Your client has signed up for a half-marathon later in the year as part of their 'health-kick'. The fluid balance data and proposed fluid plan is included below.

Sweat testing results

Test duration: 90 minutes

Weight before test: 93kg

Weight after test: 91.2kg

Fluid intake during test: 650mL

Half-marathon fluid replacement plan

Jeremy plans to consume 250ml of sports drink per 20 minutes during his half-marathon.

Evaluate whether the client's current fluid replacement plan for a half-marathon is appropriate, assuming a race duration of 2.5 hours and similar conditions as during testing. Discuss your reasoning and provide any necessary calculations (with working) to support your recommendation. If the plan is not sufficient, suggest an alternative fluid strategy with justification.

equations used-

1.Sweat loss when exercising = body weight before test (ml) -after test (ml) + fluid intake (ml)

2.Sweat rate per hour = (total sweat loss (ml) / exercise duration (mins)) x 60

3. Dehydration% = (weight change (kg) / weight before exercise (kg)) x 100