Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
589 views
in Psychology by (71.1k points)

During maximal exercise, a 75 kg athlete aged 25 would have a 

A. Heart rate nearer 200 than 150 beats/minute. 

B. Stroke volume nearer 70 ml than 140 ml. 

C. Tidal volume nearer 2 litres than 1 litre. 

D. Blood lactate nearer 50 than 10 times the resting level. 

E. Mixed venous blood oxygen content nearer 100 than 150 ml/litre.

1 Answer

+1 vote
by (65.7k points)
selected by
 
Best answer

A. True The predicted rate (220 minus age in years) is 195. 

B. False A heart rate of 195 and stroke volume of 70 would give a cardiac output of 13.65 litres/minute; maximal output in an athlete is about twice that value. 

C. True A tidal volume of 2 litres and respiratory rate of 60/minute gives a total ventilation of 120 litres/minute. 

D. False It should be five to ten times the resting level. 

E. True It would be below 100 ml/litre (less than 50 per cent saturated); most of the circulation passes through exercising muscles and gives up considerably more than half its oxygen to the muscles.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...