Maximus Gage
There is a common misconception that cardio exercises can cause muscle loss. However, this is a myth. Cardio exercises do not cause muscle loss and can help maintain and build muscle mass. The order in which you complete your training sessions depends on your goals. If you want to build muscle, it is recommended to do weight training before cardio as doing cardio first may hinder muscle gains. Light cardio can be used as a warm-up before strength work to reduce the risk of injury.
| Characteristics | Values |
|---|---|
| Does cardio decrease muscle? | No, this is a common misconception. |
| Scientific evidence | Studies have shown that cardio exercise can increase muscle protein synthesis, which is the process by which your body builds muscle tissue. |
| Anecdotal evidence | Some people have reported losing muscle mass after doing cardio, while others have not. |
| Recommendations | If your goal is to build muscle, do strength training before cardio to avoid fatigue. |
| Light cardio can be used as a warm-up before strength training. | |
| Make sure to eat enough protein and calories to build muscle. |
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What You'll Learn
Long-distance cardio training can waste muscle
It is a common misconception that cardio "kills" muscle gains. While this is not exactly true, long-distance cardio training can waste muscle.
When comparing competitive athletes in endurance training to competitive sprinters, it is evident that long-distance cardio training can waste muscle, while sprinting can build muscle mass. This is because sprinting causes small microtears and resistance training increases muscle protein synthesis, leading to muscle hypertrophy. However, scientific research on long, steady-state cardio training shows that it does not negatively impact muscle mass. Instead, cardio and aerobic activity can improve muscle quality and protect against losing muscle innervation capability. A long-term study comparing sedentary participants to aerobically trained participants found that grip and knee extensor strength increased significantly more in the trained group, suggesting that aerobic activity can prevent strength loss. Additionally, aerobic exercise can increase muscle protein synthesis and hypertrophy.
Despite this, it is important to note that too much aerobic exercise can lower peak power, which is a significant correlator of maximal speed. Prolonged cardio can also slow down metabolism, making it harder to lose weight. The repetitive nature of cardio can also lead to injuries and impaired motor control. Therefore, it is recommended to vary cardio routines to avoid plateaus and potential negative consequences.
To optimize muscle gains, it is generally advised to prioritize resistance training and ensure adequate nutrition and recovery. If the goal is to gain muscle, it is recommended to perform strength training before cardio to avoid fatigue and maintain proper form during weight-training. However, light-intensity cardio can be beneficial as a warm-up before strength work to reduce the risk of injury. Ultimately, the effectiveness of cardio and its impact on muscle mass depend on individual goals and body types.
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Excessive cardio can lead to a breakdown of muscle tissue
However, doing too much cardio can cause soreness and hinder muscle growth. This is because excessive cardio can cause excessive stress on the body, muscles, and tissues, leading to elevated cortisol levels, which can lead to weight gain and muscle mass loss. Additionally, too much cardio can cause testosterone levels to drop, which can also lead to muscle mass loss and increased body fat in men.
The impact of cardio on muscle tissue also depends on the type of cardio being performed. For example, running is more physically demanding than cycling and causes more eccentric contractions, which can cause more significant muscle damage. Similarly, high-impact cardio, which requires both feet to be off the ground at the same time, such as running, jumping, or high knees, can hinder muscle growth processes and encourage muscle catabolism.
Nevertheless, for most people, cardio should not prevent gaining strength and size, as long as resistance training is prioritized and the body is properly fueled with adequate nutrition and recovery. Light cardio can even be beneficial as a warm-up before strength work, as it can help reduce the risk of injury. Ultimately, the key is to ensure that aerobic training does not interfere with the quality of resistance training.
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Cardio before strength training can hinder muscle gains
There is a common belief in the fitness community that cardio workouts inhibit muscle growth. However, this is not entirely true. While cardio can hinder muscle gains if done before strength training, it does not necessarily stop muscle growth altogether. The key is to ensure that cardio exercises do not interfere with the quality of strength training.
When it comes to the order of workouts, it is generally recommended to prioritize strength training over cardio if the goal is to increase muscle size and strength. Starting with heavy cardio can lead to fatigue, causing a decrease in performance and an increased risk of injury during strength training. A systematic review showed that when cardio preceded resistance exercise in the same session, lower-body one-rep max performance was diminished compared to when resistance exercise came first. Similarly, a study published in the Journal of Strength and Conditioning Research found that men who performed high-intensity cycling or running before strength training had compromised strength endurance performance, indicating an interference effect.
