chap 16 stretching
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Stretching and Warm-Up
Chapter Outline
Warm-up
Types of stretching
FlexibilityFactors affecting flexibilityFrequency, duration, and intensity of stretchingWhen should an athlete stretch?Proprioceptors and stretching
A proper warm-up is specific to the sport or
activity, and stretching is an integral part of any warm-up. The warm-up prepares the athlete for practice or competition and decreases the risk of injury.
Factors Affecting Flexibility
Joint structure
Activity level
Age and sexConnective tissueWeight training with limited range of motionMuscle bulk
Frequency, Duration, and Intensity of Stretching
Each practice session should be preceded by 5 to 6 minutes of general warm-up and 8 to 12 minutes of sport-specific stretching.
Individual stretches should be held to the point of mild discomfort, but not pain, for 30 seconds.
Sessions should conclude with 4 to 5 minutes of stretching.
When Should an Athlete Stretch?
Before practice and competition
Following practice and competition
Types of Stretching
Static stretch
Proprioceptive neuromuscular facilitation (PNF) stretch
Ballistic stretchDynamic stretch
Chap 16 Definitions
• General Warm-Up: 5-10 min slow jogging or riding a stationary bicycle increases heart rate, blood flow, deep muscle temperature, respiration rate, viscosity of joint fluids and perspiration. This increase in muscle temperature allows greater amount of flexibility.
• Specific Warm-Up: Incorporates movements similar to the athlete’s sport. Involves 8-10 min of activity or sport specific stretches, such as shoulder stretches for volleyball or baseball
• ROM: Range of motion is affected by connective tissue structure, activity level, age and gender.
Static & Dynamic Flexibility
• Static Flexibility: Requires no voluntary muscular activity. An external force such as gravity or a partner provides the force to stretch.
• Dynamic Flexibility: Requires voluntary muscular action.• Static Flexibility provides GREATER ROM than dynamic
flexibility.
Proprioceptors and Stretching
• Stretch Reflex: During a rapid stretching movement the Ia fibers from the muscle spindle cause increased activation of the muscle that was stretched and its synergist. This causes the muscle to shorten. THIS SHOULD BE AVOIDED
• Careful static stretching does not invoke the stretch reflex• Mechanoreceptor: GTO is sensitive to muscle tension. When
stimulated it causes the muscle to relax.
Autogenic Inhibition & Reciprocal Inhibition
• Autogenic Inhibition: Relaxation in the same muscle that is experiencing increased tension. Autogenic inhibition is accomplished by actively contracting a muscle immediately before a passive stretch of the same muscle.– Tension built up during the active contraction stimulates the GTO,
causing a reflexive relaxation of the muscle during the subsequent passive stretch.
• Reciprocal Inhibition: Relaxation that occurs in the opposing muscle experiencing increased tension.– This is accomplished by simultaneously contracting the muscle
opposing the muscle being passively stretched.– The tension in the contracting muscle stimulates the GTO and causes
simultaneous reflexive relaxation of the stretched muscle
Types of Stretching
• Static Stretch: A slow constant stretch with the end position held for 30 sec.
• Ballistic Stretch: Involves active muscular effort and uses a bouncing motion in which the position is not held.
• Dynamic Stretch: involves flexibility during sport-specific movements. Similar to ballistic in that it utilizes speed of movement, but avoids bouncing.
• PNF: Usually performed with a partner and involve both passive movement and active (concentric and isometric) muscle actions.
• PNF may be superior to other stretching methods because they facilitate muscular inhibition.
Ch. 2 (TLTP) The Ballistic Warm-Up
• Muscle Viscosity – As the Blood flow to the muscle increases, it warms the muscle up and makes it more flexible.
Dynamic Flexibility
• Goals – Become warmed– Flexible– Rehearsal of activities
on the field• Teach proper
mechanics
• Series of bounds, hops, skips, runs, and ballistic stretches
• Gradual progression– Joint mobility –
ballistic stretches – Flex runs/skipping – multidirectional activity – power moves
Ch. 4 (TLTP) Stretching and Flexibility
• Reduce tension in the hips and glutes– Increase Speed
Dynamic & Static• Increase Core Temp,
Muscle Temp. and Blood Flow
• Used before as a warm-up before Running
• Slow small motions to Large & fast movements
• Should break a slight sweat
• Holding a stretch for 8-15 sec.• Always done after a thorough
warm-up• Must exhale and relax as
eased into the hold position• Typically done after running,
but before lifting– Cool Down– Allow the body time to rid
itself of lactic acid – Be limber and Flexible for
Resistance Training
Stretching & Flexibility:The Bottom Line
• Spend more time on need areas• The key is frequency• Stretch every day• Stretch before bed
– Increases blood flow and circulation• MUSCLES ARE FLOOODED WITH NUTRIENT RICH
BLOOD• HELPS REPAIR AND RECOVER FATIGUED MUSCLES• Sleep better – stretching releases endorphins; make you feel
relaxed and loose.
