What is the clinical evidence from this study?

Study design: Observational. Population: Healthy (n=816). Intervention: Health and fitness counseling. Primary outcome: Peak oxygen consumption, ventilatory threshold, HRmax, and peak oxygen pulse.

What question did this study set out to answer?

To investigate the impact of age on cardiorespiratory fitness during graded exercise and the effects of health counseling.

January 13, 2010Medicine & Science in Sports & Exercise

Effects of Age and Counseling on the Cardiorespiratory Response to Graded Exercise

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Key result

Age was associated with a significant decline in peak oxygen consumption (0.03 and 0.04 L/min/yr in cross-sectional and longitudinal analyses), related to declines in HRmax and peak oxygen pulse.

Why the study?

Does health and fitness counseling improve cardiorespiratory fitness in healthy males over time?

Population

816 healthy males, 30-69 years of age (subset of 87 for longitudinal follow-up)

Design

Cohort

Follow-up

mean 7.3 years

Authors

MNMichael D. NelsonThe University of Texas at Arlington SPStewart R. PetersenUniversity of Alberta RDRonald A. DlinCommunity Link

Discussion

Member takes

Implication

Age-related peak oxygen consumption decline warrants no practice change; leaves open counseling effects on longitudinal fitness.

Key Points

To investigate the impact of age on cardiorespiratory fitness during graded exercise and the effects of health counseling.
816 healthy males aged 30-69 performed incremental exercise tests to exhaustion.
Measured peak oxygen consumption, HRmax, and ventilatory threshold over time.
A subset of 87 subjects received health counseling with follow-up assessments.
Peak oxygen consumption declined with age at rates of 0.03-0.04 L x min(-1) x yr(-1).
HRmax decreased by 0.97-0.81 beats per year.
Ventilatory threshold declined but did not show significant change from initial to follow-up visits.

Study Design

Type

Observational (n=816)

Structured PICO

Does health and fitness counseling improve cardiorespiratory fitness in healthy males over time?

Population

816 healthy males, 30-69 years of age (subset of 87 for longitudinal follow-up)

Intervention

Health and fitness counseling

Outcome

Peak oxygen consumption, ventilatory threshold, HRmax, and peak oxygen pulsesurrogate

Cardiorespiratory fitness, including peak oxygen consumption and HRmax, declines significantly with age in healthy males, though the specific impact of fitness counseling remains unclear.

Limitations

It remains unclear if the lack of difference in ventilatory threshold and peak oxygen pulse between initial and follow-up visits can be attributed to the intervention used.
Unclear if findings can be attributed to the intervention used

Cite This Study

Nelson et al. (2010) conducted an observational in Healthy (n=816). Health and fitness counseling was evaluated on Peak oxygen consumption, ventilatory threshold, HRmax, and peak oxygen pulse. Age was associated with a significant decline in peak oxygen consumption (0.03 and 0.04 L/min/yr in cross-sectional and longitudinal analyses), related to declines in HRmax and peak oxygen pulse.

synapsesocial.com/papers/6a07b5bd7ba19a189e06b2c4 https://doi.org/10.1249/mss.0b013e3181b0e534

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Effects of Age and Counseling on the Cardiorespiratory Response to Graded Exercise

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Limitations

Cite This Study

Effects of Age and Counseling on the Cardiorespiratory Response to Graded Exercise

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Limitations

Cite This Study

Also Consider

Also Consider