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Do Strength Exercises Contribute to Weight Loss?
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Among individuals leading an active lifestyle, there is a belief that strength training is necessary for increasing muscle mass, while reducing body fat necessitates only aerobic activity. However, are these assertions consistent with reality? Do strength exercises genuinely not assist in weight loss?
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The significance of resistance exercises during fat loss
During fat loss, the primary objective of resistance exercises is to prevent muscle mass loss. One of the biggest challenges for individuals with an energy deficit, particularly for advanced individuals, is the loss of previously achieved outcomes. Muscles that are not sufficiently engaged will atrophy, hence the immense importance of regular resistance training.
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Is it strength training or cardio that exerts a greater influence on weight loss?
Researchers conducted an experiment on a group of 10,500 men to find a relationship between the type of physical activity, body weight, and waist circumference. They found a higher weight gain index in men who spent a significant portion of the day sitting (e.g. watching television). However, comparing those who engaged in strength training with those who did aerobic activity showed that the first group had a higher BMI than the second group, but a lower amount of fat tissue, as confirmed by smaller waist circumferences. Cardio training also has significance – it is an effective tool for increasing caloric deficit. Does this mean that one should completely abandon aerobic activity in favor of strength training? The best solution for the reduction of fat tissue is therefore the combination of strength training with caloric deficit and aerobic activity.
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Which aerobic exercises should be chosen to achieve fat reduction?
In order to achieve the objective of fat reduction, it is important to focus primarily on aerobic exercises that bring us pleasure. Running, cycling, inline skating, swimming in a pool or participating in Zumba activities - all these activities will deepen the caloric deficit. However, it is important to remember not to perform them before strength training, as this can have negative effects on the results. Therefore, it is advisable to consider aerobic exercises after strength training or on a rest day from exercise, but ensuring that there is sufficient time for the body to recover.
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Whether increasing the number of repetitions during reduction ensures better results - reality or fallacy?
The claim that one should perform a large number of repetitions in order to reduce fat is not an irrefutable fact. During such training, if the intensity and volume are at an appropriate level, fat reduction is possible. However, it is important to note that high repetition ranges are associated with lower loads, which in practice means that strength may be reduced. Therefore, this should be taken into account when planning the training to avoid excessive muscle mass loss, which is an undesirable side effect. For this reason, it is not necessary to perform a large number of repetitions during fat reduction. Thanks to appropriate progression of the load and creation of a caloric deficit through diet, as well as the introduction of aerobic activity, small repetition ranges are sufficient.
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Is it practicable to successfully shed weight without gym use?
As previously alluded to, strength training is a highly beneficial tool during the fat reduction process. However, individuals who, for whatever reason, do not want or cannot exercise in the gym can also achieve the desired results. Recently, home workouts have gained popularity and serve as an ideal alternative to traditional gym exercises. They can be performed at any time of the day, and the only requirement is some free space. To prevent muscle loss during fat reduction, performing exercises using one's own body weight should be sufficient. However, to achieve the best results, one should consider purchasing resistance bands, mini bands, TRX bands, kettlebells, or adjustable dumbbells. Each of these pieces of equipment effectively expands the range of possible exercises. Additionally, everyday items such as water bottles as dumbbells, broomsticks as bars, or two chairs with backrests as dip bars can be utilized. There are no limits to the beauty of imagination.
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Summary
The principal function of strength training in the realm of fat reduction is primarily to prevent muscle mass loss. If muscles are not adequately developed, there is unfortunately a propensity for them to gradually diminish. In the reduction process, both strength training and aerobic activity hold significance. To achieve the desired outcomes, the optimal solution is to merge these two types of activity with a caloric deficit.
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• 22.03.2026
Mekary R.A. et al., Weight training, aerobic physical activities, and long-term waist circumference change in men, „Obesity” 2015, 23(2), 461–467.
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