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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Scott, Christopher B. Leighton, Brian H. Ahearn, Kelly J. McManus, James J. |
| Description | Country affiliation: United States Author Affiliation: Scott CB ( Environmental Science, Health and Policy, University of Southern Maine, Gorham, Maine, USA. cscott@usm.maine.edu) |
| Abstract | We use a new approach to the estimation of energy expenditure for resistance training involving nonsteady state measures of work (weight × displacement), exercise O2 uptake, blood lactate, and recovery O2 uptake; all lifts were performed to muscular failure. Our intent was to estimate and compare absolute and relative aerobic and anaerobic exercise energy expenditure and recovery energy expenditure. Single-set bench press lifts of â¼ 37, â¼ 46, and â¼ 56% (muscular endurance-type exercise) along with 70, 80, and 90% (strength-type exercise) of a 1 repetition maximum were performed. Collectively, the muscular endurance lifts resulted in larger total energy expenditure (60.2 ± 14.5 kJ) as compared with the strength lifts (43.2 ± 12.5 kJ) (p = 0.001). Overall work also was greater for muscular endurance (462 ± 131 J) as opposed to strength (253 ± 93 J) (p = 0.001); overall work and energy expenditure were related (r = 0.87, p = 0.001). Anaerobic exercise and recovery energy expenditure were significantly larger for all strength lifts as compared with aerobic exercise energy expenditure (p < 0.001). For the muscular endurance lifts, anaerobic energy expenditure was larger than recovery energy expenditure (p < 0.001) that in turn was larger than aerobic exercise energy expenditure (p < 0.001). We conclude that for a single set of resistance training to fatigue, the anaerobic and recovery energy expenditure contributions can be significantly larger than aerobic energy expenditure during the exercise. To our surprise, recovery energy expenditure was similar both within strength and muscular-endurance protocols and between protocols; moreover, recovery energy expenditure had little to no relationship with aerobic and anaerobic exercise energy expenditure or work. |
| File Format | HTM / HTML |
| ISSN | 10648011 |
| Issue Number | 4 |
| Volume Number | 25 |
| e-ISSN | 15334287 |
| Journal | Journal of Strength and Conditioning Research |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2011-04-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Sport Sciences Energy Metabolism Physiology Exercise Muscle Fatigue Muscle Strength Muscle, Skeletal Oxygen Consumption Physical Endurance Weight Lifting Adult Humans Lactic Acid Blood Male Young Adult Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science |
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