ms tanya hamilton professor dave gerrard north/sun_room10_0832_hamilton... · 2018-06-09 · ms...

Ms Tanya HamiltonSenior Performance Nutritionist

High Performance Sport New Zealand

(HPSNZ)

Auckland

8:30 - 9:25 WS #192: Sports Nutrition 101 for GPs - a panel

9:35 - 10:30 WS #204: Sports Nutrition 101 for GPs - A panel (Repeated)

Ms Jeni PearceHead of Performance Nutrition


Auckland

Professor Dave

GerrardDunedin School of Medicine


(HPSNZ)

Auckland

NUTRITION FOR DEVELOPING

ATHLETESTanya Hamilton

HPSNZ Performance Nutritionist

Copyright Tanya Hamilton 2018.

Setting the scene

12-18 year old athletes:

Competitive verses active

Physical (puberty, growth spurts)

Cognitive

Social

Studying

+ sport (type, intensity and volume)

E.g.14-15 yr old Swimmer

Active: 2- 4hr/week +/- other sports

Competitive: 14.5hr/week +/- other sports


Big rocks

■ Energy availability

■ At risk nutrients

■ Supplements


Energy Availability (EA)

■ EA = Energy Intake – Exercise Energy Expenditure

■ Energy requirements high E.g. 14 yo swimmer 4hr/day training ~14,000 KJ/day

■ Difficult to estimate energy requirements

■ When is it an issue?


Is energy adequate?✓ Growing

✓ Healthy

Recurrent illness

Unexplained injury/fractures

Poor response to training

Failing growth milestones/weight loss

Ongoing fatigue

Following certain diets

Eating disorder/disordered eating

GI issues

Chronic low mood / motivation

Lack of/disturbed sleep

Nutrient deficiencies

Chronic poor appetite

Not performing as expected

Irregular/absent menses/abnormal hormone profile

Poor concentration/suffering school work

Suffering relationships


At risk nutrients


Calcium:

Higher than adult

(1300mg/day)

Energy production/performance

Haemoglobin synthesis

Bone health

Immunity

Protection against oxidative

damage

Synthesis and repair of muscle

tissue

Vitamin D:

(5ug or 400IU/day, AI

5mg/day)

Bone density

Muscle strength & function

Immunity

Physical performance

At risk nutrients


Iron:

11 15mg/day

Energy metabolism

Immunity

Technical skills performance

Physical performance

Food focused

Food group guided

■ Correct inadequacies

■ Aim for daily consistency

Patterns

■ 2-3 hourly meals and snacks

■ Constant state of preparation and

recovery


Supplements? simply…no


Undermines everything else

Safety & effects = unknown

Athletes are unique

Individualise, customise and periodise

Prescribed supplements

(NZ Formulary listed as medicine or AUST R number)

Contamination


Manufacturing IS important

Purity

Efficacy

DIETARY SUPPLEMENTS

Efficacy

Purity

MEDICINES

Chapters

17 & 5


Thank you

Questions

Key references

14,400kj day


ms tanya hamilton professor dave gerrard north/sun_room10_0832_hamilton... · 2018-06-09 · ms...

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