WEEK 9- Nutrition- Team sports

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Last updated 7:12 AM on 10/14/26
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1
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Which team sports were listed as popular in Australia?

- Soccer

- Basketball

- Australian rules football

- Netball

- Cricket

- Rugby league

- Rugby union

- Hockey

- Water polo

- Volleyball

- Softball

2
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What are the key physiological characteristics of match play in team sports?

- Moderate-to-long duration: about 1-2 h

- Repeated bouts of high-intensity activity separated by rest or low-to-moderate activity

- Moderate-to-long match distances: about 8-15 km, depending on player position and game play

- Variable movement patterns, including:

- Walking

- Jogging

- Sprinting

- Jumping

- Lunging

- Tackling

- Energy is supplied by both:

- Anaerobic systems: phosphocreatine (PCr) and anaerobic glycolysis

- Aerobic system: carbohydrate (CHO) and fat

Key nutrition implication:

Carbohydrate intake is a priority because it contributes to both anaerobic and aerobic energy production.

3
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What are the three main macrocycles used to periodise nutrition in team sports?

1. Pre-season

2. In-season

3. Off-season

Pre-season:

- Energy and carbohydrate requirements are generally highest

In-season:

- Energy and carbohydrate requirements are generally higher on match days than on weekly training days

Also consider:

- Tournaments with consecutive matches

- Recovery and timing challenges

- Travel

- Positional differences within a sport

4
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<p>What did the AFL workload data show about pre-season versus in-season running demands?</p>

What did the AFL workload data show about pre-season versus in-season running demands?

Total distance examples:

Early pre-season main training:

- 10,116 m (9,760-10,472)

Late pre-season main training:

- 11,751 m (11,300-12,202)

Precompetition:

- Training: 8,690 m (8,489-8,892)

- Game: 9,502 m (9,177-9,838)

Rounds 1-5:

- Training: 7,202 m (7,067-7,337)

- Game: 13,182 m (12,922-13,442)

Rounds 6-11:

- Training: 6,930 m (6,797-7,063)

- Game: 13,250 m (13,019-13,483)

Rounds 12-17:

- Training: 7,120 m (6,968-7,272)

- Game: 13,310 m (13,046-13,557)

Rounds 18-EOS:

- Training: 6,340 m (6,188-6,491)

- Game: 13,439 m (13,193-13,684)

Summary rows:

- Preseason: training 8,690 m; game 9,505 m

- In-season: training 6,340 m; game 13,439 m

Lecturer explanation:

Pre-season training distances are generally higher because training volume is used to build fitness before the competitive season.


<p>Total distance examples:</p><p>Early pre-season main training:</p><p>- 10,116 m (9,760-10,472)</p><p>Late pre-season main training:</p><p>- 11,751 m (11,300-12,202)</p><p>Precompetition:</p><p>- Training: 8,690 m (8,489-8,892)</p><p>- Game: 9,502 m (9,177-9,838)</p><p>Rounds 1-5:</p><p>- Training: 7,202 m (7,067-7,337)</p><p>- Game: 13,182 m (12,922-13,442)</p><p>Rounds 6-11:</p><p>- Training: 6,930 m (6,797-7,063)</p><p>- Game: 13,250 m (13,019-13,483)</p><p>Rounds 12-17:</p><p>- Training: 7,120 m (6,968-7,272)</p><p>- Game: 13,310 m (13,046-13,557)</p><p>Rounds 18-EOS:</p><p>- Training: 6,340 m (6,188-6,491)</p><p>- Game: 13,439 m (13,193-13,684)</p><p>Summary rows:</p><p>- Preseason: training 8,690 m; game 9,505 m</p><p>- In-season: training 6,340 m; game 13,439 m</p><p>Lecturer explanation:</p><p>Pre-season training distances are generally higher because training volume is used to build fitness before the competitive season.</p><p></p>
5
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<p>How did in-season macronutrient intake differ between forwards and backs in the elite rugby union study?</p>

How did in-season macronutrient intake differ between forwards and backs in the elite rugby union study?

