Flexibility

FLEXIBILITY

  • Definition of Flexibility

    • "The ability to move a joint through its complete ROM (Range of Motion)."

    • Important for:

    • Athletic Performance

    • Activities of Daily Living (ADLs)

    • Note: No single test can evaluate total body flexibility.

OUTLINE

  • Overview of flexibility concepts:

    • What is Flexibility?

    • Factors affecting flexibility

    • Measuring flexibility

    • Types of Stretching

    • High Risk Stretches

FACTORS AFFECTING FLEXIBILITY

  • Muscle and Fat Condition

    • Hypertrophied muscles or excessive subcutaneous fat can limit flexibility.

    • Routine stretching can alleviate these conditions.

  • Aging

    • Aging itself does not directly reduce flexibility.

    • Reduced flexibility is often due to decreased activity and arthritic conditions.

  • Gender Differences

    • Women tend to be more flexible than men, attributed to:

    • Pelvic structure

    • Hormonal factors

    • Gender affects connective tissue laxity.

  • Physical Activity Levels

    • Higher physical activity levels increase flexibility.

    • Repetitive patterns or habitual body posture can restrict ROM (Range of Motion).

    • Example: Joggers may require additional stretches for hamstrings and low-back muscles.

  • Joint Structure

    • The shapes of articulating bone surfaces can impact flexibility:

    • Double-joint (hypermobile) individuals may have greater flexibility.

  • Tissue Characteristics

    • Relative laxity or extensibility of the collagenous tissues and muscles crossing a joint is a factor.

  • Temperature

    • Warmer muscles and tissue generally exhibit better flexibility.

  • Types of Activity/Stretching

    • Different types of physical activity or stretching techniques can influence flexibility levels.

MEASURING FLEXIBILITY

  • Measurement Methods

    • Laboratory tests quantify flexibility in terms of ROM expressed in degrees.

    • Common devices for measurement include:

    • Goniometer

    • Electrogoniometer

    • The Leighton Flexometer

    • Inclinometer

    • Tape measure

  • Measurement Standards

    • Conducting accurate tests includes:

    • Aerobic warm-up

    • Equipment familiarization

    • Strict posture maintenance

    • Full ROM engagement

    • Consistent order of events.

    • Flexibility should always be measured last in a testing sequence.

SIT-AND-REACH TEST

  • Purpose of the Test

    • Commonly used to assess low back and hamstring flexibility.

    • It better measures hamstring flexibility than low back flexibility.

    • Supports the importance of hamstring flexibility in ADLs and sports performance.

  • Pretest Instructions

    • Warm-up without fast, jerky movements; shoes should be removed.

    • Test Procedure:

    1. The client sits with feet flat against the sit-and-reach box (zero mark at 26 cm). Feet's inner edges should be apart by 6 inches (15.2 cm).

    2. Reach forward slowly with both hands, holding the position for approximately 2 seconds without bouncing. Fingertips should be in contact with the measuring portion or yardstick of the sit-and-reach box.

    3. Score based on the furthest point reached with the fingertips, recording the best of two trials.

    • To maximize performance, have the client exhale and drop the head between the arms when reaching. Ensure knees remain extended without being pressed down.

  • Fitness Categories Based on Sit-and-Reach Test

    • Categorization across different ages and sexes using cm norms from the test results.

    • Table 4.13 outlines fitness categories and corresponding score ranges for males and females across various age groups:

    • Excellent: ≥40 cm (age 20-29) for men; ≥41 cm for women.

    • Very Good: 34-39 cm for men; 37-40 cm for women, etc.

TYPES OF STRETCHING

  • Ballistic Stretching

    • Involves quick, bouncing-type stretches.

  • Static Stretching

    • Involves maintaining a slow, controlled, sustained stretch over a duration (usually about 30 seconds).

  • Dynamic Stretching

    • Involves controlled motions rather than bouncing.

  • Proprioceptive Neuromuscular Facilitation (PNF) Stretching

    • Techniques involve alternating contraction and relaxation of the muscles being stretched.

    • Basic phases: Stretch – Contract – Stretch.

    • PNF requires equipment or a partner and manipulates the Golgi Tendon Organ (GTO) and muscle spindle.

    • Provides an acute increase in flexibility and is deemed the most effective method to enhance flexibility.

HIGH RISK STRETCHES

  • Stretches that are contraindicated:

    • Standing toe stretch

    • Barré stretch

    • Hurdler’s stretch

    • Neck circles

    • Yoga plow

  • Recommended alternative stretches:

    • Seated toe or modified Hurdler’s stretch

    • Non-twisting directional stretch

SUMMARY

  • Key topics covered include:

    • Definition and importance of flexibility

    • Factors affecting flexibility levels

    • Methods of measuring flexibility

    • Specific stretching techniques - including PNF

    • Identification of high-risk stretches and safer alternatives.