PHTY8100 ASPA Week 1 Tutorial Notes (Bullet Points)

Week 1 Tutorial Notes – PHTY8100 ASPA

Age-specific physical activity guidelines (Children and young people)

• Summary scope: Age-based recommendations for physical activity, sedentary behavior, screen time, and sleep. See Page 2 excerpt from transcript.
• Important note: Values are taken directly from the transcript and presented as bullet points; some lines are garbled in the source text, so where entries are unclear, I’ve indicated explicitly when a category is not clearly separated.

Under 12 months

• Physical activity: Interactive floor-based play, and at least $30$ minutes of tummy time per day. $30$ minutes.
• Strength: Not explicitly stated in the accessible portion; effectively not specified in the excerpt provided.
• Sedentary time (restraint): Do not restrain for more than $1$ hour at a time. $1$ hour.
• Recreational screen time: Under 2 years: None.
• Sleep: Sleep guidance appears across multiple lines; in the excerpt: 0 to 3 months: $14$ to $17$ hours; 4 to 11 months: $12$ to $16$ hours (including naps); some will still need naps. (The layout is garbled; these are the likely intended ranges.)

1 to 2 years

• Physical activity: At least $3$ hours of energetic play per day. $3$ hours/day.
• Strength: Do not restrain for more than $1$ hour at a time. $1$ hour.
• Sedentary time / screen time: 2 years: No more than $1$ hour per day of recreational screen time (interpreting the line through the garbled table). The excerpt also mentions: Do not restrain for more than $1$ hour at a time. (Text suggests limits on restraint duration and screen exposure.)
• Sleep: Not clearly separated in the garbled lines for this age group beyond general pediatric guidance; the excerpt later references 4–11 months for sleep hours.

3 to 5 years

• Physical activity: At least $3$ hours per day, with $1$ hour being energetic play. $3$ hours/day with $1$ hour energetic.
• Sedentary time / screen time: Minimise and break up long periods of sitting; No explicit daily maximum on screen time is clearly stated in the garbled portion for this age; the line "Minimise and break up long periods of sitting" is present.
• Sleep: Not explicitly broken out in the garbled lines; typical guidance aligns with infant/adolescent ranges elsewhere in the excerpt.

5 to 17 years

• Physical activity:
  • Vigorous activities should be incorporated at least $3$ days per week. $3$ days/week.
  • Several hours of light activities per day. $Several$ hours/day (qualitative).
  • At least $3$ days a week (likely referring to vigorous or strength-related guidelines).
• Sedentary time / screen time: No explicit single-number daily max in the garbled section; another line states "No more than 2 hours per day" in the context of screen-related guidance (likely for older children/adolescents). The content also contains "Minimise and break up long periods of sitting" similar to the younger age groups.
• Sleep: $5$ to $13$ years: $9$ to $11$ hours. $9$--$11$ hours.
  $14$ to $17$ years: $8$ to $10$ hours. $8$--$10$ hours.

Note: The transcript’s page 2 table is partially garbled, blending multiple age bands and categories. The notes above preserve the explicit numbers present, while indicating where the structure is unclear.

General/Cross-cutting themes for children and youth

• Emphasis on variety: mix of light, moderate, and vigorous activities; incorporation of energetic play.
• Break up sedentary time: reduce long bouts of sitting across age groups.
• Screen time limits: explicit limits exist for younger ages (e.g., none under 2 years; limited to around 1 hour for some toddlers). The exact thresholds for older children in the excerpt are less clear due to formatting.
• Sleep as a key component alongside activity and sedentary behavior; ranges vary by age.

Examples of activity intensities (Page 3)

• The page title indicates examples of light, moderate, vigorous, and strength activities in children. The transcript does not include the actual example list, just the heading, so note that examples exist in the source but are not reproduced here.