The study assessed carbohydrate, protein and fat intake from GD−5 to GD+1.

Key pattern highlighted:

- Backs increased carbohydrate intake about 2 days before game day.

- Forwards tended to increase intake closer to game day, about 1 day before.

The figure also reports:

- * Significant difference from GD−5, P < 0.05

- # Significant difference between forwards and backs, P < 0.05

Lecturer explanation:

This illustrates that nutrition should be periodised not only by day but also by positional demands.


<p>The study assessed carbohydrate, protein and fat intake from GD−5 to GD+1.</p><p>Key pattern highlighted:</p><p>- Backs increased carbohydrate intake about 2 days before game day.</p><p>- Forwards tended to increase intake closer to game day, about 1 day before.</p><p>The figure also reports:</p><p>- * Significant difference from GD−5, P &lt; 0.05</p><p>- # Significant difference between forwards and backs, P &lt; 0.05</p><p>Lecturer explanation:</p><p>This illustrates that nutrition should be periodised not only by day but also by positional demands.</p><p></p>
6
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<p>How do 'train high', 'train', 'train low' and 'rest' differ in nutrition periodisation?</p>

How do 'train high', 'train', 'train low' and 'rest' differ in nutrition periodisation?

TRAIN HIGH

What:

- High carbohydrate intake

- Moderate-high protein intake

Why:

- Better performance

- Good recovery

- GI-tract adaptations

- Reduced RPE

- Prevention of overreaching

When:

- High-quality training

- Hard training days

- Match day

TRAIN

What:

- Moderate carbohydrate intake

- Moderate-high protein intake

Why:

- Good recovery between sessions

- Focus on healthy nutrition

When:

- Normal training days

- Resistance training

TRAIN LOW

What:

- Low carbohydrate intake

- Moderate-high protein intake

Why:

- Mitochondrial adaptations

- Increased fat oxidation

- Promote overreaching

When:

- Mostly pre-season

REST

What:

- Low carbohydrate intake

- Moderate protein intake

Why:

- Recovery

- Focus on healthy nutrition

When:

- Rest days

DIAGRAM ON SLIDE 9

<p>TRAIN HIGH</p><p>What:</p><p>- High carbohydrate intake</p><p>- Moderate-high protein intake</p><p>Why:</p><p>- Better performance</p><p>- Good recovery</p><p>- GI-tract adaptations</p><p>- Reduced RPE</p><p>- Prevention of overreaching</p><p>When:</p><p>- High-quality training</p><p>- Hard training days</p><p>- Match day</p><p>TRAIN</p><p>What:</p><p>- Moderate carbohydrate intake</p><p>- Moderate-high protein intake</p><p>Why:</p><p>- Good recovery between sessions</p><p>- Focus on healthy nutrition</p><p>When:</p><p>- Normal training days</p><p>- Resistance training</p><p>TRAIN LOW</p><p>What:</p><p>- Low carbohydrate intake</p><p>- Moderate-high protein intake</p><p>Why:</p><p>- Mitochondrial adaptations</p><p>- Increased fat oxidation</p><p>- Promote overreaching</p><p>When:</p><p>- Mostly pre-season</p><p>REST</p><p>What:</p><p>- Low carbohydrate intake</p><p>- Moderate protein intake</p><p>Why:</p><p>- Recovery</p><p>- Focus on healthy nutrition</p><p>When:</p><p>- Rest days</p><p>DIAGRAM ON SLIDE 9</p>
7
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<p>Which nutrition-related factors can contribute to fatigue in team sports?</p>

Which nutrition-related factors can contribute to fatigue in team sports?