However, this does not mean that cardio should be avoided altogether. Cardio can be beneficial as a warm-up before strength training, especially if it is light-intensity, as it can help warm up the muscles and reduce the risk of injury. Additionally, if the overall fitness goal is cardio-focused or the goal for a particular workout is cardio-based, it is reasonable to place cardio first.
To successfully combine cardio and strength training without hindering muscle gains, it is essential to space out the workouts. Ideally, there should be at least six hours between the two types of exercises, with 24 hours being the ideal gap. It is also crucial to prioritize the type of exercise based on individual goals. If increasing muscle strength or size is the main objective, it is recommended to lift weights before completing cardio exercises.
While cardio may not directly hinder muscle growth, it can impact an individual's ability to perform during strength training. Therefore, it is important to ensure adequate recovery and nutrition to support muscle repair and growth.
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Cardio increases blood flow to muscles, aiding muscle growth
Cardio, or cardiovascular exercise, is often associated with burning calories and improving heart health. However, incorporating cardio into your fitness routine can also enhance muscle growth by increasing blood flow to the muscles.
Cardio exercises, such as running or cycling, are dynamic or rhythmic activities that feature brief, repeated muscle contractions. These exercises increase your heart rate and cause you to breathe more deeply, using oxygen as a fuel source. As a result, the body experiences a range of cardiovascular and respiratory responses, including increased heart rate, blood pressure, and ventilation, which are all part of the "central command" response to exercise.
This increase in blood flow during cardio means more oxygen and nutrients are delivered to the muscles. This aids in muscle protein synthesis and overall muscle gain. Additionally, cardio supports muscle recovery by promoting the removal of metabolic waste, helping muscles repair and grow.
While cardio is not the most direct way to increase muscle mass, it improves your training capacity and ability to recover from intense workouts. For example, the better your cardiovascular fitness, the longer it will take for you to fatigue during a workout, allowing you to increase the number of repetitions within your sets, which is key to building muscle.
However, it's important to note that not all cardio exercises are equal in their impact on muscle growth. High-intensity interval training (HIIT) is known to promote muscle growth by boosting cardiovascular fitness and muscle hypertrophy. On the other hand, too much cardio can lead to muscle protein breakdown if it's not balanced with adequate strength training and recovery. Additionally, increased cardio may elevate stress hormones like cortisol, which can negatively affect muscle growth. Therefore, it's essential to incorporate a variety of training methods and prioritize resistance training if your primary goal is to increase muscle mass.
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Cardio can improve recovery, helping muscles repair and grow
Cardio has been found to improve recovery, aiding in muscle repair and growth. This is especially true when it comes to light cardio, which can be done on recovery days to increase blood flow and promote muscle recovery. It is important to note that excessive cardio can interfere with muscle growth and strength gains, so it should be balanced with strength training.
Doing light cardio after resistance exercises may speed up recovery. Research has shown that performing low-intensity cardio after muscle-damaging eccentric exercises improved muscle recovery compared to not doing any post-workout cardio. This type of cardio increases blood flow to the muscles, clearing out metabolic waste and reducing muscle soreness.
It is recommended to separate cardio and strength training sessions by at least six hours or do them on separate days to avoid interference with muscle growth. Doing cardio first can lead to fatigue, affecting performance in strength training and potentially resulting in poor form and injury. However, light-intensity cardio can be used as a warm-up before strength work to reduce the risk of injury.
Overall, cardio is beneficial for improving recovery and promoting muscle repair and growth when done in moderation and balanced with strength training. It is important to include recovery days in any training program to allow the body to rest and repair, preventing overtraining and its negative consequences.
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Frequently asked questions
No, cardio does not decrease muscle mass. However, if your goal is to build muscle, it is recommended to do strength training before cardio to avoid fatigue.
It is recommended to do strength training before cardio to avoid fatigue and injury.
Yes, it is okay to do cardio and strength training on the same day. However, the order of exercises depends on your goals. If building muscle is your priority, do strength training first.
Yes, running is more physically demanding than cycling and causes more eccentric contractions, which lead to more significant muscle damage.
Cardio increases blood flow to the muscles, delivering more oxygen and nutrients to the muscle tissue, which helps with recovery and building muscle mass. Cardio can also increase the production of hormones essential for muscle growth and repair.
