Lab 7

Physical Activity & Health Lab 7 SPS3111

Overview

Focus on the significant impact of physical activity on preventing and managing musculoskeletal diseases, as well as protocols for effective workplace testing to ensure employee well-being.

Musculoskeletal Conditions

Acute and Chronic Conditions

  • Musculoskeletal conditions can be categorized into acute injuries, such as sprains and fractures, and chronic conditions, including arthritis, osteoporosis, and repetitive strain injuries.

  • Trauma-related injuries often lead to long-term physical limitations and increased healthcare costs, highlighting the importance of preventative measures through physical activity.

  • High prevalence of musculoskeletal disorders significantly impacts population health by leading to disability, chronic pain, and increased healthcare utilization.

  • Conditions linked to sedentary lifestyles include osteoporosis, osteoarthritis, and low back pain, emphasizing the necessity of regular physical activity for prevention and management.

Rheumatoid Arthritis (RA)

  • RA is a chronic, systemic inflammatory disease that primarily affects the synovial joints. It is characterized by the infiltration of immune cells leading to synovial inflammation.

  • Gender disparity exists in RA prevalence, with women affected approximately four times more than men, typically presenting between ages 30 and 60.

  • Symptoms often include persistent pain, morning stiffness, swelling, and warmth in multiple joints, which may lead to joint deformities over time if untreated.

  • RA notably decreases functional capacity by reducing range of motion, muscle strength, and aerobic capacity, which can hinder daily activities and overall quality of life.

Osteoarthritis (OA)

  • OA involves localized degeneration of articular cartilage and resultant bone changes at joint surfaces, leading to pain and decreased mobility.

  • It is more prevalent in individuals over 50, particularly affecting women, those who are overweight or obese, and persons with history of joint injuries.

  • Importance of Exercise: Aerobic exercises, including walking, cycling, and swimming, can significantly enhance both physical fitness and emotional well-being. Such exercises help in reducing joint pain and stiffness and improving overall joint function.

  • Flexibility and range of motion exercises are critical for maintaining joint lubrication and enhancing tissue extensibility, reducing the risk of injury.

Exercise Guidelines

  • Initiate exercise programs at a low intensity, especially for clients who are unaccustomed to physical activity, to prevent exacerbation of symptoms.

  • Continuous monitoring of joint pain is essential post-exercise, as it serves as a valuable measure of exercise intensity and overall response to physical activity.

Assessment of Pain and Functionality

Pain Reporting

  • Effective pain assessment includes self-reporting questionnaires, visual analogue scales, and marking painful areas on anatomical diagrams to identify pain patterns and severity.

Measuring Functionality

  • Functional assessments may include:

    • 6-minute walk tests to evaluate endurance and mobility.

    • Low back flexibility tests (such as the sit & reach test) to assess lumbar spine flexibility.

    • Chair rising tests performed for 30 seconds to determine lower extremity strength and endurance.

    • Assessment of climbing stairs and measured walking speed to evaluate lower limb functionality.

    • Goniometric measurements for assessing flexibility at various joints, including a valid shoulder flexibility test called the forward reach test.

Muscle Function Measurement

  • Muscle strength is measured isometrically, isotonically, and isokinetically to determine overall muscle performance.

  • Aerobic capacity is assessed through sub-maximal tests for clients with high severity levels and symptom-limited graded exercise tests focusing on pain and fatigue responses.

Workplace Assessments

Purpose

  • Conduct risk assessments to enhance job safety and identify potential hazards in the workplace.

  • Aims to:

    • Reduce the incidence of workplace accidents and subsequent workers’ compensation claims.

    • Manage absenteeism related to musculoskeletal issues, contributing to overall organizational efficiency.

    • Minimize potential legal liabilities associated with workplace injuries.

Postural Assessment

Importance

  • Assessments are essential to identify poor posture that may develop due to prolonged periods of sitting, heavy lifting, and habitual activities.

  • Gradual changes in muscle and tendon structures due to these habits can lead to chronic musculoskeletal pain and discomfort.

Examination Procedures

  • Use of a plumb line for comprehensive alignment analysis helps to check deviations from normal posture in anterior, lateral, and posterior views, ensuring an objective assessment of postural health.

Common Postural Deviations

  • Kyphosis-Lordosis: Characterized by excessive curvature in the lumbar and cervical regions, often associated with tightness in neck extensors and hip flexors.

  • Sway-back: Exhibits increased thoracic kyphosis and posterior pelvic tilt, with tightness in the upper abdominal muscles.

  • Flat back: Associated with tight neck extensors and abdominals, as well as weakness in neck flexors and back extensors.

  • Scoliosis: Involves abnormal lateral curvature of the spine, which can lead to imbalances and pain.

Gait and Alignment Issues

Genu Varum and Genu Valgum

  • Genu Varum (Bowlegs): Characterized by knee separation, often resulting in hyperextension and associated foot conditions.

  • Genu Valgum (Knock-knees): Involves hip adduction and knee obliquity, potentially leading to tracking issues and discomfort.

Testing Techniques

Grip Strength

  • Proper adjustment of the dynamometer is crucial before conducting strength tests. Participants should be appropriately positioned, with arms relaxed to ensure accurate maximal contractions.

Respiratory Function Testing

  • Ensures the accuracy of test results by maintaining correct oral inhalation and expiration techniques, while also ensuring the participant's posture is stable throughout testing.

Conclusion

The emphasis on understanding physical activity's role in preventing and managing musculoskeletal diseases, along with the importance of proper assessment and testing techniques, is fundamental for improving health outcomes in both clinical and occupational settings.