Sports & Fitness: Performance Training, Rules & Recovery

Elite athletic performance and general fitness are sustained through structured hypertrophy strategies, sport-specific conditioning, and rigorous adherence to injury prevention protocols.

Trainer helping to ease the strain

Lactic Acid Training Exercises

Lactic acid training is used by body builders and other athletes who want to lose weight quickly but also gain muscle and endurance. A variety of exercises can be included as part of lactic acid training, but all of them involve pushing your body to its limits using resistance training.

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Man using hand weights

Supersets vs. Burnout Sets

Bodybuilders practice a variety of weightlifting techniques, each with its own specific purpose. Both supersets and burnout sets are meant to help build muscle, as opposed to focusing on building strength, but they differ slightly in how they accomplish that goal.

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Man with Sprained Ankle

Does Walking With Crutches Strengthen Abs?

If you are injured, walking with crutches can be a daunting task. It takes coordination and balance, as well as muscle strength, primarily in your arms, although your abdominal muscles will also be engaged..

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Man and woman exercising on elliptical trainer.

Leg Fatigue From Cardio on an Elliptical

Using an elliptical machine gives you an effective cardio workout and is much less stressful on your muscles and joints than running or jogging on a hard surface. However, working out on an elliptical machine requires a certain amount of stamina and endurance just like any other cardio exercise.

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Bloated Stomach After Working Out

Abdominal bloating after a workout can be a painful and discouraging experience, but it is not necessarily cause for concern. It might be what you are eating and drinking that is causing the problem, and making simple adjustments can remedy the situation.

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Leg Spasms After Running

A leg spasm, often referred to as a charley horse or leg cramp, is the result of a sudden, often painful, contraction of the muscles. Many athletes, particularly runners, have experienced this phenomenon.

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Girl with sore foot on gray background

Does Exercise Cause Muscle Twitching?

Experiencing twitching muscles after an exercise session is not uncommon, particularly if your muscles are fatigued or you are not getting enough electrolytes in your body. Taking measures to alter your workout routine and watch your diet can help avoid twitching in many cases.

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Woman stretching in forest

Tight Hamstrings While Running with Soreness Afterwards

Tight hamstrings on a run can cause a muscle cramp or muscle spasm. When your muscle cramps, it doesn't contract smoothly while running, which can lead to sore and tender muscles. In many cases, the cause of hamstring cramps is something simple and is easily correctable by taking preventive measures.

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I'm Shaking After a Workout

Shaking or trembling after a workout might be cause for alarm, but in many cases, the problem is due to something simple, such as fatigue or malnourishment. Taking measures before and after working out can help prevent the shaking in many cases, and it is often easily treatable when it occurs.

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Runner in motion

Aching Legs Days After Running

Soreness that occurs several days after running is known as delayed-onset muscle soreness, or DOMS. DOMS pain can last up to seven days but should start to dissipate three to four days after running.

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Man and beautiful woman using a stepper in a gym

What Causes Weakness and Dizziness After Walking on a Treadmill?

Ideally, walking on a treadmill should make you feel invigorated or maybe a bit tired, but feeling weak and dizzy is a sign something is wrong. Over-exerting on a treadmill by walking faster than you're able to, at too much of an incline or for too long can cause weakness and dizziness.

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Bruised Legs After Exercising

Bruising on the legs is usually caused by something striking them, but it can also be due to an underlying weakness in the blood vessels. Intense exercise, such as marathon running, cycling and contact sports, can also bring about bruising to the legs.

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My Legs Are Sore From Squats: Can I Still Work Out?

Soreness is a normal part of working out, both for beginners and more seasoned bodybuilders. Whether or not you can work out with sore leg muscles depends on the severity of your pain. In some cases, a light workout can help relieve the soreness, although only on a temporary basis.

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drinking water

How to Avoid Nausea When Running

Experiencing nausea while running can be due to a variety of factors. Dehydration, malnutrition, heat exhaustion and overexertion are common causes. Taking some simple precautionary steps before and while running can help you avoid nausea in many cases.

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trail runner athlete running on forest trail.

Gross Hematuria After Exercise

Seeing blood in your urine – medically referred to as hematuria – after an exercise session can be frightening, but it is not always a cause for concern, according to Capital Nephrology Medical Group.

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Exercise & Blacking Out

Fainting or "blacking out" while exercising can be dangerous, but the underlying cause is not always a serious condition, according to the National Institutes of Health Medline Plus. Malnutrition, overheating, dehydration and stress can all lead to blacking out, and exercise can hasten the process.

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Athlete doing Push-ups

Can You Get Strong by Only Doing Pushups?

The pushup is a simple and time-honored exercise and measure of fitness. It can be done almost anywhere as long as there is room to move. Using pushups to get strong can be accomplished -- but it requires some knowledge of form and how the body works.

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Stomach Protrusions With Sit-Ups

Seeing a lump or protrusion in your belly while doing situps can be alarming, especially if there are more than one. The most likely cause of the protrusion, or protrusions, is a hernia -- a weakness in the wall of the abdominal tissue.

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Why Do I Burp After Exercise?

Burping and other gastrointestinal disturbances while exercising are not uncommon. According to experts at Rice University, studies on marathon runners and triathletes have shown that up to 50 percent of them experienced some form of GI distress, including burping.

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