Low skeletal muscle mass is associated with low aerobic capacity and increased mortality risk in patients with coronary heart disease – a CARE CR study

NICHOLS, Simon, O'DOHERTY, Alasdair F., TAYLOR, Claire, CLARK, Andrew L., CARROLL, Sean and INGLE, Lee (2019). Low skeletal muscle mass is associated with low aerobic capacity and increased mortality risk in patients with coronary heart disease – a CARE CR study. Clinical Physiology And Functional Imaging, 39 (1), 93-102.

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Link to published version:: https://doi.org/10.1111/cpf.12539
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    Background In patients with chronic heart failure, there is a positive linear relationship between skeletal muscle mass (SMM) and peak oxygen consumption (urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0001O2peak); an independent predictor of all‐cause mortality. We investigated the association between SMM and urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0002O2peak in patients with coronary heart disease (CHD) without a diagnosis of heart failure. Methods Male patients with CHD underwent maximal cardiopulmonary exercise testing and dual X‐ray absorptiometry assessment. urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0003O2peak, the ventilatory anaerobic threshold and peak oxygen pulse were calculated. SMM was expressed as appendicular lean mass (lean mass in both arms and legs) and reported as skeletal muscle index (SMI; kg m−2), and as a proportion of total body mass (appendicular skeletal mass [ASM%]). Low SMM was defined as a SMI <7·26 kg m−2, or ASM% <25·72%. Five‐year all‐cause mortality risk was calculated using the Calibre 5‐year all‐cause mortality risk score. Results Sixty patients were assessed. Thirteen (21·7%) had low SMM. SMI and ASM% correlated positively with urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0004O2peak (r = 0·431 and 0·473, respectively; P<0·001 for both). SMI and ASM% predicted 16·3% and 12·9% of the variance in urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0005O2peak, respectively. SMI correlated most closely with peak oxygen pulse (r = 0·58; P<0·001). SMI predicted 40·3% of peak urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0006O2/HR variance. ASM% was inversely associated with 5‐year all‐cause mortality risk (r = −0·365; P = 0·006). Conclusion Skeletal muscle mass was positively correlated with urn:x-wiley:14750961:media:cpf12539:cpf12539-math-0007O2peak in patients with CHD. Peak oxygen pulse had the strongest association with SMM. Low ASM% was associated with a higher risk of all‐cause mortality. The effects of exercise and nutritional strategies aimed at improving SMM and function in CHD patients should be investigated.

    Item Type: Article
    Uncontrolled Keywords: cardiorespiratory fitness, coronary disease, sarcopenia, skeletal muscle
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Centre for Sport and Exercise Science
    Departments - Does NOT include content added after October 2018: Health and Well-being > Department of Sport
    Identification Number: https://doi.org/10.1111/cpf.12539
    Page Range: 93-102
    Depositing User: Eddy Verbaan
    Date Deposited: 13 Sep 2018 10:23
    Last Modified: 18 Mar 2021 07:08
    URI: https://shura.shu.ac.uk/id/eprint/22396

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