Ballistic Stretching• Use momentum of a body• To force it beyond it normal range of motion• Bouncing in and out of a stretched positionEg: bouncing to touch your toes
    • How to stretch your musclesHamstring Stretch Calf StretchGluteals Stretch Quadriceps Stretch
    • How to stretch your musclesAbdominal Stretch Latissimus Stretch (Cobra Stretch) Pectoral Stretch
    • How to stretch your muscles Bicep StretchDeltoids Stretch Tricep Stretch
    • How to stretch your muscles Neck Stretch
    • ImportantAlways seek advice from your medicaldoctor before you begin on any form of strenuous exercise