Chapter 13- Resistance Training Concepts Flashcards
General adaptation syndrome
A term used to describe how the body responds and adapts to stress
In this case the stress being placed on the body is the weight being lifted during resistance training.
For adaptation to occur, the body must be confronted with a stressor or some form of stress that creates the need for a response. The three stages of response to stress are:
- Alarm reaction
- Resistance development
- Exhaustion
Alarm reaction stage
Initial reaction to stressor such as increased oxygen and blood supply to the necessary areas of the body.
Delayed onset muscle soreness (DOMS)
Pain or discomfort often felt 24 to 72 hours after intense exercise or unaccustomed physical activity.
During this period of DOMS, any attempt at replicating or advancing the soreness-inducing exercise will be limited by the factors contributing to the soreness. This could be con- sidered an “alarm reaction.” Most experts agree minimizing DOMS involves starting a progressive training program at a low intensity and introducing overload gradually
Resistance development
The body increases its functional capacity to adapt to the stressor.
After repeated training sessions, the human movement system will increase its capability to efficiently recruit muscle fibers and distribute oxygen and blood to the proper areas in the body.
Exhaustion stage
Prolonged stress or intolerable amounts of stress can lead to exhaustion or distress. When a stressor is too much for any one of the physiologic systems to handle, it causes a breakdown or injury such as (6):
- Stress fractures
- Muscle strains
- Joint pain
- Emotional fatigue
Periodization
Division of a training program into smaller, progressive stages.
Principle of specificity or specific adaptation to imposed demands (SAID principle)
Principle that states the body will adapt to the specific demands that are placed on it.
Type 1 muscle fibers
slow-twitch muscle fibers are smaller in diameter, slower to produce maximal tension, and more resistant to fatigue.
Type I fibers are important for muscles that need to produce long-term contractions necessary for stabilization, endurance, and postural control.
Type ll muscle fibers
Type II or fast-twitch muscle fibers are larger in size, quick to produce maximal tension, and fatigue more quickly than type I fibers. These fibers are important for mus- cles producing movements requiring force and power such as performing a sprint.
Mechanical specificity
Refers to the weight and movements placed on the body.
I. E. To develop maximal strength in the chest, heavy weights must be used during chest-related exercises.
Neuromuscular efficiency
refers to the speed of contraction and exercise selection
Metabolic specificity
It refers to the energy demand placed on the body. To develop endurance, training will require prolonged bouts of exercise, with minimal rest periods between sets.
Stabilization
Stabilization is the human movement system’s ability to provide optimal dynamic joint support to maintain correct posture during all movements.
Repeatedly training with controlled, unstable exercises increases the body’s ability to stabilize and balance itself.
Muscular endurance
The ability to produce and maintain force production for prolonged periods
of time.
Muscular hypertrophy
the enlargement of skeletal muscle fibers in response to being recruited to develop increased levels of tension, as seen in resistance training (30). Mus- cle hypertrophy is characterized by an increase in the cross-sectional area of individual muscle fibers resulting from an increase in myofibril proteins (myofilaments)
Kraemer et al. (4) demonstrated that 24 weeks of training 3 days per week with 3 sets of 8–12 repetitions per exercise improved muscle hypertrophy and body composition.