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Fitness Exam 2 5
Fitness Exam 2
Question | Answer |
---|---|
Flexibility | The ability to move joints freely through their full range of motion |
Five structural limitations to movement | 1. The shape of bones 2. Stiff muscles 3. Connective tissues (ligaments & cartilage) 4. Tendons 5. Tight skin |
Benefits of Flexibility | • Increased joint mobility • More efficient body movement • Better posture • Prevents lower back pain (LBP) –Hypokinetic disease |
Posture | The position of your joints that you hold while standing or sitting |
Good posture: body in alignment | Holding positions that place the least amount of strain on supporting muscles and ligaments of a joint |
Bad posture: body out of alignment | Holding positions that stretch muscles on one side of joint, while shortening them on other side (over time leads to pain/joint damage) |
Routine strength and flexibility exercises help | correct imbalances and prevent future problems |
Benefits of good posture:(1) | –Minimizes joint wear and prevents arthritis –Reduces stress on the ligaments in the spine –Prevents spinal nerve stress/associated pains –Prevents muscle fatigue(2) |
Benefits of good posture:(2) | –Prevents strains or overuse problems –Prevents backache and muscular pain –Contributes to good appearance (2) |
Assessing Flexibility | No single test can measure total body flexibility |
Sit-and-reach test | –Measures ability to flex the trunk –Focuses on lower back muscles & hamstrings |
Shoulder flexibility test | –Measures range of motion at the shoulder |
FITT for Flexibility | • Prescription will vary depending on initial flexibility level • Exercises should be static or PNF stretches |
• Starter phase | – Frequency: 2 sessions per week – Intensity: 5-minute session/hold for 10 seconds/mild discomfort – Time/duration: 3 weeks |
• Slow progression phase | – Frequency: 3–4 sessions per week – Intensity: 10–30-minute sessions/hold for 15–30 seconds/mild discomfort – Time/duration: 6–12 weeks |
• Maintenance phase | – Frequency: 4–5 sessions per week – Intensity: 30-minute sessions/hold stretches up to 30 seconds – Time/duration: start after about week 16 depending on progress |
• Dynamic stretching | – Goal is to prepare body to exercise – Conducted prior to exercise and highly recommended – Fluid, controlled motion of joint through full ROM – Increases blood flow to muscles/joints – Increases neuromuscular activity between CNS and PNS |
• Ballistic stretching | – Rapid, forceful, bouncing movements – More likely to cause injury and thus not recommended |
• Static stretching | – Goal is to increase flexibility and recover from exercise – Most effective method to increase flexibility at end of exercise, not prior to exercise – Slow lengthening of muscles, held for fixed periods |
• Proprioceptive neuromuscular facilitation (PNF) | – Series of motions combining stretching with alternately contracting and relaxing muscles • Relies on contract-relax (CR) and contract- relax/antagonist contract (CRAC) stretching |