Begin with a passive pre-stretch 10 sec
Partner applies force & athlete holds to ‘resist’ the movement 6 sec
Athlete relaxes and a passive stretch is held for 30 sec
Hold-Relax PNF
The final stretch should be of greater magnitude due to autogenic inhibition
Begin with a passive pre-stretch 10 sec
Athlete does a concentric contraction thru a a full ROM against resistance
Athlete relaxes and a passive stretch is held for 30 sec
Contract-Relax PNF
The final stretch should be of greater magnitude due to autogenic inhibition
Begin with a passive pre-stretch 10 sec
Partner applies force & athlete holds to ‘resist’ the movement 6 sec
Athlete contracts the agonist (quads) to provide additional stretching force and a passive stretch is held for 30 sec
Hold-Relax with Agonist Contraction PNF
The hold-relax with agonist contraction PNF technique is the most effective due to facilitation via both reciprocal inhibition and autogenic inhibition
Starting Position of PNF Hamstring Stretch
Leg and Hand Positions for PNF Hamstring Stretch
Passive Pre-Stretch of Hamstrings During Hold-Relax PNF Hamstring Stretch
Isometric Action During Hold-Relax PNF Hamstring Stretch
Increased ROM During Passive Stretch of Hold-Relax PNF Hamstring Stretch
Passive Stretch of Hamstring During Contract-Relax PNF Stretching
Concentric Action of Hip Extensors During Contract-Relax PNF Stretch
Increased ROM During Passive Stretch at Contract-Relax PNF Stretch
Passive Stretch During Hold-Relax With Agonist Contraction PNF Hamstring Stretch
Isometric Action of Hamstring During Hold-Relax With Agonist Contraction PNF Hamstring Stretch
Concentric Contraction of Quadriceps During Hold-Relax With Agonist Contraction PNF Hamstring Stretch Creating Increased ROM During Passive Stretch
Partner PNF Stretching for the Calves
Partner PNF Stretching for the Chest
Partner PNF Stretching for the Groin
Partner PNF Stretching for the Quadriceps and Hip Flexors
Partner PNF Stretching for the Shoulders
Stretching Techniques: Neck
Rotation of the neck to the right Rotation of the neck to the left
Look Right and Left
Stretching Techniques: Neck
Neck flexion Neck extension
Flexion and Extension
Stretching Techniques: Shoulders and Chest
Stretching the shoulder joints—standing
Straight Arms Behind Back
Stretching Techniques: Shoulders and Chest
Stretching the shoulder joints—seated
Seated Lean-Back
Stretching Techniques: Posterior of Upper Arm
Stretching the triceps
Behind-Neck Stretch (Chicken Wing)
Stretching Techniques: Upper Back
Stretching the upper back
Cross Arm in Front of Chest
Stretching Techniques: Upper Back
Stretching the upper back
Arms Straight Up Above Head (Pillar)
Stretching Techniques: Lower Back
Stretching the lower back and sides
Spinal Twist (Pretzel)
Stretching Techniques: Lower Back
Stretching the lower back from a seated position
Semi-Leg Straddle
Stretching Techniques: Hips
Stretching the hip flexors
Forward Lunge (Fencer)
Stretching Techniques: Hips
Stretching the gluteals and hamstrings
Supine Knee Flex
Stretching Techniques: Torso
Stretching the sides and upper back
Side Bend With Straight Arms
Stretching Techniques: Torso
Stretching the sides, triceps, and upper back
Side Bend With Bent Arm
Stretching Techniques: Anterior of Thigh and Hip Flexor
Stretching the quadriceps
Side Quadriceps Stretch
Stretching Techniques: Posterior of Thigh
Stretching the low back, hamstrings, and calves
Sitting Toe Touch
Stretching Techniques: Posterior of Thigh
Stretching the low back, hamstrings, and calf
Semistraddle (Figure Four)
Stretching Techniques: Groin
Stretching the hamstrings and hip adductors
Straddle (Spread Eagle)
Stretching the hamstrings, hip adductors, and lower back
Stretching Techniques: Groin
Stretching the hip adductors
Butterfly
Stretching Techniques: Calf
Stretching the calves
Wall Stretch
Stretching Techniques: Calf
Stretching the calf standing on a step
Step Stretch
Preparing to stretch the Achilles tendon by slightly bending the knee
Stretching the Achilles tendon by lowering the heel