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Chapter 4

暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。

卡片总数: 24 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

卡片预览 (24 张)

#1
正面 (问题)

Muscular strength =

背面 (解答)

the amount of force a muscle can produce with a single maximum effort

#2
正面 (问题)

Muscular endurance =

背面 (解答)

the ability of a muscle or group of muscles to remain contracted (sustain a level of muscular force) or to contract repeatedly

#3
正面 (问题)

Muscles consist of many ______ connected in bundles

背面 (解答)

muscle fibers (cells)

#4
正面 (问题)

Muscle fibers/cells are made up of?

背面 (解答)

myofibrils

#5
正面 (问题)

Myofibrils contain ____ and ____ filaments which slide together and contract the fiber

背面 (解答)

actin and myosin

#6
正面 (问题)

Strength training increases the?

背面 (解答)

of myofibrils and the size of muscle fibers

#7
正面 (问题)

hypertrophy

背面 (解答)

size of muscle fibers

#8
正面 (问题)

atrophy

背面 (解答)

Inactivity reverses the process (No appreciable increase in # of muscle fibres)

#9
正面 (问题)

characteristics of Slow-twitch fibers (red)?

背面 (解答)

 Fatigue resistant  Don’t contract as rapidly or forcefully as fast-twitch fibers  Rely primarily on oxidative energy system

#10
正面 (问题)

characteristics of Fast-twitch fibers (white)?

背面 (解答)

 Fatigue more quickly than slow-twitch fibers  Contract rapidly and forcefully  Rely more on non-oxidative energy system

#11
正面 (问题)

Intermediate fibers

背面 (解答)

fuel system between slow + fast-twitch

#12
正面 (问题)

The type of fibre activated depends on?

背面 (解答)

the nature of the physical demand

#13
正面 (问题)

Endurance activities (walking, jogging) use more _____ fibres, while strength/power activities use more ____ fibres

背面 (解答)

slow-twitch, fast-twitch

#14
正面 (问题)

A “motor unit”?

背面 (解答)

1 nerve connected to 2 or many muscle fibers

#15
正面 (问题)

what are some Physiological Effects of Strength Training?

背面 (解答)

 Increased muscle mass and size of muscle fibers  Increased utilization and coordination of motor units  Increased strength of tendons, ligaments, and bones  Increased storage of fuel in and blood supply to muscles  Increased size of fast-twitch fibres  Increased size of slow-twitch fibres  Improvements in blood fat levels  Improved blood vessel health  Improvements in biochemical processes

#16
正面 (问题)

Benefits of Muscular Strength and Endurance?

背面 (解答)

 Improved performance of physical activities  Injury prevention (maintaining posture, mechanics)  Improved body composition  Enhanced self-image and quality of life  Improved muscle and bone health with aging  Prevention and management of chronic disease

#17
正面 (问题)

Muscular strength assessed by determining?

背面 (解答)

the maximum resistance that can be lifted one time

#18
正面 (问题)

Muscular endurance assessed by?

背面 (解答)

counting the maximum number of repetitions (or length) of a muscular contraction

#19
正面 (问题)

Static (isometric) exercise =

背面 (解答)

muscle contraction without a change in the length of the muscle

#20
正面 (问题)

Dynamic (isotonic) exercise =

背面 (解答)

muscle contraction with a change in the length of the muscle

#21
正面 (问题)

Concentric contraction =

背面 (解答)

muscle applies force as it shortens

#22
正面 (问题)

Eccentric / plyometric contraction =

背面 (解答)

muscle applies force as it lengthens

#23
正面 (问题)

what are the Types of Dynamic Exercise?

背面 (解答)

• Constant resistance • Variable resistance • Eccentric loading • Plyometrics • Speed loading • Isokinetic exercise

#24
正面 (问题)

Constant resistance =

背面 (解答)

constant load throughout a joint’s range of motion