Adult guidelines (Page 4)

• Age group: Adults 18 to 64 years
  • Physical activity: Be active on most (preferably all) days, to a weekly total of: $2.5$ to $5$ hours of moderate activity or $1.25$ to $2.5$ hours of vigorous activity or an equivalent combination of both.
  • Strength: At least $2$ days/week.
  • Sedentary time: Minimise and break up long periods of sitting.
• Age group: Pregnancy
  • Be active on most (preferably all) days, to weekly total of: $2.5$ to $5$ hours of moderate activity or $1.25$ to $2.5$ hours of vigorous activity or an equivalent combination of both.
  • Do pelvic floor exercises.
  • Strength: At least $2$ days a week.
  • Sedentary time: Minimise and break up long periods of sitting.
• Age group: 65 years and over
  • At least $30$ minutes of moderate activity on most (preferably all) days.
  • Do a range of activities that incorporate fitness, strength, balance and flexibility.

Physical Activity Log – James Bond (Agent 007) (Page 5)

• Purpose: Example of a daily activity log with duration and intensity; includes personal reflections.
• Entries:
• 1) Date: Monday; Activity: Morning swim in the Mediterranean after escaping a yacht explosion; Duration: $45$ mins; Intensity: Vigorous; Personal Reflection: "Refreshing. Nothing like dodging torpedoes to get the heart rate up."
• 2) Date: Tuesday; Activity: Parkour chase across rooftops in Marrakesh; Duration: $60$ mins; Intensity: Vigorous; Reflection: "Lost the target, but gained a new appreciation for Moroccan architecture."
• 3) Date: Wednesday; Activity: Hand-to-hand combat training with MI6 instructors; Duration: $90$ mins; Intensity: Vigorous; Reflection: "They’re getting better. Or I’m getting older."
• 4) Date: Thursday; Activity: High-speed motorcycle pursuit through the Alps; Duration: $30$ mins; Intensity: Moderate; Reflection: "Cold wind, hot engine. Excellent core workout."
• 5) Date: Friday; Activity: Underwater infiltration of a secret base; Duration: $50$ mins; Intensity: Vigorous; Reflection: "Stealth swimming is underrated. So is holding your breath for 4 minutes."
• 6) Date: Saturday; Activity: Tango with a double agent in Buenos Aires; Duration: $25$ mins; Intensity: Light; Reflection: "Elegant, dangerous, and surprisingly good cardio."
• 7) Date: Sunday; Activity: Hike through Scottish Highlands to clear the mind; Duration: $2$ hours; Intensity: Moderate; Reflection: "Peaceful. No gunfire, no gadgets. Just me and the mist."

PA measurement devices (Page 6–8)

• ActivPAL
  • Type: Triaxial accelerometer and inclinometer; Waterproof.
  • Placement: Place on front of someone's thigh (usually upper third).
  • Algorithms: One algorithm only (single processing approach).
  • What it provides: Information around sedentary time.
  • Cost: Approximately $800$ USD.
  • Source: PA measurement devices section with link to ActivPAL images.
• ActiGraph (ActiGraph GT/others)
  • Type: Triaxial accelerometer.
  • Common use: Often used in sleep studies.
  • Placement options: Can be worn at the waist with a strap (or wrist) or at the ankle.
  • Water exposure: Splash proof, not waterproof.
  • Data issues: Can lose data if the device is taken off and not worn again.
  • Recording duration: Can collect information for up to $30$ days.
  • Population focus: Built for normal adult activity.
  • User inputs: Height, weight, side of dominance.
  • Data handling: Must choose an algorithm at the back end; several algorithms exist.
  • Output: Can collect data on sedentary bouts; provides time spent in moderate to vigorous physical activity (MVPA).
  • Cost: Approximately $400$ USD.
• StepWatch
  • Placement: Worn on the ankle with a band.
  • Target population: Designed with a rehab population in mind.
  • Output: Provides output on how quickly steps are taken (step frequency).
  • Limitation: Steps are counted from one leg only; to get total step count, multiply by $2$.
  • Special features: Has a specific output section for amputee populations.
  • Cost: Approximately $425$ USD.
  • Software: Additional cost for software – around $1300$ USD per research app on an iPad.

Other PA measurement devices (Page 7–8)

• Summary of capabilities and caveats:
  • Actigraphy devices (ActiGraph) can capture data over long periods; they require proper wear time; algorithm selection impacts data interpretation.
  • ActivPAL provides precise sedentary time data; more robust for postural detection (sitting vs standing).
  • StepWatch offers accurate step counting with frequency data but needs scaling for total leg movement and amputee considerations.

