AbstractBackground: The effect of the Valsalva maneuver applied in resistance exercise has shown contradictory results. This study aims to investigate the effect of the Valsalva maneuver on resistance exercise by examining the changes that occur by applying the Valsalva maneuver during trunk flexion and extension resistance exercise in healthy adults. Design: Randomized controlled trial. Methods: 34 healthy adults were conveniently recruited. According to the with or without Valsalva maneuver, the flexion and extension of the trunk were measured and evaluated. Results: Paired t test showed that there was a statistically significant difference in maximum torque of trunk flexion in the resistance exercise with Valsalva maneuver. However, there was no statistically significant difference in trunk extension (p<.05), in the total and average work of trunk flexion and extension (p<.05). Conclusion: The results of this study in which the difference in the amount of exercise according to the application of the Valsalva maneuver was not significant, show that the practice of the Valsalva maneuver, which has a risk of injury, should be avoided in rehabilitation exercises. Show
By Prodyut Das Valsalva maneuver - A forceful exhalation against a closed airway that increases pressure in the thoracic cavity and results in decreased venous return. During resistance training, individuals often hold their breath to generate greater force. This results in increased intra-abdominal and intrathoracic pressures, which limits venous return and subsequently does not significantly alter EDV (end-diastolic volume). This mechanism of enhancing force-generating capacity is referred to as the Valsalva technique. The Valsalva Maneuver The Valsalva maneuver, a natural response to lifting heavy loads, is characterized by a forced exhalation against a closed glottis. During forced exhalation, a sudden increase in intra-abdominal and intrathoracic pressures is produced by the contractions of the abdominal and respiratory muscles. Elevated pressures compress the blood vessels within the chest cavity, leading to a decrease in venous return and CO. In addition, compression of the aorta leads to stimulation of the baroreceptors, producing a reflex-induced bradycardia to compensate for the increased pressures. Aortic pressure subsequently rises, stimulating sympathetic activity. HR and BP rise in response to maintain CO and perfusion. At the cessation of the forced exhalation, venous return rapidly increases, intra-abdominal pressures drop, and CO is increased, dramatically increasing the mechanical load on the heart. The Valsalva maneuver can be dangerous due to the sudden and abrupt changes in BP. These dramatic changes in HR, BP, and CO may produce symptoms including dizziness, light headedness, and syncope. However, the Valsalva technique can help protect against injury during heavy weight lifting. The supporting ligaments of the spine can only support 4 to 5 lb of pressure before failing.5 Therefore performing the Valsalva maneuver during heavy lifts, such as the Roman dead lift, squats, bench press, and clean and jerk, assists core musculature in supporting the spine and decreases the compressive load on the intervertebral discs. Strength and conditioning coaches often recommend the Valsalva technique during weight-lifting exercises requiring a stable core. Individuals are coached to perform the maneuver during the work phase of the lift. Individuals should inhale before the exercise, hold their breath through the most difficult phase of the lift, and exhale to complete the lift. Because the consequences of improper breathing with weight lifting can be severe, proper education is essential. Valsalva technique in Women's Incontinence ExerciseUsually, women do not notice improvement in incontinence for the first 6 to 8 weeks of an exercise program.This may be too discouraging for some. Physical therapists should take care to note that 30% of women are unable to contract their pelvic floor muscles voluntarily.Performing the exercise improperly can have an undesired effect by increasing intra-abdominal pressure. Many women actually bear down by holding their breath and performing a Valsalva's maneuver or substitute for the appropriate muscle contractions by contracting muscles in the thighs or buttocks. Consequently, mere verbal or written instruction may be inadequate preparation to undertake a home program, which is sometimes known by some patients and health professionals as a Kegel exercise program. PMEs are often called Kegels, named for the obstetrician who performed the seminal research that postulated that pubococcygeus muscle activity provides critical support for the bladder. Valsalva technique in Elderly PeopleRead more about Valsalva on PubMed Appropriate precautions should be followed when using exercise with elderly individuals. Severe osteoporosis may even pose limitations for ROM exercises. Older hypertensive individuals who perform a Valsalva's maneuver during strenuous resistive exercise risk a dangerous elevation in blood pressure. Exercise-induced muscle damage and soreness occur especially after vigorous eccentric exercise in both young and old subjects. Although rates of tissue repair are similar for healthy active subjects, older subjects show significantly greater muscle shortening. This may predispose the older individual to a greater risk of further injury from exercise. Return from Valsalva Maneuver to Home Page
Why is the Valsalva maneuver not recommended during exercise?Not only does the Valsalva maneuver create high pressure in the torso, they say, it also increases pressure in the brain, heart, and blood vessels which could result in a stroke, ruptured aneurysm, or chronic high blood pressure.
Is Valsalva maneuver safe during exercise?It has been proposed that the performance of the VM during resistance exercise increases the stability of the spine because of augmented intra-abdominal pressure (IAP). However, resistance trainers are often advised to avoid the VM during resistance exercise because of potential adverse vascular events.
How does the Valsalva maneuver affect blood pressure during exercise?The combine effect of exercise and increased intrathoracic pressure due to the Valsalva maneuver was a significant increase in systolic blood pressure in the athletes compared with controls.
Does the Valsalva maneuver increase strength?Critics of the Valsalva maneuver—the technical definition for holding your breath while lifting weights—say it increases your risk of fainting, aneurysm, stroke, and blood vessel damage, and that there's no evidence that it helps you lift more weight.
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Why is it important to avoid the Valsalva maneuver during resistance exercise?
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