Which of the following techniques to flip a heavy-equipment tire commonly uses the narrowest hand position or grip? Show
With regard to core training, when is instability exercise best applied?
in trained athletes who are rehabilitating from an injury
Which of the following is an advantage of variable-resistance training?
matches the changes in joint leverage
Which of the following does NOT occur when a ground-based free weight training exercise is performed on an unstable surface?
need to perform other exercises decreases
Which of the following is an advantage of machine-based training?
enhanced ability to target specific muscle groups
Training on instability devices can reduce the overall agonist force production capacity and power output of the athlete to less than _______ of what can be achieved in a stable condition.
If a strong athlete incorporates only unilateral training into his or her program, what might the strength and conditioning professional expect to happen?
A bilateral facilitation will occur
Which of the following muscles are primarily trained during the single-leg Romanian deadlift exercise?
Which of the following is a rationale for using variable-resistance training methods?
to accommodate the changing mechanical advantages associated with constant-loaded exercises
Weaker individuals often display _______________ and may benefit from the use of unilateral training methods.
Which of the following factors is held constant during a traditional resistance training exercise?
The single-leg Romanian deadlift can be performed with the weight held in the hand of the same side of the body as the support leg (_______) or in the hand of the opposite side of the body as the support leg (_______).
ipsilateral; contralateral
Which of the following is the best exercise to train the anatomical core musculature in individuals who want to improve sport performance?
If during the tire flip the athlete's hips rise faster than the shoulders during the initial pushing motion, what is an effective correction to give to the athlete?
keep the hips slightly below the shoulders in this position
Which of the following factors is held constant during an accommodating resistance training exercise? Resistance training (also called strength training or weight training) is the use of resistance to muscular contraction to build strength, anaerobic endurance and size of skeletal muscles. Resistance training is based on the principle that muscles of the body will work to overcome a resistance force when they are required to do so. When you do resistance training repeatedly and consistently, your muscles become stronger. A well-rounded fitness program includes strength training to improve joint function, bone density, muscle, tendon and ligament strength, as well as aerobic exercise to improve your heart and lung fitness, flexibility and balance exercises. Australia’s physical activity and sedentary behaviour recommend that adults do muscle strengthening activities on at least two days each week. Vary your progressive resistance training program every six to eight weeks to maintain improvement. Variables that can impact on your results include:
If you vary your resistance training program through the number of repetitions and sets performed, exercises undertaken and weights used, you will maintain any strength gains you make. Examples of resistance trainingThere are many ways you can strengthen your muscles, whether at home or the gym. Different types of resistance training include:
Health benefits of resistance trainingPhysical and mental health benefits that can be achieved through resistance training include:
Basic principles of resistance trainingResistance training consists of various components. Basic principles include:
Resistance training for beginnersPre-exercise screening is used to identify people with medical conditions that may put them at a higher risk of experiencing a health problem during physical activity. It is a filter or safety net to help decide if the potential benefits of exercise outweigh the risks for you. Print a copy of AUSactive’s adult pre-exercise screening and discuss it with your doctor, allied health or exercise professional. The Australian Physical Activity and Sedentary Behaviour recommend that you undertake strength building activities at least two days a week. These activities should work all the major muscle groups of your body (legs, hips, back, chest, core, shoulders, and arms). Starting resistance trainingIt is important to pay attention to safety and form in order to reduce the risk of injury. An AUSactive registered can help you develop a safe and effective program. To start, a typical beginner’s strength training program involves:
Your aim is to gradually increase to two to three sets for each exercise – comprising eight to 12 reps, every second or third day. Once you can comfortably complete 12 reps of an exercise, you should look at progressing further. Warming up before resistance trainingWarm up your body before starting your strength training exercises. Start with light aerobic exercise (such as walking, cycling or rowing) for around five minutes in addition to a few dynamic stretches. Dynamic stretching involves slow controlled movements through the full range of motion. Advanced resistance trainingTo get the most gain from resistance training, progressively increase the intensity of your training according to your experience and training goals. This may mean increasing the weight, changing the duration of the contraction (the time during which you sustain holding the weight reducing rest time or increasing the volume of training. Once you’ve been doing resistance training regularly for four to six weeks, you can progressively increase the intensity of your training as your muscles adapt. Research suggests that expert supervision and instruction may improve your results as it will ensure you practice proper technique and follow safety principles. If you experience any discomfort or pain, contact a health professional before progressing with your program. Repetitive maximum (RM) and resistance trainingThe best way to develop muscle strength is for the muscle to contract to its maximum potential at any given time – maximal voluntary contraction (MVC). In resistance training, MVC is measured by the term XRM, where RM is the maximum number of repetitions that can be completed with a given resistance or weight. X is the number of times a certain weight can be lifted before the muscle fatigues. It is the RM range that determines what type of improvements the muscles will make. The optimal range for improving muscle strength is 8–12 RM for a beginner and 2–6 RM for the more advanced. For example, the formula 7RM means the person can lift the weight (let’s say 50 kg) seven times before the muscles are too fatigued to continue. Higher weights mean lower RM – for example, the same person could possibly lift a 65 kg weight, but fewer than seven times. Lower weights typically result in a higher RM – for example, the same person could lift a 35 kg weight about 12 times before muscle fatigue sets in. MVC principles can help you gain the most benefit from your workouts. A good rule of thumb is to only increase the weight between two and 10 per cent once you can comfortably do two repetitions above the maximum. Applying MVC to meet advanced resistance training goalsThe principles of strength training involve manipulation of the number of repetitions (reps), sets, tempo, exercises and force to overload a group of muscles and produce the desired change in strength, endurance, size or shape. Specific combinations of reps, sets, exercises, resistance and force will determine the type of muscle development you achieve. General guidelines, using the RM range, include:
Muscle recovery during advanced resistance trainingMuscle needs time to repair and grow after a workout. Not giving your muscles enough time to recover means they will not get bigger or stronger. A good rule of thumb is to rest the muscle group for at least 48 hours. Once you have sufficient experience in resistance training, and with the support of a qualified allied health or exercise professional, you might like to consider a split program. For example, you could work your upper body on Mondays and Fridays, and your lower body on Wednesdays and Sundays. Gaining strength from advanced resistance trainingMost beginners experience a rapid increase in strength, followed by a plateau or levelling-out of strength improvements. After that, gains in muscle strength and size are hard-earned. When you start resistance training, most of your initial increase in strength is due to a phenomenon called neural adaptation. This means that the nerves servicing the muscles change their behaviour. The nerves are thought to fire more frequently (prompting increased muscle contraction) and more motor units are recruited to perform the contraction (a motor unit is the nerve cell and its associated muscle fibres). This means you become stronger, but the muscles remain the same size – you’ve hit the plateau. In time, muscle cells respond to continuous resistance training by increasing in size (hypertrophy), so don’t be discouraged by reaching the plateau – it is actually an encouraging sign that gains in muscle size are soon to follow. Various techniques may help you shorten the plateau period. Varying your workouts can help you push past a plateau. The theory of variation is that you can coax growth and strength from your muscles by surprising them with a range of different stresses. The muscles will respond in size and strength as they are forced to adapt. Be guided by your gym instructor or personal trainer, but suggestions include:
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