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Resistance exercise training improves vascular and autonomic function in individuals with chronic anxiety and high sleep irregularity

A retrospective analysis of 20 young adults with chronic anxiety who completed 10 weeks of resistance exercise training found that those with high total sleep time irregularity (≥67.67 minutes) showed significant improvements in flow-mediated dilation (p < 0.01) and cardiovagal baroreflex sensitivity (p = 0.04), while those with low irregularity showed no significant changes. This suggests resistance exercise training may be particularly effective for higher-risk anxiety phenotypes with sleep irregularity.

Last updated: Jul 25, 2026•0 RCTs•📖 Read as article →

Evidence Score

Evidence Score34/100
Human RCT☆☆☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Cardiovascular Responses to Resistance Exercise Training in Individuals with Chronic Anxiety and Sleep Duration Irregularity.

observational

Buck EA, Richardson JW, Weggen JB, Bakken BT, Fitzpatrick BJ, Campbell RG, Garten RS · American journal of physiology. Regulatory, integrative and comparative physiology (2026)

Participants: N/A
Duration: 10 weeks
Intervention: 10 weeks of resistance exercise training (RET)
Outcome: Macrovascular function (exercise-induced flow-mediated dilation, FMD) and cardiovagal baroreflex sensitivity (cBRS)
Effect Size: N/A (specific effect sizes not reported in abstract)
Population: Young adults (mean age 25±4 years) with chronic anxiety (clinical diagnosis of GAD or symptoms consistent with GAD), stratified by total sleep time irregularity (High TSTI ≥67.67 minutes, Low TSTI <67.67 minutes)

Result:

PubMed: 42485071DOI: 10.1152/ajpregu.00169.2026

Mechanism Graph

Resistance exercise training reduces sympathetic overactivity
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Improves endothelial function and nitric oxide bioavailability
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Enhances baroreflex sensitivity and autonomic balance
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Result: Improved vascular function and blood pressure control in high-risk individuals

Limitations

  • ⚠Retrospective analysis, not a prospective randomized controlled trial
  • ⚠Small sample size (n=20) limits generalizability
  • ⚠No control group without exercise training

Frequently Asked Questions

What is total sleep time irregularity (TSTI)?▼

Total sleep time irregularity is a measure of variability in sleep duration, with a cutoff of ≥67.67 minutes used in this study to define high irregularity, indicating impaired vascular and autonomic function.

Did resistance exercise training help all participants with chronic anxiety?▼

No, only those with high sleep irregularity (≥67.67 minutes TSTI) showed significant improvements in vascular and autonomic function; the low irregularity group showed no significant changes.

What were the primary outcomes measured in this study?▼

The primary outcomes were macrovascular function measured by exercise-induced flow-mediated dilation (FMD) and cardiovagal baroreflex sensitivity (cBRS).

Is this study a randomized controlled trial?▼

No, it is a retrospective analysis of 20 young adults who completed 10 weeks of resistance exercise training, without a control group or randomization.

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References

  1. 1.Buck EA, Richardson JW, Weggen JB, Bakken BT, Fitzpatrick BJ, Campbell RG, Garten RS. "Cardiovascular Responses to Resistance Exercise Training in Individuals with Chronic Anxiety and Sleep Duration Irregularity.." American journal of physiology. Regulatory, integrative and comparative physiology, 2026. PMID: 42485071 DOI: 10.1152/ajpregu.00169.2026
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.