ORIGINAL ARTICLE
Differential Improvements in Lipid Profiles and Framingham
Recurrent Risk Score in Patients With and Without Diabetes
Mellitus Undergoing Long-Term Cardiac Rehabilitation
Sean Carroll, PhD, Costas Tsakirides, MSc, James Hobkirk, BSc, James W.A. Moxon, MBChB,
James W.D. Moxon, MBBS, DipSportMed, Michael Dudfield, MSc, Lee Ingle, PhD
ABSTRACT. Carroll S, Tsakirides C, Hobkirk J, Moxon
JWA, Moxon JWD, Dudfield M, Ingle L. Differential improve-
ments in lipid profiles and Framingham recurrent risk score in
patients with and without diabetes mellitus undergoing long-
term cardiac rehabilitation. Arch Phys Med Rehabil 2011;92:
1382-7.
Objective: To determine whether lipid profiles and recurrent
coronary heart disease (CHD) risk could be modified in pa-
tients with and without diabetes mellitus undergoing long-term
cardiac rehabilitation (CR).
Design: Retrospective analysis of patient case records.
Setting: Community-based phase 4 CR program.
Participants: Patients without diabetes (n=154; 89% men;
mean SD age, 59.68.5y; body mass index [BMI],
27.03.5kg/m
2
) and patients with diabetes (n=20; 81% men;
mean age, 63.08.7y; BMI, 28.73.3kg/m
2
) who completed
15 months of CR.
Interventions: Exercise testing and training, risk profiling,
and risk-factor education.
Main Outcome Measures: Cardiometabolic risk factors and 2-
to 4-year Framingham recurrent CHD risk scores were
assessed.
Results: At follow up, a significant main effect for time was
evident for decreased body mass and waist circumference and
improved low-density lipoprotein cholesterol (LDL-C) level
and submaximal cardiorespiratory fitness (all P.05), showing
the benefits of CR in both groups. However, a significant
group-by-time interaction effect was evident for high-density
lipoprotein cholesterol (HDL-C) level and total cholesterol
(TC)/HDL-C ratio (both P.05). TC/HDL-C ratio improved
(5.01.5 to 4.41.3) in patients without diabetes, but showed
no improvement in patients with diabetes (4.81.6 v 4.91.6).
Conclusions: We showed that numerous anthropometric, sub-
maximal fitness, and cardiometabolic risk variables (especially
LDL-C level) improved significantly after long-term CR. How-
ever, some aspects of cardiometabolic risk (measures incorpo-
rating TC and HDL-C) improved significantly in only the
nondiabetic group.
Key Words: Cardiac rehabilitation; Cardiometabolic risk;
Cardiorespiratory fitness; Exercise training; High-density lipo-
protein cholesterol; Low-density lipoprotein cholesterol; Reha-
bilitation; Type 2 diabetes.
© 2011 by the American Congress of Rehabilitation
Medicine
S
EVERAL RECENT REPORTS from contemporary large
international databases, such as the REeduction of Athero-
thrombosis for Continued Health Registry, showed that stable
outpatients with coronary heart disease (CHD), especially
those with concomitant diabetes, experience high rates of sub-
sequent CHD events despite the use of various standard med-
ications and medical treatments.
1
International survey data also
showed substantial residual cardiometabolic risk in patients
with CHD, especially obesity, dyslipidemia, increased blood
pressure, and impaired glucose tolerance. These are highly
prevalent, largely undertreated, and undercontrolled.
2-4
The need for intensive, longitudinal, multimodal optimal
medical therapy in high-risk CHD groups
5
has been reiterated
recently.
6-10
Several studies
11-16
reporting somewhat conflict-
ing results compared the effects of cardiac rehabilitation (CR)
between patients with and without diabetes. Moreover, long-
term lifestyle–induced improvements in cardiometabolic risk
factors in patients with type 2 diabetes without CHD also were
inconsistent.
17,18
Therefore, the aim of our study was to eval-
uate the impact of a 15-month comprehensive outpatient CR
program on cardiometabolic and Framingham recurrent risk
profiles in cardiac patients with and without diabetes mellitus.
From the Leeds Metropolitan University, Leeds, United Kingdom.
No commercial party having a direct financial interest in the results of the research
supporting this article has or will confer a benefit on the authors or on any organi-
zation with which the authors are associated.
Correspondence to Lee Ingle, PhD, Carnegie Research Institute, 209 Fairfax Hall,
Leeds Metropolitan University, Beckett Park, Headingley, Leeds LS6 3QS, UK,
e-mail: l.ingle@leedsmet.ac.uk. Reprints are not available from the author.
0003-9993/11/9209-00039$36.00/0
doi:10.1016/j.apmr.2011.04.013
List of Abbreviations
4S Scandinavian Simvastatin Survival Study
BMI body mass index
CHD coronary heart disease
CR cardiac rehabilitation
CRF cardiorespiratory fitness
DANSUK DANish StUdy of impaired glucose
metabolism in the settings of cardiac
rehabilitation
ECG electrocardiogram
ETT exercise tolerance test
EUROASPIRE European Action on Secondary
Prevention through Intervention to
Reduce Events
FRS Framingham risk score
HDL-C high-density lipoprotein cholesterol
LDL-C low-density lipoprotein cholesterol
RPE rating of perceived exertion
SCRIP Stanford Coronary Risk Intervention
Project
TC total cholesterol
1382
Arch Phys Med Rehabil Vol 92, September 2011