Colleague roles and innovation in scientific teams

Colleague role of scientists utilizing executive decision making mode

The influences of added mass on muscle activation and contractile mechanics during submaximal and maximal countermovement jumping in humans

This is the final version. Available from the Company of Biologists via the DOI in this recordMuscle contractile mechanics induced by the changing demands of human movement have the potential to influence our movement strategies. This study examined fascicle length changes of the triceps surae during jumping with added mass or increasing jump height to determine whether the chosen movement strategies were associated with relevant changes in muscle contractile properties. Sixteen participants jumped at sub-maximal and maximal intensities while total net work was matched via two distinct paradigms: (1) adding mass to the participant or (2) increasing jump height. Electromyography (EMG) and ultrasound analyses were performed to examine muscle activation, fascicle length and fascicle velocity changes of the triceps surae during jumping. Integrated EMG was significantly higher in the added mass paradigm with no difference in mean or maximal EMG, indicating that the muscle was activated for a significantly longer period of time but not activated to a greater intensity. Fascicle shortening velocity was slower with added mass compared than with increasing jump height; therefore, intrinsic force–velocity properties probably enabled increased force production. Improved fascicle contractile mechanics paired with a longer activation period probably produced a consistently larger fascicle force, enabling a greater impulse about the ankle joint. This may explain why previous research found that participants used an ankle-centred strategy for work production in the added mass paradigm and not in the jump height paradigm. The varied architecture of muscles within the lower limb may influence which muscles we choose to employ for work production under different task constraints.Australian Postgraduate Awar

Achilles tendon (3D): Do the mechanical properties of tendon change in response to exercise?

This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recor

Lower limb biomechanics and muscle function

This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recor

Effect of muscle force during stretch on eccentric contraction-induced muscle damage

This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recor

Cannabis Content in Athletic Training and Physical Therapy Curriculums in the United States

Background: Cannabis is the most commonly used illicit drug in the U.S. and its use is becoming more popular with the legalization of medical marijuana. Currently, 36/50 states and the District of Columbia have legalized marijuana for medical purposes. These changes have allowed for more cannabis-related research to be conducted. It is unknown how health professional education programs such as physical therapy and athletic training have integrated cannabis-related curriculum into their students’ training. This study aimed to identify how physical therapy and athletic training education programs are approaching teaching students about cannabis-related topics. Methods: There were 111 individuals from 40 states who responded to the survey (Males=53; Female=58), including 88 athletic training and 23 physical therapy faculty. Methods: An email was sent to all program directors of athletic training and physical therapy programs in the US with a Qualtrics survey link for faculty to complete. The 23-item questionnaire included closed-ended questions on demographics, where they sought cannabis-related information, and whether program curriculum includes cannabis-related topics. Frequencies were computed for sources of cannabis-related information and whether program curriculum includes cannabis-related topics. Results: Sixty (53.5%) participants stated they have not received information or completed any training related to cannabis. Of those receiving information or completing training (n=51), the most common sources of information were live lectures (n=23), peer-reviewed manuscripts (n=24), and social media/news (n=21). Also, 43 (38%) participants noted teaching cannabis-related topics in their curriculum. However, 33 participants reported either not completing training related to cannabis or being self-educated through the current literature. Conclusions: These results suggest program faculty may benefit from formal cannabis education in an effort to adequately integrate the content into curriculums