OBLA

Question 1

What is OBLA

Answer 1

Onset of blood lactate accumulation - It describes the point at which lactate rapidly accumulates in the muscles and blood.
It gives a performer an indication of their endurance capacity.

Question 2

When is lactate produced?

Answer 2

When hydrogen is removed from the lactic acid molecule

Question 3

How much lactic acid is in the blood at rest?

Answer 3

1-2mmoll

Question 4

When do lactic acid levels rise dramatically?

Answer 4

During anaerobic intense exercise

Question 5

When does OBLA occur?

Answer 5

At 4mmoll

Question 6

What is OBLA also known as?

Answer 6

Lactate threshold or anaerobic threshold

Question 7

What is OBLA expressed as?

Answer 7

A percentage of VO2 max, as it is OBLA that determines what percentage of our engine (VO2 max) we can use.

Question 8

When does OBLA occur for an untrained individual?

Answer 8

At around 55-60% of their VO2max

Question 9

When does OBLA occur for a trained individual?

Answer 9

At around 85-90% of their VO2 max as they’re able to delay OBLA

Question 10

Why can trained individuals train for longer without reaching OBLA?

Answer 10

As they have a higher lactate tolerance and a better buffering capability.

Question 11

How can OBLA be delayed?

Answer 11

By training around your lactate threshold it will be improved

Question 12

What adaptations does further training lead to?

Answer 12

• higher tolerance to blood lactate
• increased removal of lactic acid through effective buffering

Question 13

What does buffering mean?

Answer 13

The ability of the blood to compensate for the addition of lactic acid or hydrogen ions and maintain the pH level.