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Winwood PW, Keogh JWL, Travis SK, Pritchard HJ. The Tapering Practices of Competitive Weightlifters. J Strength Cond Res 2023; 37:829-839. [PMID: 35976755 DOI: 10.1519/jsc.0000000000004324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Winwood, PW, Keogh, JW, Travis, SK, and Pritchard, HJ. The tapering practices of competitive weightlifters. J Strength Cond Res 37(4): 829-839, 2023-This study explored the tapering strategies of weightlifting athletes. Weightlifting athletes ( n = 146) (mean ± SD ; age: 29.2 ± 8.7 years, height: 172.5 ± 10.1 cm, body mass: 84.0 ± 17.2 kg, 4.7 ± 3.4 years of weightlifting training experience, and 3.9 ± 3.3 years of competitive weightlifting experience) completed a self-reported 4-page, 39-item internet survey on tapering practices. Subgroup analysis by sex (male and female) and competitive standard (local or regional, national and international level) was conducted. Ninety-nine percent ( n = 144) of weightlifting athletes reported they used a taper. Athletes stated that their typical taper length was 8.0 ± 4.4 days, with the linear (36%) and step tapers (33%) being the most performed. Training volume decreased during the taper by 43.1 ± 14.6%, and athletes ceased all training 1.5 ± 0.6 days out from competition. Muscular strength, light technique work, and aerobic conditioning were the most common types of training performed in the taper. Athletes typically stated that tapering was performed to achieve rest and recovery, physical preparation for peak performance and mental preparation; training intensity and training duration decreased whereas training frequency remained the same or decreased; traditional exercises were performed further out from competition than weightlifting exercises; assistance exercises and some strength work were reduced; nutritional changes, foam rolling, static stretching, and massage were strategies used in the taper; and poor tapering occurred because of training too heavy, too hard, or too light and life-work circumstances. These results may aid athletes and coaches in strength sports to optimize tapering variables leading to improved performances.
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Affiliation(s)
- Paul W Winwood
- Department of Sport and Recreation, Toi Ohomai Institute of Technology, Tauranga, New Zealand
- Department of Sport and Recreation, Sports Performance Research Institute New Zealand, Auckland University of Technology, New Zealand
| | - Justin W L Keogh
- Department of Sport and Recreation, Sports Performance Research Institute New Zealand, Auckland University of Technology, New Zealand
- Faculty of Health Sciences and Medicine, Bond University, Queensland, Australia
- Cluster for Health Improvement, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Queensland, Australia
- Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - S Kyle Travis
- Department of Physical Therapy, Muscle Biology Laboratory, College of Public Health & Health Professions, University of Florida, Gainesville, Florida; and
| | - Hayden J Pritchard
- Department of Exercise and Wellness, Adjunct Academic Staff Member, Faculty of Health and Sciences, UCOL, Palmerston North, New Zealand
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Ang CL, Kong PW. Field-Based Biomechanical Assessment of the Snatch in Olympic Weightlifting Using Wearable In-Shoe Sensors and Videos-A Preliminary Report. SENSORS (BASEL, SWITZERLAND) 2023; 23:1171. [PMID: 36772210 PMCID: PMC9919757 DOI: 10.3390/s23031171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/06/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Traditionally, the biomechanical analysis of Olympic weightlifting movements required laboratory equipment such as force platforms and transducers, but such methods are difficult to implement in practice. This study developed a field-based method using wearable technology and videos for the biomechanical assessment of weightlifters. To demonstrate the practicality of our method, we collected kinetic and kinematic data on six Singapore National Olympic Weightlifters. The participants performed snatches at 80% to 90% of their competition one-repetition maximum, and the three best attempts were used for the analysis. They wore a pair of in-shoe force sensors loadsol® (novel, Munich, Germany) to measure the vertical ground reaction forces under each foot. Concurrently, a video camera recorded the barbell movement from the side. The kinematics (e.g., trajectories and velocities) of the barbell were extracted using a free video analysis software (Kinovea). The power-time history was calculated from the force and velocity data. The results showed differences in power, force, and barbell velocity with moderate to almost perfect reliability. Technical inconsistency in the barbell trajectories were also identified. In conclusion, this study presented a simple and practical approach to evaluating weightlifters using in-shoe wearable sensors and videos. Such information can be useful for monitoring progress, identifying errors, and guiding training plans for weightlifters.
