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Hackett DA, Mitchell L, Wilson GC, Valenzuela T, Hollings M, Fiatarone Singh M. A Case Study of an 87-Year-Old Male Bodybuilder with Complex Health Conditions. ACTA ACUST UNITED AC 2021; 57:medicina57070664. [PMID: 34203123 PMCID: PMC8306742 DOI: 10.3390/medicina57070664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/17/2021] [Accepted: 06/25/2021] [Indexed: 11/24/2022]
Abstract
This exploratory clinical case report presents an 87-year-old man who began bodybuilding at the age of 76 years and was officially recognised as the world’s oldest competitive bodybuilder, competing until age 83. He has a background of complex health conditions including polio, strokes, cardiac arrest, atrial fibrillation, prostate disease, osteoarthritis, depression, bowel obstruction, reflux, and bladder cancer. Assessments of body composition, bone density, muscle performance, and diet-related practices were performed. The bodybuilder had superior fat-free mass, lower fat mass, and generally greater muscle performance compared to untrained healthy males of a similar age. Commencement of bodybuilding in older age appears to be possible, even with ongoing complex health conditions, and the potential benefits of this practice require systematic investigation in the future.
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Affiliation(s)
- Daniel A. Hackett
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; (G.C.W.); (T.V.); (M.H.); (M.F.S.)
- Correspondence: ; Tel.: +61-2-9351-9294; Fax: +61-2-9351-9204
| | - Lachlan Mitchell
- National Nutrition Surveillance Centre, School of Public Health, Physiotherapy and Sport Science, University College Dublin, Belfield, Dublin 4, Ireland;
| | - Guy C. Wilson
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; (G.C.W.); (T.V.); (M.H.); (M.F.S.)
| | - Trinidad Valenzuela
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; (G.C.W.); (T.V.); (M.H.); (M.F.S.)
| | - Matthew Hollings
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; (G.C.W.); (T.V.); (M.H.); (M.F.S.)
| | - Maria Fiatarone Singh
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; (G.C.W.); (T.V.); (M.H.); (M.F.S.)
- The Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, MA 02131, USA
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Validity of Force-Velocity Profiling Assessed With a Pneumatic Leg Press Device. Int J Sports Physiol Perform 2021; 16:1777-1785. [PMID: 34044368 DOI: 10.1123/ijspp.2020-0954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/19/2021] [Accepted: 02/24/2021] [Indexed: 11/18/2022]
Abstract
PURPOSE The aim of this study was to examine the concurrent validity of force-velocity (FV) variables assessed across 5 Keiser leg press devices. METHODS A linear encoder and 2 independent force plates (MuscleLab devices) were mounted on each of the 5 leg press devices. A total of 997 leg press executions, covering a wide range of forces and velocities, were performed by 14 participants (29 [7] y, 181 [5] cm, 82 [8] kg) across the 5 devices. Average and peak force, velocity, and power values were collected simultaneously from the Keiser and MuscleLab devices for each repetition. Individual FV profiles were fitted to each participant from peak and average force and velocity measurements. Theoretical maximal force, velocity, and power were deduced from the FV relationship. RESULTS Average and peak force and velocity had a coefficient of variation of 1.5% to 8.6%, near-perfect correlations (.994-.999), and a systematic bias of 0.7% to 7.1% when compared with reference measurements. Average and peak power showed larger coefficient of variations (11.6% and 17.2%), despite excellent correlations (.977 and .952), and trivial to small biases (3.9% and 8.4%). Extrapolated FV variables showed near-perfect correlations (.983-.997) with trivial to small biases (1.4%-11.2%) and a coefficient of variation of 1.4% to 5.9%. CONCLUSIONS The Keiser leg press device can obtain valid measurements over a wide range of forces and velocities across different devices. To accurately measure power, theoretical maximal power calculated from the FV profile is recommended over average and peak power values from single repetitions, due to the lower random error observed for theoretical maximal power.
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