January 12, 2017PLoS ONEOpen Access

Higher cardiorespiratory fitness in women did not attenuate hemodynamic responses to psychological stress, but rather resulted in significantly greater heart rate, pulse interval, and left ventricular ejection time responses compared to lower fit women.

Q: What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: Healthy (n=34). Intervention: Higher cardiorespiratory fitness vs. Lower cardiorespiratory fitness. Primary outcome: Hemodynamic responses to psychological stress (HR, PI, LVET) (p=<0.001).

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Why the study?

Does higher cardiorespiratory fitness attenuate hemodynamic responses to acute psychological stress in healthy women aged 30-50 years?

Population

34 healthy women aged 30-50 years with no history of metabolic disease, recruited from the Melbourne…

Comparison

Higher cardiorespiratory fitness subjected to a… vs Lower cardiorespiratory fitness subjected to a…

Design

Cross-sectional

Follow-up

Acute (1400h-1700h during and after stress test)

Key result

Higher cardiorespiratory fitness in women did not attenuate hemodynamic responses to psychological stress, but rather resulted in significantly greater heart rate, pulse interval, and left ventricular ejection time responses compared to lower fit women.

Authors

SJSisitha Jayasinghe STSusan J. Torres MHMuhammad Mohsen Hussein

Discussion

Member takes

Overview

Higher fitness may not blunt—and could heighten—hemodynamic stress responses in women; hypothesis-generating for exercise effects on reactivity.

Study Design

Type

Cross-Sectional (n=34)

Multicenter

Structured PICO

Does higher cardiorespiratory fitness attenuate hemodynamic responses to acute psychological stress in healthy women aged 30-50 years?

Population

34 healthy women aged 30-50 years, evaluated during the mid-follicular phase of their menstrual cycle, were stratified by cardiorespiratory fitness to assess hemodynamic responses to acute psychological stress.

Exposure

Higher cardiorespiratory fitness (allocated via median split of VO2max, n=17) subjected to a Trier Social Stress Test (TSST)

Comparator

Lower cardiorespiratory fitness (allocated via median split of VO2max, n=17) subjected to a Trier Social Stress Test (TSST)

Outcome

Hemodynamic responses to acute psychological stress (TSST), measured continuously via beat-to-beat systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (CO), left ventricular ejection time (LVET), maximum slope, pulse interval (PI), and total peripheral resistance (TPR)surrogate

Main Result

p-value: p=<0.001

Higher cardiorespiratory fitness in women does not attenuate cardiovascular responsivity to psychological stress, and may actually be associated with larger heart rate responses compared to lower fit women.

Limitations

Small sample size
Modified TSST may have maximally activated the cardiovascular system, masking subtle differences
Exercise dependence was not measured or controlled for

Cite This Study

Jayasinghe et al. (2017) conducted a cross-sectional in Healthy (n=34). Higher cardiorespiratory fitness vs. Lower cardiorespiratory fitness was evaluated on Hemodynamic responses to psychological stress (HR, PI, LVET) (p=<0.001). Higher cardiorespiratory fitness in women did not attenuate hemodynamic responses to psychological stress, but rather resulted in significantly greater heart rate, pulse interval, and left ventricular ejection time responses compared to lower fit women.

synapsesocial.com/papers/6a7ca6c3263fc0f117fab565 https://doi.org/10.1371/journal.pone.0169746

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January 12, 2017PLoS ONEOpen Access

Higher cardiorespiratory fitness in women did not attenuate hemodynamic responses to psychological stress, but rather resulted in significantly greater heart rate, pulse interval, and left ventricular ejection time responses compared to lower fit women.

View Full Paper

Ask AI

Bookmark

Why the study?

Does higher cardiorespiratory fitness attenuate hemodynamic responses to acute psychological stress in healthy women aged 30-50 years?

Population

34 healthy women aged 30-50 years with no history of metabolic disease, recruited from the Melbourne…

Comparison

Higher cardiorespiratory fitness subjected to a… vs Lower cardiorespiratory fitness subjected to a…

Design

Cross-sectional

Follow-up

Acute (1400h-1700h during and after stress test)

Key result

Authors

SJSisitha Jayasinghe STSusan J. Torres MHMuhammad Mohsen Hussein

Discussion

Member takes

Overview

Higher fitness may not blunt—and could heighten—hemodynamic stress responses in women; hypothesis-generating for exercise effects on reactivity.

Study Design

Type

Cross-Sectional (n=34)

Multicenter

Structured PICO

Does higher cardiorespiratory fitness attenuate hemodynamic responses to acute psychological stress in healthy women aged 30-50 years?

Population

Exposure

Higher cardiorespiratory fitness (allocated via median split of VO2max, n=17) subjected to a Trier Social Stress Test (TSST)

Comparator

Lower cardiorespiratory fitness (allocated via median split of VO2max, n=17) subjected to a Trier Social Stress Test (TSST)

Outcome

Main Result

p-value: p=<0.001

Limitations

Small sample size
Modified TSST may have maximally activated the cardiovascular system, masking subtle differences
Exercise dependence was not measured or controlled for

Cite This Study

synapsesocial.com/papers/6a7ca6c3263fc0f117fab565 https://doi.org/10.1371/journal.pone.0169746

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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