- Dehydration

- Muscle glycogen depletion

- Hypoglycaemia and depletion of central nervous system fuels, including brain glycogen

- Disturbance of muscle acid-base balance

- Depletion of phosphocreatine stores

- Gastrointestinal disturbances

- Salt depletion (uncertain/questioned on slide)

- Water intoxication / hyponatraemia, meaning low blood sodium


<p>- Dehydration</p><p>- Muscle glycogen depletion</p><p>- Hypoglycaemia and depletion of central nervous system fuels, including brain glycogen</p><p>- Disturbance of muscle acid-base balance</p><p>- Depletion of phosphocreatine stores</p><p>- Gastrointestinal disturbances</p><p>- Salt depletion (uncertain/questioned on slide)</p><p>- Water intoxication / hyponatraemia, meaning low blood sodium</p><p></p>
8
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What are ASNAP and PEAKS-NQ used for in athlete nutrition?

ASNAP:

- Accelerated Sports Nutrition Assessment Program

- Identifies gaps in nutrition knowledge and current dietary intake

- Can help tailor education in group and individual settings

- Intended for practical day-to-day sports nutrition use

PEAKS-NQ:

- Platform for Evaluating Athlete Knowledge in Sports Nutrition Questionnaire

Purpose:

Both can help identify gaps in athlete nutrition knowledge so education can be targeted.

9
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What AIS Performance Nutrition HQ education topics were shown?

Australian Institute of Sport Performance Nutrition HQ modules included:

- Nutrition

- Introduction

- Nutrition fundamentals

- Supplements

- Training and Competition Nutrition

- Optimising hydration

DIAGRAM ON SLIDES 14-15

10
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What are the main principles for fuelling team-sport athletes for optimal performance?

- Meet daily carbohydrate requirements.

- Increase carbohydrate intake in the 24-48 h before a match when appropriate.

- Use IOC guidelines as a framework.

- Individualise intake to the athlete.

- Treat timing as important as total intake.

Lecturer explanation:

Food choices, tolerance, role and timing should be personalised rather than applying one rigid plan to the entire team.

11
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What did team-sport research show about carbohydrate availability and performance?

General:

- Few studies directly examine fuel demands in team-sport training or competition.

- Much of the research is in football/soccer.

Findings:

- Match glycogen depletion is associated with reduced distance run and reduced speed in the second half.

- 8 g CHO·kg⁻¹ BM for 48 h versus 4.5 g·kg⁻¹ BM increased intermittent running to fatigue at the end by about 1 km.

- 8 g·kg⁻¹ BM versus 3 g·kg⁻¹ BM in the preceding 48 h increased muscle glycogen by 38% and enabled 33% more high-intensity work.

- In ice hockey, 8.4 versus 6.2 g·kg⁻¹ BM during a 72 h recovery period produced 45% better muscle-glycogen restoration and increased distance and speed.

- Exercise with low glycogen may enhance selected training adaptations: 'train low / compete high'.

12
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What are the main goals of pre-event fuelling in team sports?

- Optimise muscle glycogen stores

- Restore liver glycogen, especially before early-morning games

- Prevent hunger

- Avoid gastrointestinal issues

- Encourage routine and structure

- Consider psychology and superstitions

Lecturer explanation:

Familiar routines are useful, but dependence on a specific 'lucky' food may become a problem during travel or when that food is unavailable.

13
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What is the practical pre-event carbohydrate timing strategy shown in the lecture?

3-4 HOURS BEFORE — MEAL

- Timing is highly individual

- Aim for about 1-4 g CHO/kg BM

- More important for longer, high-intensity events

- Fibre, fat and protein content can affect GI comfort

1-2 HOURS BEFORE — SNACK

- About 1 g CHO/kg BM

WITHIN THE LAST HOUR

- Gels

- Bars

- Sports drinks

Also:

- Consider anxiety/nerves

- Include fluid, which may provide carbohydrate, electrolytes and water

Lecturer explanation:

Nerves can affect gastric emptying, making simpler or more liquid foods useful for some athletes.

DIAGRAM ON SLIDE 21

14
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Which carbohydrate-rich foods and drinks were suggested for pre-event fuelling?

