Presentation on theme: "What is Flexibility? Flexibility is the ability of a joint to move through its range of motion Flexibility involves your bones, joints, surrounding tissue,"— Presentation transcript:
What is Flexibility? Flexibility is the ability of a joint to move through its range of motion Flexibility involves your bones, joints, surrounding tissue, nervous system, but most importantly your muscles Bicep Muscle Radius Bone Ulna Bone Hinge Joint Ulnar Nerve Tendon Humerus Bone
Flexibility is highly adaptable, and is increased through stretching exercises. Muscles/joints can also become less flexible (reversibility) Stretching is a type of physical activity done with the intent of improving flexibility.
Benefits of Flexibility and Stretching Exercises Which benefits would help you? Joint Health Protection against low-back pain and injuries Reduction of post-exercise muscle soreness Potential relief of aches and pains Improved posture Improve athletic performance Enhances range of motion Relaxation
What Determines Flexibility #1 JOINT - Structure A joint is where two bones come together. 3 Types of Joints Fibrous Joint (Syndesmoses) Rigid (sutures of the skull) Cartilaginous (Synchrondoses) Allows slight movement (pubic bones meet) Synovial Joints (Diathrodial) Very mobile. Joints have lots of movement
Synovial Joints- Joints used in movement
Oval Ball and Socket Joint
Ball and Socket
#2 Muscle Elasticity and Length Determines Flexibility Muscle tissue can be lengthened if regularly stretched To increase the length of a muscle, you must stretch it more than its normal length (overload) but not over stretch it.
#3 Nervous System Activity Determines Flexibility Muscles contain stretch receptors that control their length When a muscle is first stretched, a reflex causes the muscle to contract, to resist the change in length. If the stretch is maintained, the stretch reflex subsides and muscles can be stretched beyond its normal length.
15 #4 Uncontrollable Risk Factors Determine Flexibility Age Old Vs. Young Gender Girls Vs Boys AND
Types of Stretching Static Stretching Stretching muscles until tight and hold for several seconds Ballistic Stretching Quick gentle bouncing type of bobbing motion held for a few seconds PNF exercises that contract and relax at the same time
FITT Formula F -Stretch 3-7 days per week I – Muscles must be stretched beyond its normal length (overload). Muscles should feel tight but NOT painful. T - Be sure to use correct technique for each stretch, hold each stretch for seconds, and perform at least 3-4 repetitions T- Ballistic, Static, PNF (proprioceptive neuromuscular facilitation)
Muscles Needing The Most Stretching There are hundreds of exercises that can improve flexibility Your program should include exercises that work all the major joints of the body by stretching their associated muscles Chest muscles Calf Muscles Front of shouldersLower Back Hip JointInside of thighs HamstringsTrunk muscles
Assessing Flexibility in Physical Education Class Flexibility is specific to each joint There are no specific tests to measure general flexibility Sit-and-reach test measures flexibilitySit-and-reach of joints in the lower back and hamstrings Zipper test measures flexibility of joints in the shoulders Trunk Lift test measures flexibility of lower back.
Summary Flexibility is highly adaptable and specific to each joint Benefits include reducing the risk of injury, and preventing abnormal stresses that lead to joint deteriorations Range of motion can be limited by joint structure, muscle elasticity, and stretch receptor activity Developing flexibility depends on stretching the elastic tissues within muscles regularly