Article
Robotics
Gwendolyn M. Bryan, Patrick W. Franks, Stefan C. Klein, Robert J. Peuchen, Steven H. Collins
Summary: Lower-limb exoskeletons have the potential to improve mobility for various groups, but commercial products are limited and research is constrained by hardware. New multi-joint assistance strategies have not been tested, prompting the design of a high-torque, high-power exoskeleton emulator to explore untested strategies.
INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH
(2021)
Article
Orthopedics
Payam Tarassoli, Jil A. Wood, Darren B. Chen, Will Griffiths-Jones, Johan Bellemans, Samuel J. MacDessi
Summary: This study compared the arithmetic HKA and stressed HKA measurements using radiographs and computer-assisted navigation, and found no significant difference between the two methods. These findings further support the use of the preoperative arithmetic method and the intraoperative stressed HKA technique in restoring constitutional lower limb alignment in KA TKA.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Sport Sciences
Tobias Siebert, Lars Donath, Mischa Borsdorf, Norman Stutzig
Summary: This study investigated the effects of static stretching, dynamic stretching, and myofascial foam rolling on hip flexion range of motion. The results showed significant increases in range of motion after static stretching and dynamic stretching, but not after foam rolling. Therefore, the increased range of motion observed with foam rolling may be due to a change in pain threshold.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2022)
Article
Orthopedics
Koji Iwasaki, Yasumitsu Ohkoshi, Yoshiaki Hosokawa, Shuya Chida, Kengo Ukishiro, Kensaku Kawakami, Sho'ji Suzuki, Tatsunori Maeda, Tomohiro Onodera, Eiji Kondo, Norimasa Iwasaki
Summary: This study aimed to assess the association between the pelvis-knee-ankle angle (PKA) and knee adduction moment (KAM) following high tibial osteotomy (HTO) and patient-reported outcomes. The results showed that PKA was significantly correlated with KAM peaks in patients with varus knee osteoarthritis after HTO, while hip-knee-ankle angle (HKA) did not show significant correlation.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2023)
Article
Multidisciplinary Sciences
Yoshitomo Saiki, Tamon Kabata, Tomohiro Ojima, Yoshitomo Kajino, Daisuke Inoue, Takaaki Ohmori, Junya Yoshitani, Takuro Ueno, Yuki Yamamuro, Atsushi Taninaka, Tomoyuki Kataoka, Naoyuki Kubo, Seigaku Hayashi, Hiroyuki Tsuchiya
Summary: The study aimed to evaluate the reliability and validity of OpenPose algorithm in measuring HKA angle in knee osteoarthritis patients. The results showed that OpenPose had excellent test-retest reliability and agreement with radiography, making it a reliable and valid tool for measuring HKA angle non-invasively.
SCIENTIFIC REPORTS
(2023)
Article
Sport Sciences
Joao B. Ferreira-Junior, Ricardo P. C. Benine, Suene F. N. Chaves, Diego A. Borba, Hugo C. Martins-Costa, Eduardo D. S. Freitas, Michael G. Bemben, Carlos A. Vieira, Martim Bottaro
Summary: This study evaluated the effects of dynamic and static stretching performed before resistance training on muscle adaptations in untrained young men. The results showed that 80 seconds of either static or dynamic stretching did not induce any additional muscular adaptations to resistance training in untrained young men.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2021)
Article
Engineering, Biomedical
Gwendolyn M. Bryan, Patrick W. Franks, Seungmoon Song, Alexandra S. Voloshina, Ricardo Reyes, Meghan P. O'Donovan, Karen N. Gregorczyk, Steven H. Collins
Summary: This study examined the relationship between walking speed, optimal hip-knee-ankle exoskeleton assistance, and metabolic energy cost. The results indicated that exoskeleton assistance is most effective at medium and fast walking speeds, but less effective for slow walking speeds.
JOURNAL OF NEUROENGINEERING AND REHABILITATION
(2021)
Article
Public, Environmental & Occupational Health
Changfeng Ning, Menglu Li, Linna Ge
Summary: To prevent sports injuries among students, it is necessary to study and develop a physical education Internet of Things data monitoring training system. This system utilizes sensors, smartphones, and cloud servers to collect and analyze data, generating personalized training programs and effectively preventing sports injuries. By analyzing students' sports and health data, this system provides comprehensive assessment and monitoring of students' sports status for teachers, while offering personalized and scientific training programs for students.