CHO-rich foods:

- Pasta

- Noodles

- Rice

- Other grains such as barley, quinoa, rye and oats

- Breakfast cereal

- Bread, including muffins and crumpets

- Pancakes

- Yoghurt

- Fruit: fresh, tinned or dried

- Starchy vegetables:

- Potato

- Sweet potato

- Corn

- Baked beans and other legumes

- Tinned spaghetti

- Muesli / breakfast bars

Drinks:

- Milk, including flavoured milk

- Smoothies

- Liquid meal replacements

- Fruit juice

- Sports drinks

15
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What special pre-event hydration strategies and risks were discussed?

Hyperhydration:

- Has shown positive results in some clinical trials

Potential disadvantages:

- Frequent urination

- Gut discomfort

- Hyponatraemia

- Increased body mass

Glycerol:

- Was on the WADA prohibited list

- Removed in 2018

Salt loading:

- Sodium-containing beverages can increase plasma volume

Stomach priming:

- Fluid bolus of about 5 mL·kg⁻¹ BM immediately before the event

- Approximately 300-400 mL

16
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What pre-event cooling strategies were illustrated for hot conditions?

Heat-management strategies shown included:

- Cooling garments / cooling jackets

- Ice slurries

- Menthol-type cooling products

Lecturer explanation:

Menthol may create a perception of cooling without necessarily reducing body temperature, so strategies should be trialled before competition.


17
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What are the main reasons to consume carbohydrate during team-sport exercise?

Carbohydrate during exercise may:

- Prevent hypoglycaemia

- Ensure adequate carbohydrate supply to working muscle

- Benefit central performance involving the brain and nervous system

- Provide possible immune-system benefits

Carbohydrate mouth rinsing can also produce central performance effects.

18
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How may carbohydrate mouth rinsing improve short, high-intensity performance?

Key points from mouth-rinse studies:

- Performance benefits in short, high-intensity efforts can occur through a neural response rather than actual carbohydrate ingestion.

- A positive afferent signal may modify motor output.

- The effect is not only metabolic.

- Oral/taste-related cues are linked with emotional, cognitive and behavioural responses.

- Receptor cells may detect carbohydrate rather than simply taste.

- The exact mechanism remains unclear.

Lecturer explanation:

The athlete may rinse and spit out the carbohydrate solution yet still receive a central performance benefit.


19
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What carbohydrate sources are practical during team-sport exercise?

Examples:

- Sports drinks

- Gels

- Lollies / confectionery

- Bananas

- Other familiar sports foods

Practical principles:

- For typical team-sport durations, the exact carbohydrate type is less important.

- Balance carbohydrate intake with fluid needs.

- Practise the nutrition strategy in training to reduce gastrointestinal problems.


20
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What are the main goals of post-exercise nutrition after team-sport competition?

- Restore muscle glycogen stores

- Restore liver glycogen stores

- Replace fluid and electrolytes lost in sweat

- Support regeneration, repair and adaptation after catabolic stress

- Consider sleep quality after late games

Lecturer explanation:

Late-night competition can create tension between immediate recovery feeding and protecting sleep, which is itself an important recovery tool.

21
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What practical factors can reduce food and fluid intake after a game?

- Reduced ability or interest in eating/drinking

- Fatigue

- Loss of appetite

- GI symptoms

- Emotional response to the result

- Limited access to suitable food at the venue

- Post-game commitments:

- Coach meetings

- Media interviews

- Cool-down activities

- Sport Integrity Australia testing

22
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What are the practical post-exercise nutrition recommendations after >60 min of intermittent high-intensity exercise?

As soon as possible after exercise:

- 1.0-1.2 g CHO·kg⁻¹ BM

- 20-25 g protein

- Replace about 150% of fluid losses

Then:

- Follow with a meal about 2-3 h post-game

23
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What rapid-recovery strategy is recommended when there are <8 h between long sessions or matches?

- Consume 1.0-1.2 g CHO·kg⁻¹ BM immediately.

- Then consume smaller high-GI carbohydrate servings every 15-20 min for the first 4 h.

- Replace about 150% of estimated fluid losses over the next 4-6 h.

- Use an electrolyte-containing beverage.

24
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How do pre-game carbohydrate targets scale with athlete body mass?

