muscular strength is assessed by measuring |
amount of force a muscle can produce with a single masimum effort |
muscular endurance is assessed by measuring |
the maximum number of reps or maximum amount of time you can hold a muscular contraction |
a motor unit is made up of |
a nerve connected to a number of muscle fibers |
a muscle fiber is |
an individual muscle cell connected in bundles |
hypertrophy |
development of large muscle fibers |
slow twitch muscles are characterized by |
reddish in color, fatigue resistant, slow contraction speed, lower capacity for tension, usually for endurance activities |
fast twitch muscle fibers are characterized by |
white in color, contract rapidly and forcefully, fatigue quickly, usually for actions that require strength and power |
activities that would predominantly use slow-twitch muscle fibers are |
endurance activities (EX-jogging, swimming…) |
activities that would predominantly use fast-twitch muscle fibers are |
strength and power activities (EX-sprinting) |
injuries such as low back pain are reduced if the spine is properly aligned by strong muscles in the |
abdomen, hips, lower back, and legs |
what percentage of all Americans will be afflicted with low back pain at some point in their life |
85% |
strength training improves body composition primarily by |
increasing muscle mass |
metabolic rate increases if |
muscle mass increases |
testosterone |
an essential hormone that men have in higher amounts than women and that allows men to build more muscle mass than women |
results of inactivity and aging |
loss of muscle mass, slower muscles, decreased strength, trouble performing simple everyday movements |
people typically begin to lose muscle mass after age |
30 |
cause of the decrease in muscle strength often associated with aging |
inactivity, lack of a strength training program, and sarcopenia |
strength training helps in the prevention and management of chronic disease by |
lessening bone loss, improving glucose metabolism, increasing maximal oxygen consumption, reducing blood pressure |
isometric exercise is best described as applying force |
without a change in length of muscle |
advantages of isometric or static exercises |
strengthens muscles after injury or surgery, overcome weak pints in individual’s range of motion, allows more weight to be lifted with that muscle during dynamic exercise |
concentric muscle contraction |
muscle force exerted as a muscle shortens |
eccentric muscle contraction |
a muscle lengthens as it contracts |
eccentric (pilometric) loading |
a good resistance training technique for developing explosive strength |
speed loading |
type of isotonic exercise used by athletes during training to simulate movement during sprinting or throwing |
plyometrics |
an exercise in which the individual jumps from a platform to the ground and then back up on the platform |
isokinetic exercise is best described as applying force |
at a constant speed against an equal force |
compared to free weights, weight machines are considered |
safe, convenient, and easy to use |
compared to weight machines, free weights are |
widely available, inexpensive, and convenient for home use |
pilates |
type of body weight exercise that emphasizes control of movement |
stability ball exercise is particularly effective for improving |
core, endurance, and strength |
the MINIMUM number of training days per week for gaining strength is |
2 nonconsecutive days (3 is better) |
training intensity for weight training is determined by |
how much weight you use |
recommended amount of resistance and number of repetitions for improving muscular endurance is |
40-60% of RM; 15-20 reps (RM=repetition maximum) |
recommended amount of resistance and number of repetitions for building muscular strength rapidly is |
80% of RM; 1-5 reps (RM=repetition maximum) |
to build individual muscle strength and muscle size, it is best to |
use heavy weight and do less reps |
to improve muscular endurance, it is best to |
use light weight and do more reps |
in weight training, a set is a |
group of reps followed by a rest period |
to gain muscular strength and endurance for general fitness, the rest interval between sets should last |
1-3 minutes |
for overall fitness, how many different exercises should you include in your weight training program |
8-10 |
antagonist muscle |
opposes the action of a contracting muscle, its agonist |
a cool-down period after a weight training workout should include |
relaxing for 5-10 minutes and some stretching |
when you are ready to increase resistance for an exercise in a weight training program, approximately how much weight should you add if you are currently lifting 100 lbs.? |
5 lbs. (5%) |
recommended strategies for strength training safety |
use proper lifting technique, use spotters and collars with free weights, be alert for injuries |
TF: Recent research on men indicates greater muscular strength is associated with lower rates of death from all causes, including cancer and cardiovascular disease. |
true |
TF: Increased muscular strength and endurance reduces one’s risk of injury. |
true |
TF: Weight training improves body composition by increasing fat free mass and raising metabolism. |
true |
TF: Strength training can lessen bone loss in postmenopausal women. |
true |
TF: Strength training can improve glucose metabolism. |
true |
TF: For a strength training program to develop general fitness, it is sufficient to do just one set of each exercise. |
true |
TF: For strength gains, a balanced diet is more important than taking supplements. |
true |
HED M03 Test 4
Share This
Unfinished tasks keep piling up?
Let us complete them for you. Quickly and professionally.
Check Price