PREVENTIVE MEDICINE
(2023)
Article
Orthopedics
Naicheng Diao, Fei Yu, Bo Yang, Lifeng Ma, Heyong Yin, Ai Guo
Summary: This study investigated the relationship between changes in hip-knee-ankle (HKA) angle and hindfoot alignment after total knee arthroplasty (TKA) for varus knee osteoarthritis. The results showed that HFA was significantly adjusted by 3 months after TKA, and the change in HFA was weakly correlated with the change in HKA angle, with age impacting this correlation. In patients under 65 years old, there was a greater correlation between changes in HFA and HKA angle, while no correlation was observed in patients above 65 years old.
BMC MUSCULOSKELETAL DISORDERS
(2021)
Article
Orthopedics
Taghi Ramazanian, Shi Yan, Pouria Rouzrokh, Cody C. Wyles, Thomas J. O. Byrne, Michael J. Taunton, Hilal Maradit Kremers
Summary: This study compared HKA angle distribution in early and advanced knee osteoarthritis patients and found that patients undergoing total knee arthroplasty had a wider alignment distribution and more severe varus and valgus alignment. HKA angle was strongly associated with gender and body mass index.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Sport Sciences
Jeffrey B. Taylor, Elena S. Wright, Justin P. Waxman, Randy J. Schmitz, James D. Groves, Sandra J. Shultz
Summary: The study found that lower levels of both ankle dorsiflexion range of motion and underutilization of available motion are associated with biomechanics that increase the risk of injury.
SPORTS HEALTH-A MULTIDISCIPLINARY APPROACH
(2022)
Article
Green & Sustainable Science & Technology
Alfonso Penichet-Tomas, Basilio Pueo, Marta Abad-Lopez, Jose M. Jimenez-Olmedo
Summary: The study showed that both foam rolling and static stretching have a significant impact on improving the range of motion, with no significant difference between the two methods. Both interventions were found to be effective in increasing flexibility based on the pre-test and post-test results.
Article
Biotechnology & Applied Microbiology
Yousef Bader, David Langlois, Natalie Baddour, Edward D. Lemaire
Summary: A novel integrated hip-knee (IHK) unit was designed and evaluated to address the limitations of existing hip-knee-ankle-foot prostheses (HKAFs). The IHK combines powered hip and microprocessor-controlled knee joints into one structure, with shared electronics, sensors, and batteries. ISO-10328:2016 standard mechanical proof load testing demonstrated acceptable structural safety and rigidity. Successful functional testing involved three able-bodied participants walking with the IHK in a hip prosthesis simulator, showing different walking strategies. Future development should include completion of a synergistic gait control system, improved battery-holding mechanism, and amputee user testing.
BIOENGINEERING-BASEL
(2023)
Article
Engineering, Biomedical
Gwendolyn M. Bryan, Patrick W. Franks, Seungmoon Song, Ricardo Reyes, Meghan P. O'Donovan, Karen N. Gregorczyk, Steven H. Collins
Summary: Whole-leg exoskeleton assistance can reduce the metabolic cost of walking while carrying various loads. Consistent optimized timing parameters across participants and load conditions suggest sensitivity of metabolic cost reductions to torque timing, while varied torque magnitude parameters may imply customization based on individuals. Future work should explore whether applying the load to the exoskeleton instead of the person's torso yields greater benefits.
JOURNAL OF NEUROENGINEERING AND REHABILITATION
(2021)
Article
Multidisciplinary Sciences
Filipe Rosa, Hugo Sarmento, Joao Pedro Duarte, Joel Barrera, Francisco Loureiro, Vasco Vaz, Nestor Saavedra, Antonio Jose Figueiredo
Summary: The purpose of this study was to evaluate the strength of the knee flexors and extensors and hip abductor and adductor muscles in young soccer players. The results showed significant differences in peak torques between dominant and non-dominant members for knee flexion and extension in concentric and eccentric muscular actions. No significant differences were found in the traditional and functional ratios between dominant and non-dominant members. There were also no significant differences in strength between hip adductors and abductors. The reference values and ratios can be used as a guideline for classifying players and assessing their recovery after injury.