At 1 g CHO·kg⁻¹ BM:

- 80 kg athlete → 80 g CHO

- 90 kg athlete → 90 g CHO

- 100 kg athlete → 100 g CHO

At 2 g CHO·kg⁻¹ BM:

- 80 kg athlete → 160 g CHO

- 90 kg athlete → 180 g CHO

- 100 kg athlete → 200 g CHO

Food examples shown:

- Footlong 6% Sub: ~100 g carbohydrate

- 6 Weet-Bix + milk + banana + honey: ~100 g carbohydrate

The slide separates foods into:

- Essential: performance benefit

- Optional: no performance benefit

DIAGRAM ON SLIDE 40

25
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What pre-game eating schedule was shown for an 11:00 match?

07:00 pre-game:

- 6 Weet-Bix + milk + banana + honey

- ~100 g carbohydrate

10:00 top-up:

- Banana and/or muesli bar

- ~20-50 g carbohydrate

Lecturer explanation:

Because the game starts early, carbohydrate intake on the previous day also matters.

DIAGRAM ON SLIDE 41

26
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What pre-game eating schedule was shown for a 14:15 match?

07:00 breakfast:

- 6 Weet-Bix + milk + banana + honey

- ~100 g carbohydrate

10:00 pre-game:

- Footlong 6% Sub

- ~100 g carbohydrate

12:00 top-up:

- Banana and/or muesli bar

- ~20-50 g carbohydrate

DIAGRAM ON SLIDE 42

27
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What pre-game eating schedule was shown for a 19:15 match?

07:00 breakfast:

- 6 Weet-Bix + milk + banana + honey

- 100 g carbohydrate

10:00 morning tea:

- 1 slice toast + baked beans

- 65 g carbohydrate

12:00 snack/lunch:

- 2 cups pasta

- 100 g carbohydrate

15:00 pre-game:

- Footlong 6% Sub

- 100 g carbohydrate

17:00 top-up:

- Banana and/or muesli bar

- 20-50 g carbohydrate

DIAGRAM ON SLIDE 43

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What carbohydrate options were illustrated for warm-up and match breaks?

Warm-up options shown:

- Pikelets

- Sports drinks

- Ice slushies

- Bananas

- Energy gels

- Lollies / confectionery

- Other sports nutrition products

Match-break examples:

¼ time:

- Lollies

½ time:

- Sports drinks

- Energy gel

- Pikelets

- Bananas

- Lollies

- Ice slushies

- Other sports foods

¾ time:

- Sports drinks

- Energy gel

- Lollies

- Ice slushies

- Sports nutrition products

Lecturer explanation:

Changing flavours and foods may reduce flavour fatigue and help maintain intake.

DIAGRAM ON SLIDES 44-45

29
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What dehydration levels and performance effects were shown?

Water loss as % body mass:

2%:

- Impaired thermoregulatory ability

- Reduced muscular endurance

4%:

- Reduced muscular strength

- Reduced endurance time

- Heat cramps

6%:

- Severe heat cramps

- Heat exhaustion

8%:

- Heatstroke

- Coma

- Death

Lecturer explanation:

Performance effects may emerge around 2% body-mass loss, although individual sensitivity varies.

DIAGRAM ON SLIDE 49

30
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How did dehydration affect cricket-specific skill execution in the study shown?

FIELDERS:

- 7% decrease in throwing speed

- 14-22% decrease in throwing accuracy

FAST BOWLERS:

- Up to 37% decrease in line-and-length accuracy

BATTERS:

- 2% slower over a single run

- 4% slower to complete 3 runs

DIAGRAM ON SLIDE 51

31
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What are the core principles of hydration planning for team-sport athletes?

- Start each game or match in a well-hydrated state.

- Hot and humid environments make hydration more challenging.

- Multiple sessions can cause fluid deficits to accumulate.

- Fluid intake during exercise usually does not fully match sweat loss.

Lecturer emphasis:

Starting well hydrated is important because complete replacement during play is often impossible.

32
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Which factors affect an athlete's fluid losses during exercise?

