נק' מוניטין:
58,704
Strength Fitness and Body Weight Status on Markers of Cardiometabolic Health.
AuthorsRoberts CK, et al. Show all Journal
Med Sci Sports Exerc. 2014 Sep 23. [Epub ahead of print]
Affiliation
Abstract
INTRODUCTION: Recent evidence suggests that resistance training (RT) may reduce metabolic and cardiovascular disease risk. We investigated whether overweight/class I obese individuals by BMI classification with high strength fitness exhibit cardiovascular/metabolic phenotypes similar to those overweight/obese and untrained or those normal-weight with high strength fitness.
METHODS: 90 young males were categorized into 3 groups: overweight untrained (OU, n=30, BMI>27 kg/m), overweight trained (OT, n=30, BMI>27kg/m, RT≥4 d/wk) and normal-weight trained (NT, n=30, BMI<25kg/m, RT≥4 d/wk). Participants were assessed for strength, body composition, central/peripheral blood pressures, arterial stiffness, and markers of cardiovascular and metabolic health.
RESULTS: Body weight was similar in OT and OU and greater than NT (P<0.00001), and fat mass was different in all groups (P<0.001). Compared to OU, NT and OT groups exhibited higher relative strength (NT:46.7%;OT:44.4%,P<0.00001) and subendocardial viability ratio (NT:21.0%,P<0.001;OT:17.0%,P<0.01) and lower brachial/central blood pressures (NT:P<0.001;OT:P≤0.05); augmentation index and pulse-wave velocity were lower in only OT (P<0.05). Total-cholesterol, low-density lipoprotein (NT:P<0.01,OT:P<0.05), triglycerides (NT:-50.4%,OT:-41.8%;P<0.001), oxidized LDL (NT:-39.8%,OT:-31.8%;P<0.001) and CRP (NT:-63.7%,OT:-67.4%;P<0.01) levels were lower and high-density lipoprotein (NT:26.9%,OT:21.4%;P<0.001) higher in NT and OT compared to OU. NT and OT also exhibited lower amylin (NT:-55.8%,OT:-40.8%) and leptin (NT:-84.6%,OT:-59.4%) and higher adiponectin (NT:87.5%;P<0.001;OT:78.1%;P<0.01) and sex-hormone binding globulin (NT:124.4%,OT:92.3%;P<0.001). Despite greater total and trunk fat in OT compared with NT, other than glucose and insulin, which were lower in NT than both OT and OU (OT:P<0.01,OU:P<0.001), OT did not exhibit any impaired biomarker/phenotype compared to NT.
CONCLUSION: These findings provide evidence that overweight/class I obese individuals with high strength fitness exhibit metabolic/cardiovascular risk profiles similar to normal-weight, fit rather than overweight/class I obese unfit individuals. Strength training may be important to metabolic and cardiovascular health.
AuthorsRoberts CK, et al. Show all Journal
Med Sci Sports Exerc. 2014 Sep 23. [Epub ahead of print]
Affiliation
Abstract
INTRODUCTION: Recent evidence suggests that resistance training (RT) may reduce metabolic and cardiovascular disease risk. We investigated whether overweight/class I obese individuals by BMI classification with high strength fitness exhibit cardiovascular/metabolic phenotypes similar to those overweight/obese and untrained or those normal-weight with high strength fitness.
METHODS: 90 young males were categorized into 3 groups: overweight untrained (OU, n=30, BMI>27 kg/m), overweight trained (OT, n=30, BMI>27kg/m, RT≥4 d/wk) and normal-weight trained (NT, n=30, BMI<25kg/m, RT≥4 d/wk). Participants were assessed for strength, body composition, central/peripheral blood pressures, arterial stiffness, and markers of cardiovascular and metabolic health.
RESULTS: Body weight was similar in OT and OU and greater than NT (P<0.00001), and fat mass was different in all groups (P<0.001). Compared to OU, NT and OT groups exhibited higher relative strength (NT:46.7%;OT:44.4%,P<0.00001) and subendocardial viability ratio (NT:21.0%,P<0.001;OT:17.0%,P<0.01) and lower brachial/central blood pressures (NT:P<0.001;OT:P≤0.05); augmentation index and pulse-wave velocity were lower in only OT (P<0.05). Total-cholesterol, low-density lipoprotein (NT:P<0.01,OT:P<0.05), triglycerides (NT:-50.4%,OT:-41.8%;P<0.001), oxidized LDL (NT:-39.8%,OT:-31.8%;P<0.001) and CRP (NT:-63.7%,OT:-67.4%;P<0.01) levels were lower and high-density lipoprotein (NT:26.9%,OT:21.4%;P<0.001) higher in NT and OT compared to OU. NT and OT also exhibited lower amylin (NT:-55.8%,OT:-40.8%) and leptin (NT:-84.6%,OT:-59.4%) and higher adiponectin (NT:87.5%;P<0.001;OT:78.1%;P<0.01) and sex-hormone binding globulin (NT:124.4%,OT:92.3%;P<0.001). Despite greater total and trunk fat in OT compared with NT, other than glucose and insulin, which were lower in NT than both OT and OU (OT:P<0.01,OU:P<0.001), OT did not exhibit any impaired biomarker/phenotype compared to NT.
CONCLUSION: These findings provide evidence that overweight/class I obese individuals with high strength fitness exhibit metabolic/cardiovascular risk profiles similar to normal-weight, fit rather than overweight/class I obese unfit individuals. Strength training may be important to metabolic and cardiovascular health.
