Premium
Combined strength and endurance training does not improve left ventricular systolic function in response to a high‐intensity exercise in females (881.7)
Author(s) -
Dumanoir Greg,
Haykowsky Mark,
Taylor Dylan,
Syrotuik Dan,
Bell Gordon
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.881.7
Subject(s) - endurance training , medicine , rowing , cardiology , contractility , vo2 max , intensity (physics) , strength training , diastole , physical therapy , blood pressure , heart rate , physics , archaeology , quantum mechanics , history
The acute effect of high‐intensity exercise combined with strength and endurance training on left ventricular (LV) systolic function in female rowers is not well known. The objective of this study was to evaluate the effects of 10‐weeks of endurance and strength training on maximal oxygen uptake (VO2max), endurance performance, strength, and LV morphology and systolic function in eight female rowers (mean age: 25 ± 9 years). LV systolic function was also assessed before and immediately after completing a high‐intensity endurance performance test (2000m of rowing). Ten‐weeks of combined strength and endurance training significantly improved VO2max (before vs. after; 2.7 ± 0.4 vs. 3.0 ± 0.3 L/min), endurance performance time (510 ± 41 vs. 491 ± 24 sec), leg press (163 ± 45 vs. 235 ± 86 kg) and bench press (40 ± 4 vs. 46 ± 5 kg) one repetition maximum strength. Combined training did not change end‐diastolic cavity area (19 ± 3 vs. 19 ± 4 cm2), end‐systolic cavity area (9 ± 2 vs. 8 ± 2 cm2), fractional area change (51 ± 6 vs. 55 ± 3%) or mass (160 ± 34 vs. 159 ± 17 g). High‐intensity exercise was associated with an increase in contractility and fractional area change from before to after training. In conclusion, 10 weeks of rowing and strength training in female rowers improves exercise capacity, endurance performance and muscle strength without altering LV morphology. In addition, combined strength and endurance training was not associated with an increase in LV systolic function but contractility and fractional area was significantly increased with high intensity exercise. Grant Funding Source : Supported by the Sport Science Association of Alberta