- Genetics

- Body surface area

- Environment

- Exercise intensity

- Aerobic fitness

Lecturer explanation:

Sweat rates can vary greatly between athletes and conditions; fitter athletes may sometimes sweat more because of a better-developed cooling response.

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How should sweat rate be measured in practice?

- Weigh the athlete before and after training or competition.

- Use minimal, comparable clothing.

- Towel off residual sweat before weighing.

- Record fluid consumed.

- Record session duration.

Purpose:

Estimate exercise-associated fluid loss and sweat rate.

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How was sweat rate calculated in the 70.5 kg soccer-player example?

Session:

- 1 h training

Pre-training mass:

- 70.5 kg

Post-training mass:

- 69.2 kg

Fluid consumed:

- 300 mL water

Fluid deficit:

- 1.3 kg ≈ 1300 mL

% body-mass loss:

- (70.5 − 69.2) / 70.5 × 100

- = 1.84%

Sweat rate:

- 1300 mL + 300 mL

- = 1600 mL·h⁻¹

DIAGRAM ON SLIDE 55

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Netball player:

- 70.0 kg pre-training

- 68.6 kg post-training

- Drank 500 mL sports drink

- 90 min training

1. What is her percentage dehydration?

2. What is her sweat rate?

Correct answer not stated in the provided lecture material.

Lecturer explanation:

The exercise was included to practise calculating percentage body-mass loss and sweat rate, including conversion of 90 min to 1.5 h for an hourly rate.

DIAGRAM ON SLIDE 56

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What sweat-rate values were shown for Australian rules football?

Male athletes:

Example 1:

- Sweat rate: 1.4 L·h⁻¹

- Ambient temperature: 12-15°C

- Relative humidity: 55-88%

Example 2:

- Sweat rate: 1.8 L·h⁻¹

- Ambient temperature: 27°C

- Relative humidity: 52%

Lecturer explanation:

Published values illustrate that sweat rate varies substantially with conditions and individuals.

DIAGRAM ON SLIDE 57

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What sweat-rate values were shown for basketball?

Competition:

- Male: 1.6 L·h⁻¹ at 23°C, 41% RH

- Male: 1.6 L·h⁻¹ at 19°C, 36% RH

- Female: 0.9 L·h⁻¹ at 26°C, 60% RH

- Female: 1.0 L·h⁻¹ at 17°C, 58% RH

Training:

- Male: 1.4 L·h⁻¹ at 27°C, 34% RH

- Male: 1.0 L·h⁻¹ at 20°C, 24% RH

- Female: 0.7 L·h⁻¹ at 25°C, 43% RH

DIAGRAM ON SLIDE 58

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What sweat-rate values were shown for cricket?

Male athletes:

- 0.5 L·h⁻¹ at 23°C and 65% RH

- 0.7 L·h⁻¹ at 33°C and 22% RH

- 1.4 L·h⁻¹ at 33°C and 30% RH

DIAGRAM ON SLIDE 59

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What sweat-rate values were shown for football/soccer?

Competition:

- Female: 0.8 L·h⁻¹ at 26°C, 78% RH

- Male: 1.2 L·h⁻¹ at 25°C, 41% RH

- Male: 1.0 L·h⁻¹ at 10°C, 56% RH

Training:

- Female: 0.8 L·h⁻¹ at 30°C, 35% RH

- Male: 1.0 L·h⁻¹ at 25°C, 41% RH

- Male: 0.7 L·h⁻¹ at 9°C, 61% RH

Other male examples:

- 2.1 L·h⁻¹ at 33°C, 40% RH

- 0.8 L·h⁻¹ at 13°C, 7% RH

- 2.0 L·h⁻¹ at 13°C, 7% RH

- 1.3 L·h⁻¹ at 19°C, 55% RH

DIAGRAM ON SLIDE 60

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What sweat-rate values were shown for netball?

Female athletes:

- Competition: 1.0 L·h⁻¹ at 22°C, 66% RH

- Unspecified intensity: 0.9 L·h⁻¹ at 16°C, 43% RH

- Training: 0.7 L·h⁻¹ at 28°C, 36% RH

- Training: 0.7 L·h⁻¹ at 19°C, 30% RH

DIAGRAM ON SLIDE 61

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What sweat-rate values were shown for rugby union?