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Harty PS, Friedl KE, Nindl BC, Harry JR, Vellers HL, Tinsley GM. Military Body Composition Standards and Physical Performance: Historical Perspectives and Future Directions. J Strength Cond Res 2022; 36:3551-3561. [PMID: 34593729 DOI: 10.1519/jsc.0000000000004142] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABSTRACT Harty, PS, Friedl, KE, Nindl, BC, Harry, JR, Vellers, HL, and Tinsley, GM. Military body composition standards and physical performance: historical perspectives and future directions. J Strength Cond Res 36(12): 3551-3561, 2022-US military physique and body composition standards have been formally used for more than 100 years. These metrics promote appropriate physical fitness, trim appearance, and long-term health habits in soldiers, although many specific aspects of these standards have evolved as evidence-based changes have emerged. Body composition variables have been shown to be related to many physical performance outcomes including aerobic capacity, muscular endurance, strength and power production, and specialized occupational tasks involving heavy lifting and load carriage. Although all these attributes are relevant, individuals seeking to improve military performance should consider emphasizing strength, hypertrophy, and power production as primary training goals, as these traits appear vital to success in the new Army Combat Fitness Test introduced in 2020. This fundamental change in physical training may require an adjustment in body composition standards and methods of measurement as physique changes in modern male and female soldiers. Current research in the field of digital anthropometry (i.e., 3-D body scanning) has the potential to dramatically improve performance prediction algorithms and potentially could be used to inform training interventions. Similarly, height-adjusted body composition metrics such as fat-free mass index might serve to identify normal weight personnel with inadequate muscle mass, allowing for effective targeted nutritional and training interventions. This review provides an overview of the origin and evolution of current US military body composition standards in relation to military physical readiness, summarizes current evidence relating body composition parameters to aspects of physical performance, and discusses issues relevant to the emerging modern male and female warrior.
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Affiliation(s)
- Patrick S Harty
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, Texas
| | - Karl E Friedl
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts; and
| | - Bradley C Nindl
- Department of Sports Medicine and Nutrition, Warrior Human Performance Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - John R Harry
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, Texas
| | - Heather L Vellers
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, Texas
| | - Grant M Tinsley
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, Texas
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Menargues-Ramírez R, Sospedra I, Holway F, Hurtado-Sánchez JA, Martínez-Sanz JM. Evaluation of Body Composition in CrossFit ® Athletes and the Relation with Their Results in Official Training. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11003. [PMID: 36078716 PMCID: PMC9518485 DOI: 10.3390/ijerph191711003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/31/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
CrossFit® is a high-intensity sport that combines weightlifting, gymnastic skills, and cardiovascular exercises. To find the anthropometric references that define the optimal body composition, it is essential to first find an optimal body composition for one's physical preparation. The objective of this study is to describe the anthropometric characteristics of 27 Spanish CrossFit® athletes, 19 males aged 39 years old (24-44) and 8 females aged 28 years old (23-40), and how these characteristics influenced their performance. The athletes performed the Fran, Cindy, and Kelly workouts, establishing minimum marks, and the CrossFit Total workout to assess maximum strength. Significant differences were not found in time and repetitions between sexes in skill training, although there was a positive correlation r = 0.876 (p < 0.001) between muscle mass and the Total CrossFit result. We can conclude that the CrossFit® athlete has a low amount of fat mass and a small relative size, which is an advantage when training with bodyweight exercises, and a high muscle mass that provide benefits when strength training. In addition, despite executing movements from a multitude of disciplines, the physical demands for lifting heavy loads resulted in the anthropometric values of athletes being more similar to elite weightlifting athletes than in other sports.