Research vs clinical use of activity monitors (Page 9)

• Wrist-worn devices have limited validity as outcome measures for research studies in some populations.
  • Exceptions: People who use their arms for locomotion (e.g., wheelchair users).
• Devices that don’t provide instant feedback to the participant are useful for research but less useful clinically.
• Overall implication: Choice of device depends on research vs clinical aims and the need for feedback and engagement.

Commercial devices (Page 10)

• Examples: Garmin, Fitbit, Oura Ring.
• History: Initially dedicated activity monitors; now widely used.
• User base: Patients, general population; familiar to users.
• Clinical relevance: Useful clinically and in real-world monitoring; often targeting healthy populations but applicable in clinical contexts as adjuncts.

Study: Accuracy of ActivPAL and Fitbit Charge 2 in measuring step count in Cystic Fibrosis (Page 11)

• Reference: Curran et al., Physiotherapy Theory and Practice, Online ahead of print (2021).
• Results:
  • ActivPAL: Under-estimated step count by 0.63 ext{%} across treadmill speeds and 1.1 ext{%} across self-selected walking speeds.
  • Fitbit Charge 2: Under-estimated step count by 2.97 ext{%} across treadmill speeds and by 6.3 ext{%} across self-selected speeds.
• Correlations with visual observations:
  • ActivPAL: Strong correlation, $r ext{ ranges from } 0.93 ext{ to } 0.99.$
  • Fitbit Charge 2: Ranges from weak to very strong, $r ext{ ranges from } 0.34 ext{ to } 0.84.$
• Discussion prompt from the study: "Is underestimating by 6% OK – in clinic? In research?" (raises practical validity questions).

Additional course notes (Page 12)

• Course/Week label: PHTY8100 ASPA WEEK – TUTORIAL CARDIORESPIRATORY ANATOMY, PHYSIOLOGY & MEASUREMENTS
• Week theme: Exposure of chest wall; dress appropriately; consult tutor if concerns.
• This page appears to introduce practical tutorial expectations and safety considerations rather than content on physical activity per se.

Connections to foundational principles and real-world relevance

• Activity guidelines reflect public health recommendations: balance activity, sedentary behavior, and sleep to support growth (in children) and health (in adults).
• Sedentary behavior is treated as an independent construct from physical activity; breaking up sitting is emphasized across ages.
• Use of objective monitors (ActivPAL, ActiGraph, StepWatch) illustrates how researchers quantify activity, sedentary time, and intensity, informing both research and clinical practice.
• The difference between research-grade devices and consumer/commercial devices highlights the trade-offs between accuracy, accessibility, feedback, and usability in real-world settings.
• The James Bond PA log provides a playful example of how to document activity, intensity, and personal reflections for motivation and self-monitoring.

Ethical, philosophical, and practical implications

• Data validity vs practicality: Wrist devices are convenient but may sacrifice precision for certain outcomes; researchers must select devices appropriate to their research questions and populations (e.g., wheelchair users).
• Feedback loops: Instant feedback (e.g., on consumer wearables) can influence behavior and engagement, which is beneficial clinically but can also introduce bias in research if not controlled.
• Equity and access: Commercial devices are popular but may not be suitable or accessible for all populations (cost, literacy, tech familiarity).
• Privacy: Wearable devices collect continuous data; ethical data handling and privacy considerations are essential in both clinical and research contexts.

Quick reference: Key numbers and symbols (LaTeX)

• Adult activity guidelines: $2.5$ to $5$ hours of moderate activity or $1.25$ to $2.5$ hours of vigorous activity per week (or an equivalent mix).
• Strength: at least $2$ days per week.
• Older adults (65+): at least $30$ minutes of moderate activity most days, plus fitness, strength, balance, and flexibility activities.
• Child/tediatric examples: $30$ minutes tummy time; $3$ hours energetic play (1–2 year); $1$ hour energetic play (3–5 year); $3$+ days/week vigorous (older children).

Note: The numbers above are transcribed from the provided material. Where the source text is garbled, I’ve indicated the most coherent interpretation and kept explicit values as shown. If you have access to the original PDF/slides, I recommend cross-checking these sections for precise wording and formatting.