Male athletes:

- 2.2 L·h⁻¹ at 18-20°C and 18-20% RH

- 1.7 L·h⁻¹ at 21-23°C and 78-85% RH

- 2.2 L·h⁻¹ at 20-22°C and 74-82% RH

Position-specific examples at 24-25°C and 30-32% RH:

- Forwards: 2.6 L·h⁻¹

- Backs: 1.6 L·h⁻¹

Lecturer explanation:

Position can materially affect fluid loss, so team-wide hydration prescriptions may not suit every player.

DIAGRAM ON SLIDE 62

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How was the Heat Stress Index interpreted on the example slide?

Example meteorological inputs:

- Air temperature: 34.5°C

- Relative humidity: 55%

- Wind: 17.0 km·h⁻¹

- Sunny-condition input also considered

Calculated risk:

- 7.4

Risk bands:

- 0-4: Play proceeds as normal

- 5-7: Extra breaks recommended

- 8-10: Extended extra breaks recommended

- >10: Consider suspension of play

Lecturer explanation:

Heat indices can guide decisions about additional breaks, delaying play or suspending activity.

DIAGRAM ON SLIDE 63

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Why may team-sport athletes fail to drink enough during exercise?

- No fluid available at the venue

- Not thirsty

- Poor understanding of performance consequences

- Feeling uncomfortable when drinking during exercise

- Difficulty getting access to fluid during the event

- Concern about time lost

- Other athletes are not drinking

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What practical strategies can encourage athletes to drink during training?

- Experiment with fluid type, amount and timing.

- Keep the stomach partly full.

- Drink about every 15-20 min.

- Typical amount per opportunity: 150-250 mL.

- About one 750 mL bottle per hour can be used as an initial guide.

- Keep a bottle available at all times.

- Cool fluids may be more refreshing and palatable.

Lecturer explanation:

These are starting points rather than fixed prescriptions; individual sweat rate remains important.

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How does dehydration affect the gastrointestinal tract, and what adaptations occur with heat acclimatisation?

Dehydration:

- Can reduce gastric emptying rate

- Can increase gastrointestinal discomfort

Heat acclimatisation adaptations:

- Plasma volume expands

- Blood flow to muscle and skin improves

- Sweat glands hypertrophy

- Sweating begins at a lower core temperature

- Sweat becomes more dilute

- Sweat distribution improves

Also:

- Monitor body mass to minimise very large losses or gains.

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How should hydration be organised during games?

- Allocate substitutes or other players to refill bottles.

- Bench players should continue drinking.

- Use timeouts and other breaks as drinking opportunities.

- Follow a planned drinking strategy.

47
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What recovery-hydration practices were recommended after team-sport exercise?

- Full rehydration may take 24-48 h.

- Carry a drink bottle to work or school.

- Monitor urine colour.

- Monitor body mass.

- Use pre- and post-exercise body mass to estimate replacement needs.

- Slide guide: 1 kg body-mass loss ≈ 1.5 L fluid replacement.

- Avoid sitting in hot environments after exercise.

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What practical pre-event hydration guidelines were recommended?

- Know the athlete's sweat rate.

- Monitor hydration status using:

- Urine colour

- Urine specific gravity (USG)

- Start each session well hydrated.

- Consider a pre-start fluid bolus:

- 5 mL·kg⁻¹ BM immediately before the event

- Approximately 300-400 mL

- Consume 300-600 mL with a pre-event meal.

- Consider 300-400 mL sports drink in the final 15-20 min before the event.

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Which tools or methods were shown for assessing hydration status?

Methods illustrated included:

- Refractometer for urine specific gravity

- Hydration-monitoring app / mobile tracking

- Skin patch for sweat-electrolyte assessment

- Body-mass scales

Lecturer explanation:

Different tools assess different aspects of hydration and sweat loss.