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Affiliation(s)
- Rubén Menargues-Ramírez
- Nursing Department, Faculty of Health Sciences, University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
| | - Isabel Sospedra
- Nursing Department, Faculty of Health Sciences, University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
- Research Group on Food and Nutrition (ALINUT), University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
| | - Francis Holway
- Faculty of Sport Science, Catholic University of Murcia (UCAM), Guadalupe de Maciascoque, 30107 Murcia, Spain
| | - José Antonio Hurtado-Sánchez
- Nursing Department, Faculty of Health Sciences, University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
| | - José Miguel Martínez-Sanz
- Nursing Department, Faculty of Health Sciences, University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
- Research Group on Food and Nutrition (ALINUT), University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
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Sánchez-Ferrer ML, De La Cruz-Sánchez E, Arense-Gonzalo JJ, Prieto-Sánchez MT, Bernabeu-González I, Carmona-Barnosi A, Mendiola J, Torres-Cantero AM. Body Composition and Characterization of Skinfold Thicknesses from Polycystic Ovary Syndrome Phenotypes. A Preliminar Case-Control Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:2977. [PMID: 33799425 PMCID: PMC8002058 DOI: 10.3390/ijerph18062977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022]
Abstract
To describe whether polycystic ovary syndrome (PCOS) phenotypes vary in their body composition and skinfold (SKF) thicknesses and if they differ from women without PCOS, a preiminar case-control study was performed. A total of 117 cases were diagnosed using the Rotterdam criteria. Gynecological examinations and transvaginal ultrasound were performed in all women (266 women). Anthropometric measurements including SKF thickness were taken according to the restricted profile protocol of the international standards for the anthropometric evaluation according to the International Society of the Advancement of Kinanthropometry (ISAK). Women with PCOS had higher body mass index and percentage of fat mass with respect to controls. The endomorphy component was also significantly higher in women with PCOS than in controls. Each PCOS phenotype displayed a different representation in the somatochart respect to the others phenotypes and also compared to controls. Women with PCOS had significantly higher ∑7 SKF (p = 0.013), ∑appendicular SKF (p = 0.017) and ∑arm SKF (p = 0.019) than controls. H-O-POM phenotype had higher 7∑ SKF (p = 0.003), ∑appendicular SKF (p = 0.01), ∑arm SKF (0.005), ∑leg SKF, and ∑trunk SKF (0.008) and also a higher fast mass percentage than controls (p = 0.011). In conclusion, body composition evaluated by ISAK protocol is different in women with PCOS, especially in the complete phenotype (H-O-POM). This could have relevant implications in terms of clinical evaluation and follow-up of these women, although more researches in this field are needed.
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Affiliation(s)
- María L. Sánchez-Ferrer
- Department of Obstetrics & Gynecology, “Virgen de la Arrixaca” University Clinical Hospital, 30120 El Palmar, Spain; (M.L.S.-F.); (M.T.P.-S.); (I.B.-G.); (A.C.-B.)
- Institute for Biomedical Research of Murcia, IMIB-Arrixaca, 30120 El Palmar, Spain;
| | - Ernesto De La Cruz-Sánchez
- Division of Preventive Medicine and Public Health, Department of Physical Activity, Faculty of Sport Sciences, University of Murcia, C/Santa Alicia, s/n, 30720 Santiago de la Ribera, Spain;
| | - Julián J. Arense-Gonzalo
- Institute for Biomedical Research of Murcia, IMIB-Arrixaca, 30120 El Palmar, Spain;
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, 30100 Espinardo, Spain;
| | - María T. Prieto-Sánchez
- Department of Obstetrics & Gynecology, “Virgen de la Arrixaca” University Clinical Hospital, 30120 El Palmar, Spain; (M.L.S.-F.); (M.T.P.-S.); (I.B.-G.); (A.C.-B.)
- Institute for Biomedical Research of Murcia, IMIB-Arrixaca, 30120 El Palmar, Spain;
| | - Itziar Bernabeu-González
- Department of Obstetrics & Gynecology, “Virgen de la Arrixaca” University Clinical Hospital, 30120 El Palmar, Spain; (M.L.S.-F.); (M.T.P.-S.); (I.B.-G.); (A.C.-B.)
| | - Ana Carmona-Barnosi
- Department of Obstetrics & Gynecology, “Virgen de la Arrixaca” University Clinical Hospital, 30120 El Palmar, Spain; (M.L.S.-F.); (M.T.P.-S.); (I.B.-G.); (A.C.-B.)
| | - Jaime Mendiola
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, 30100 Espinardo, Spain;
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Alberto M. Torres-Cantero
- Institute for Biomedical Research of Murcia, IMIB-Arrixaca, 30120 El Palmar, Spain;
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, 30100 Espinardo, Spain;
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Preventive Medicine, “Virgen de la Arrixaca” University Clinical Hospital, 30120 El Palmar, Spain
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