Development and Ageing

Question 1

What is the acute strength response to exercise in children? why?

Answer 1

limited strength development due to lack of sex hormones and due to the development of the neural system.

Question 2

What is the acute cardiovascular response to exercise in children? why?

Answer 2

• decreased cardiac output due to greater % of Q going to muscles
• increased HR to compensate for lower SV
• heart max higher
• increased a-VO2 difference due to blood going to muscles

Question 3

What is the acute respiratory response to exercise in children?

Answer 3

• decreased capacity and volumes due to smaller body size

Question 4

What is the acute endocrine response to exercise in children?

Answer 4

• GH, IGF, testosterone/oestrogen and catecholamines increase
• greater use of exogenous glucose due to lower muscle glycogen stores

Question 5

What is the acute anaerobic response to exercise in children? Why?

Answer 5

Limited

• lower glycolytic capacity due to lower PFK and LDH concentrations and decreased intramuscular glycogen
• lower lactate production