Medicine and Health Sciences Commons^™

Musculoskeletal Responses To Exercise Plus Nutrition In Men With Prostate Cancer On Androgen Deprivation: A 12-Month Rct, Jack Dalla Via, Patrick J. Owen, Robin M. Daly, Niamh L. Mundell, Patricia M. Livingston, Timo Rantalainen, Stephen J. Foulkes, Jeremy L. Millar, Declan G. Murphy, Steve F. Fraser

Research outputs 2014 to 2021

Purpose:

Androgen deprivation therapy (ADT) for prostate cancer has multiple adverse effects on musculoskeletal health. This 12-month randomized controlled trial aimed to assess the effects of multicomponent exercise training combined with whey protein, calcium and vitamin D supplementation on bone mineral density (BMD), structure and strength, body composition, muscle strength, and physical function in ADT-treated men.

Methods:

Seventy ADT-treated men were randomized to exercise plus supplementation (Ex + Suppl; n = 34) or usual care (control; n = 36). Ex + Suppl involved thrice weekly progressive resistance training plus weight-bearing impact exercise with daily multinutrient supplementation. Primary outcomes were DXA …

Lower-Limb Injury In Elite Australian Football: A Narrative Review Of Kinanthropometric And Physical Risk Factors, Callum J. Mccaskie, Marc Sim, Robert U. Newton, Nicolas H. Hart

Research outputs 2014 to 2021

Objective

This review aims to provide a succinct and critical analysis of the current physical and mechanical demands of elite Australian football while examining lower-limb injury and the associated physical and kinanthropometric risk factors.

Methods

MEDLINE, PubMed, Web of Science and SPORTSDiscus electronic databases were searched for studies that investigated the playing demands, injury trends, and physical and kinanthropometric injury risk factors of elite Australian football. Articles from similar team sports including soccer and rugby (union and league) were also included.

Results

While the physical demands of elite AF have steadied over the past decade, injury rates continue to rise …

Fatigue-Related Feedback From Calf Muscles Impairs Knee Extensor Voluntary Activation, Harrison T. Finn, David S. Kennedy, Simon Green, Janet L. Taylor

Research outputs 2014 to 2021

INTRODUCTION:

Fatigue-related group III/IV muscle afferent firing from agonist, antagonist or distal muscles impairs the ability to drive the elbow flexors maximally, that is, reduces voluntary activation. In the lower limb, the effect of feedback from distal muscles on the proximal knee extensors is unknown. Here, we test whether maintained group III/IV afferent feedback from the plantarflexor muscles reduces voluntary activation of the knee extensors.

METHODS:

On 2 d, voluntary activation of the knee extensors during maximal voluntary contractions (MVCs) was assessed in 12 participants before and after a 3-min fatiguing task of the plantarflexors. On 1 d, an inflatable …

Could Titin Have A Role In Strain-Induced Injuries?, Craig Perrin, Kazunori Nosaka, James Steele

Research outputs 2014 to 2021

It has been known for some time that strain injuries occur through the excessive lengthening of a muscle. However, the precise mechanism for strain injury remains elusive and has been the subject of recent debate in the Journal of Sport and Health Science, but it seems sensible to consider mechanisms at the level of the muscle fiber. It was previously believed that damage was the result of non-uniform stretching of sarcomeres on the descending limb of the length–tension curve, with the weakest sarcomeres undergoing the greatest deformation and ultimately damaging the myofibril. This non-uniform lengthening was also believed to …

Musculoskeletal Asymmetry In Football Athletes: A Product Of Limb Function Over Time, Nicolas H. Hart, Sophia Nimphius, Jason Weber, Tania Spiteri, Timo Rantalainen, Michael Dobbin, Robert Newton

Research outputs 2014 to 2021

Purpose

Asymmetrical loading patterns are commonplace in football sports. Our aim was to examine the influence of training age and limb function on lower-body musculoskeletal morphology.

Methods

Fifty-five elite football athletes were stratified into less experienced ( ≤ 3 yr; n = 27) and more experienced ( > 3 yr; n = 28) groups by training age. All athletes underwent whole-body dual-energy x-ray absorptiometry scans and lower-body peripheral quantitative computed tomography tibial scans on the kicking and support limbs.

Results

Significant interactions between training age and limb function were evident across all skeletal parameters (F16, 91 = 0.182, P = 0.031, …

Pgc-1Α Mediated Muscle Aerobic Adaptations To Exercise, Heat And Cold Exposure, Mohammed Ihsan, Greig Watson, Chris R. Abbiss

Research outputs 2014 to 2021

PGC-1α is regarded as a key regulator of mitochondrial biogenesis due to its central role in regulating the activity of key transcription factors associated with encoding mitochondrial components. Additionally, PGC-1α has shown to mediate adaptations that increase fat metabolism and angiogenesis, contributing to the overall oxidative phenotype of the muscle. While it is well established that exercise is a potent stimulator of PGC-1α, recent evidence indicates that heat and cold exposures may also influence mitochondrial biogenesis through the up-regulation of PGC-1α. This highlights the potential use of these modalities in conjunction with exercise to enhance training adaptations. As such, the …