DIAGRAM ON SLIDE 70

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What simple self-monitoring signs can an athlete use to judge hydration status?

Self-monitoring signs:

- Urine colour

- Urine volume / frequency

- Physical symptoms

- Thirst

- Body-mass changes

The slide emphasised three overlapping practical checks:

- Thirst

- Urine colour and frequency

- Body mass

Lecturer explanation:

Using several signs together is more informative than relying on only one.

DIAGRAM ON SLIDE 71

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How should the urine-colour chart shown in the lecture be interpreted?

Colours 1-3:

- Properly hydrated

- Continue recommended fluid intake

Colours 4-8:

- Increasingly suggest dehydration

- Athlete should drink more water

- Darker urine was associated on the chart with greater risk of cramping and/or heat illness

Important:

This is a screening aid rather than a stand-alone diagnostic tool.

DIAGRAM ON SLIDE 72

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What is urine specific gravity (USG), and what threshold was used in the lecture?

USG:

- Urine specific gravity

- Used as an indicator of how successful the previous day's rehydration strategies have been

Threshold:

- <1.020 → HYDRATED

- >1.020 → DEHYDRATED

Interpretation:

- Below 1.020: fluid balance restored

- Above 1.020: fluid deficit carried over and rehydration is needed

Lecturer explanation:

First-morning USG can reflect the previous day's hydration status.

DIAGRAM ON SLIDE 73

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What relationship between urine appearance and USG was illustrated?

USG examples shown:

- 1.027

- 1.020

- 1.015

- 1.010

General visual relationship:

- Higher USG samples were darker / more concentrated.

- Lower USG samples were paler / more dilute.

DIAGRAM ON SLIDE 74

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What final hydration tips were given to team-sport athletes?

- Drink early in the session.

- Drink at every opportunity.

- Aim to keep fluid losses to about 1-2% of body mass.

- Replace sweat losses with about 150% of the fluid lost.

- Drink adequately throughout the day.

- Carry water bottles.

- Drink on waking.

- Drink with meals.

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What hydration and snack strategies were recommended for flights and team travel?

Hydration:

- Stay hydrated

- Monitor urine on waking

- Carry a water bottle

Portable snacks:

- Trail bar

- Dried fruit and nuts

- Liquid meal replacements

- Fruit

- Cheese and crackers

Planning:

- Familiarise athletes with healthier options at airports and hotels

Lecturer explanation:

Do not rely only on airline or venue food; carry familiar food and fluid where practical.

DIAGRAM ON SLIDE 78

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What 'food on the go' options were suggested for travelling team-sport athletes?

Examples:

- Poke bowls

- Burrito-style bowls

- Burritos

- Chicken with rice:

- Steamed rice

- Paella

- Fried rice

- Spicy rice

- Corn cob or salad

- Sushi

- Rice-paper rolls

- Burgers:

- Make-your-own

- Lean meat and salad

- Stir-fries with rice:

- Chicken with chilli and basil

- Sweet chilli

- Teriyaki chicken

- Beef with oyster sauce

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What additional travel meal options were suggested on the second 'food on the go' slide?

Tex-Mex:

- Burrito with rice, beans, salad and meat

- Bowl with rice and/or beans, salad and chicken

Salads / lighter meals:

- Thai beef

- Vietnamese chicken

- Spicy prawn

- Chickpeas with roast pumpkin

- Pumpkin and couscous

- Rice-paper rolls

- Soups

- Beetroot and balsamic salad

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What buffet-breakfast strategy was recommended for travelling athletes?

Principles:

- Aim for 3 food groups.

- Decide what you are going to have before filling the plate.

- Stick to one plate of food.

Examples:

- Muesli + yoghurt + fruit

- Toast + baked beans + tomato

- Fruit toast + yoghurt + banana

- Toast + peanut butter + banana + honey

- Smoothie with oats + milk + fruit

Lecturer explanation:

Select an amount and combination appropriate to the athlete's normal intake and upcoming training demands rather than sampling every buffet option.

DIAGRAM ON SLIDES 81-82