Weight training

Weight and resistance training are popular methods of strength training which use gravity (through weight stacks, plates or dumbells) or elastic/hydraulic resistance respectively to oppose muscle contraction. Each method provides a different challenge to the muscle relating to the position where the resistance to muscle contraction peaks. Weight training provides the majority of the resistance at the initiating joint angle when the movement begins, when the muscle must overcome the inertia of the weight's mass (however, if repetitions are performed extremely slowly, inertia is never overcome and resistance remains constant). In contrast, elastic resistance provides the greatest opposition to contraction at the end of the movement when the material experiences the greatest tension while hydraulic resistance varies depending on the speed of the submerged limb, with greater resistance at higher speeds. In addition to the equipment used, joint angles can alter the force output of the muscles due to leverage and the relative overlap of actin and myosin contractile proteins.

Resistance training

Resistance training is a form of strength training in which each effort is performed against a specific opposing force generated by resistance (i.e. resistance to being pushed, squeezed, stretched or bent). Exercises are isotonic if a body part is moving against the force. Exercises are isometric if a body part is holding still against the force. Resistance exercise is used to develop the strength and size of skeletal muscles. Properly performed, resistance training can provide significant functional benefits and improvement in overall health and well-being.

The goal of resistance training, according to the American Sports Medicine Institute (ASMI), is to "gradually and progressively overload the musculoskeletal system so it gets stronger." Research shows that regular resistance training will strengthen and tone muscles and increase bone mass.

Isometric training

Isometric exercise or 'isometrics' are a type of strength training in which the joint angle and muscle length do not change during contraction. Isometric exercises are opposed by a force equal to the force output of the muscle and there is no net movement. This mainly strengthens the muscle at the specific joint angle at which the isometric exercise occurs, with some increases in strength at joint angles up to 20° in either direction depending on the joint trained. In comparison, isotonic exercises strengthen the muscle throughout the entire range of motion of the exercise used.

Information from: wikipedia

There are various types of weight training for strength and many techniques that are involved. Please click on the weight training topic you would like to learn more about and see videos.

Can strength training help you lose weight?

An exercise like sit-ups or abdominal crunches uses a much smaller volume of muscle than whole-body aerobic exercise and is therefore less efficient at burning calories than an exercise like jogging. Instead, high weight/low rep exercises can be used to maintain or increase the body's muscle mass while dieting. This helps to prevent the metabolic slowdown that otherwise often limits the effect of dieting and causes post-diet weight gain.

This too depends on the type of strength training utilized. Because weight training generally is used for bulking, this type of exercise more than likely will increase weight because of the muscle gain. However, when resistance or circuit training is used, because it is not geared towards bulking, women tend to lose weight more quickly.

Because most strength training builds lean muscle, it is natural for a person to gain weight, initially, since muscle is heavier than fat. However, as lean muscle is built, as a result, the weight will begin to regulate and decrease. Lean muscle helps raise the metabolism which helps keep weight down.

Information from: wikipedia