Should I avoid the Valsalva maneuver (holding breath) during heavy resistance training and instead exhale during the concentric phase to prevent dangerous acute hypertension?

Avoid the Valsalva Maneuver During Heavy Resistance Training

You should exhale during the concentric (lifting) phase of resistance exercise rather than holding your breath, as this dramatically reduces dangerous blood pressure spikes while maintaining adequate performance. The evidence clearly demonstrates that the Valsalva maneuver produces extreme and potentially hazardous hypertensive responses during heavy lifting 1.

The Blood Pressure Evidence is Striking

The study you referenced is accurate and represents the most direct evidence on this question. When athletes performed maximal leg press with breath-holding (Valsalva), mean arterial pressure reached 311/284 mmHg, with one individual hitting 370/360 mmHg 1. When the same athletes lifted the identical weight while exhaling slowly, blood pressure dropped to 198/175 mmHg—a dramatic and clinically significant reduction 1. This represents approximately a 35-40% reduction in blood pressure response simply by changing breathing technique.

Additional research confirms this pattern across different exercises and intensities:

• Valsalva consistently produces the highest blood pressure elevations during both arm curls and leg extensions 2
• Even at low-to-moderate intensities (bodyweight to 50% of 10-rep max), breath-holding increases systolic pressure by 16-23% compared to controlled breathing 3
• The cardiovascular strain includes elevated rate-pressure product (myocardial oxygen demand) by 20-30% 3

Guideline Recommendations Support Breathing Technique

The American Heart Association explicitly addresses this issue: "excessive BP elevations have been documented with high-intensity RT...such elevations are generally not a concern with low- to moderate-intensity RT performed with correct breathing technique and avoidance of the Valsalva maneuver" 4. This guideline emphasizes that proper breathing technique is a fundamental safety consideration, not an optional detail.

The AHA further notes that resistance training appears safe in cardiac patients and those with controlled hypertension when performed at appropriate intensities (40-60% of 1-RM) with proper technique 4. The implication is clear: breathing technique matters for cardiovascular safety.

The Performance Trade-off is Minimal

A common concern is whether avoiding Valsalva compromises lifting performance. The evidence shows:

• Forced exhalation produces similar peak force to Valsalva for most muscle groups (shoulder adduction, elbow extension, knee extension) 5
• Exhalation during the concentric phase offers no performance disadvantage compared to inhalation, while providing better cardiovascular safety 2
• Recent data shows inhalation during lifting actually reduces performance (fewer sets, lower volume) compared to exhalation 6

Recent Vascular Findings Add Concern

The most recent research (2026) demonstrates that Valsalva during resistance exercise acutely increases arterial stiffness (pulse wave velocity), which did not occur with paced breathing during the same exercises 7. This suggests the Valsalva may have adverse vascular effects beyond just acute blood pressure elevation.

Practical Implementation

Exhale during the concentric (lifting/pushing) phase and inhale during the eccentric (lowering) phase. This pattern:

• Maintains trunk stability adequately for most lifters
• Prevents glottis closure and intrathoracic pressure buildup
• Reduces cardiovascular strain substantially
• Does not compromise strength output for the vast majority of exercises

Important Caveats

• The extreme blood pressures (370/360 mmHg) occurred during maximal effort (100% 1-RM) lifts 1. At submaximal intensities (60-85% 1-RM), the absolute pressures are lower but the relative increase with Valsalva persists 2, 1
• For competitive powerlifters attempting true 1-RM lifts, some degree of breath-holding may be unavoidable for spinal stability, but this should be minimized and these athletes should be screened for cardiovascular risk factors
• The studies showing safety of resistance training in cardiac patients specifically used moderate intensities with proper breathing technique 4

The evidence overwhelmingly supports exhaling during lifting to prevent dangerous acute hypertension, with the added benefit of no performance penalty for the vast majority of training scenarios.