Characteristics of a National Level Female Weightlifter Peaking for Competition: A Case Study
This study investigated physiological and performance changes of a national-level 69 kg female weightlifter after 3 competition phases over a 28-week training period. The athlete first trained for a regional championship (weeks 1–12), followed by a local competition (weeks 13–23) and the national championship (weeks 24–28). Body mass, vastus lateralis cross-sectional area (CSA), and unloaded and loaded squat jump performance were assessed weekly during each 4-week competition phase. Serum biomarkers and dynamic midthigh pulls were assessed before and after each competition phase. Weightlifting performance goals were met for the regional championship (total = 200 kg) and the local competition (total = 193 kg), but not the national championship (total = 196 kg). She lost more body mass in preparation for Nationals (−6.0 kg) compared with regionals (−2.5 kg) and the local competition (+2.2 kg). Vastus lateralis CSA very likely decreased after Nationals (precision = 99%, effect size = 2.08). Her testosterone:cortisol ratio likely increased (88%, 2.64), whereas interleukin-6 (79%, 2.47) and tumor necrosis factor–alpha (81%, 3.59) likely decreased after Nationals. Serum myostatin (99%, 1.95) and decorin (99%, 1.96) very likely decreased after the local competition. Unloaded squat jump height likely increased the week of regionals (89%, 0.95) and the local competition (99%, 1.83), whereas unloaded and loaded squat jump height possibly (69%, 0.99) ...
Publication date: Available online 3 June 2020Source: The Journal of Molecular DiagnosticsAuthor(s): Anthony N. Sireci, Jay L. Patel, Loren Joseph, Matthew C. Hiemenz, Oana C. Rosca, Samuel K. Caughron, Sarah A. Thibault-Sennett, Tara L. Burke, Dara L. Aisner
Publication date: Available online 2 June 2020Source: Pathology - Research and PracticeAuthor(s): Theodore Vougiouklakis, Brendan J. Belovarac, Andrew Lytle, Luis Chiriboga, Ugur Ozerdem
Publication date: Available online 2 June 2020Source: Pathology - Research and PracticeAuthor(s): Hyeongjoo Kim, Taewan Kim, Gunn Jaygal, Jongsoo Woo, Chang-Jin Kim, Moo-Jun Baek, Dongjun Jeong
Publication date: Available online 2 June 2020Source: Pathology - Research and PracticeAuthor(s): Qian Wu, Weiya Wang, Ping Zhou, Yiyun Fu, Ying Zhang, Yang W. Shao, Lili Jiang
Publication date: Available online 2 June 2020Source: The Journal of Foot and Ankle SurgeryAuthor(s): Sergio Agudiez Calvo, Jorge Ballesteros de Frutos, Héctor Raúl Cabezas García, Daniel Pecos Martin, Tomás Gallego Izquierdo
Publication date: Available online 2 June 2020Source: Orthopaedics &Traumatology: Surgery &ResearchAuthor(s): Alexandre Hardy, Guillaume Lefebvre
Publication date: Available online 2 June 2020Source: Journal of Orthopaedic TranslationAuthor(s): Zihao He, Linyang Chu, Xuqiang Liu, Xuequan Han, Kai Zhang, Mengning Yan, Xiaofeng Li, Zhifeng Yu
Publication date: Available online 3 June 2020Source: Journal of Clinical Orthopaedics and TraumaAuthor(s): Alaa A. Dawood
This study aims to assess whether older adults with low muscle mass or strength, in the presence of obesity, have an increased risk of knee (TKR) and hip replacement (THR) over 13 years. 1082 community-dwelling older adults (51% women; mean age 62.9 ± 7.5 years) were studied at baseline and multiple time points over 13 years. The incidence of TKR and THR was determined by data linkage to National Joint Replacement Registry. Appendicular lean and fat mass were measure d using DXA. Lower-limb muscle strength (LMS) was assessed by dynamometer. Low muscle mass and strength were defined as t...
Publication date: Available online 2 June 2020Source: Journal of OptometryAuthor(s): Tahereh Rakhshandadi, Mohamad-Reza Sedaghat, Farshad Askarizadeh, Hamed Momeni-Moghaddam, Mehdi Khabazkhoob, Abbasali Yekta, Foroozan Narooie-Noori