214k views
3 votes
If Jill can lift 20 boxes onto a shelf at work, one at a time repeatedly, she is demonstrating _____.

1.) muscle strength
2.) an isometric exercise
3.) the Valsalva maneuver
4.) muscle endurance

User Konqi
by
5.7k points

2 Answers

2 votes

Answer:

muscle endurance

Step-by-step explanation:

User Jurik
by
5.7k points
3 votes
Muscle Endurance would be your answer. 
User Sam Ho
by
6.1k points