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Unit of study_

EXSS2030: Muscle Adaptations to Use and Disuse

Semester 2, 2023 [Normal day] - Camperdown/Darlington, Sydney

This unit examines muscle and neural adaptations to high-resistance training (HRT, also known as strength training) in clinical and aged populations as well as in healthy adults. To understand these adaptations the basis of muscle force development is first examined in terms of myosin function and the structural organization muscle (e.g. myofilaments, sarcomeres, myofibrils, muscle fibers) and the neural processes involved in maximal voluntary contractions. Muscle hypertrophy in response to HRT is examined, and well as muscle atrophy in response to disuse. Neural adaptations to HRT and disuse are also discussed. The unit combines this biological approach with a parallel evidence-based development of practical guidelines for HRT prescription, and outcomes of HRT in randomised controlled trials (RCTs) and meta-analyses of RCTs in clinical conditions. Students gain skills in strength assessment in practical sessions, and in the prescription of HRT through participation in a brief HRT program. Students also gain skills in critical analysis of published RCTs examining HRT in clinical populations. Finally the unit examines concepts on muscle energy balance in terms ATP production and use during exercise, and the concepts of peripheral and central fatigue.

Unit details and rules

Unit code EXSS2030
Academic unit Movement Sciences
Credit points 6
Prohibitions
? 
EXSS1036
Prerequisites
? 
None
Corequisites
? 
None
Assumed knowledge
? 

None

Available to study abroad and exchange students

No

Teaching staff

Coordinator Tom Gwinn, tom.gwinn@sydney.edu.au
Lecturer(s) Tom Gwinn, tom.gwinn@sydney.edu.au
Tutor(s) Philippe jacquot, philippe.jacquot@sydney.edu.au
Type Description Weight Due Length
Supervised exam
? 
Final exam
Short answer and MCQ
50% Formal exam period 2 hours
Outcomes assessed: LO1 LO2 LO3 LO4 LO6
Online task Quiz 1
Short answer and MCQ
5% Week 04
Due date: 21 Aug 2023 at 23:59
15 minutes
Outcomes assessed: LO1
Online task Quiz 2
Short answer and MCQ
5% Week 06
Due date: 04 Sep 2023 at 23:59
15 minutes
Outcomes assessed: LO1 LO2
Online task Quiz 3
Short answer and MCQ
5% Week 08
Due date: 18 Sep 2023 at 23:59
15 minutes
Outcomes assessed: LO2 LO6
Presentation group assignment Evidence base presentation
Oral presentation and report
15% Week 10 15 minutes, 500 words
Outcomes assessed: LO4
Online task Quiz 4
Short answer and MCQ
5% Week 10
Due date: 16 Oct 2023 at 23:59
15 minutes
Outcomes assessed: LO3 LO4
Assignment group assignment Practical Report
Written Report
15% Week 12
Due date: 23 Oct 2023 at 23:55
3 A4 pages
Outcomes assessed: LO5
group assignment = group assignment ?

Assessment summary

4 x ONLINE QUIZZES (5% each) MCQ quiz plus short answer questions reviewing the previous 2 weeks lecture content. Each quiz will take approximately 15 min to complete, but will be ‘open’ for one week.

PRACTICAL REPORT: Group assignment.  Students will analyse cross-sectional muscle strength data collected in pre-training assessment practical and longitudinal data from high-resistance training program. Report will using spreadsheet functions to determine group means, maximum and minimum values, and histogram plots. Reports will include short answer questions related to the interpretation of the data analysis.

EVIDENCE-BASE PRESENTATION: Group assignment. Students acquire skills evidence-based practice by evaluating and presenting a review of a randomised controlled trial examining a high-resistance training intervention. The study is self-selected from a master list of studies in populations including healthy older-adult, frail elderly, a range of clinical conditions (including diabetes, CHF, CAD and COPD) and healthy young adults. All students in a group are expected to contribute to the live presentation. Attendance at the presentation session is compulsory. If students cannot attend physically, then Zoom attendance is required. Non-attendance of individual student in a group will result in that student receiving half marks for the presentation, in the absence of Special Consideration submission.

FINAL EXAM: The exam questions will cover the lecture and tutorial material from week 1-12.

Detailed information for each assessment can be found on Canvas.

Note: An Absent Fail grade will result from non-attendance at the Final Exam unless special consideration is granted. Quizzes are not compulsory assessments and non-submission will not result in an absent fail grade.

Assessment criteria

The University awards common result grades, set out in the Coursework Policy 2014 (Schedule 1).

As a general guide, a high distinction indicates work of an exceptional standard, a distinction a very high standard, a credit a good standard, and a pass an acceptable standard.

Result name

Mark range

Description

High distinction

85 - 100

 

Distinction

75 - 84

 

Credit

65 - 74

 

Pass

50 - 64

 

Fail

0 - 49

When you don’t meet the learning outcomes of the unit to a satisfactory standard.

For more information see sydney.edu.au/students/guide-to-grades.

For more information see guide to grades.

Late submission

In accordance with University policy, these penalties apply when written work is submitted after 11:59pm on the due date:

  • Deduction of 5% of the maximum mark for each calendar day after the due date.
  • After ten calendar days late, a mark of zero will be awarded.

This unit has an exception to the standard University policy or supplementary information has been provided by the unit coordinator. This information is displayed below:

Practical report: Deduction of 5% of the maximum mark for each calendar day after the due date. After ten calendar days late, a mark of zero will be awarded.

Academic integrity

The Current Student website  provides information on academic integrity and the resources available to all students. The University expects students and staff to act ethically and honestly and will treat all allegations of academic integrity breaches seriously.  

We use similarity detection software to detect potential instances of plagiarism or other forms of academic integrity breach. If such matches indicate evidence of plagiarism or other forms of academic integrity breaches, your teacher is required to report your work for further investigation.

You may only use artificial intelligence and writing assistance tools in assessment tasks if you are permitted to by your unit coordinator, and if you do use them, you must also acknowledge this in your work, either in a footnote or an acknowledgement section.

Studiosity is permitted for postgraduate units unless otherwise indicated by the unit coordinator. The use of this service must be acknowledged in your submission.

Simple extensions

If you encounter a problem submitting your work on time, you may be able to apply for an extension of five calendar days through a simple extension.  The application process will be different depending on the type of assessment and extensions cannot be granted for some assessment types like exams.

Special consideration

If exceptional circumstances mean you can’t complete an assessment, you need consideration for a longer period of time, or if you have essential commitments which impact your performance in an assessment, you may be eligible for special consideration or special arrangements.

Special consideration applications will not be affected by a simple extension application.

Using AI responsibly

Co-created with students, AI in Education includes lots of helpful examples of how students use generative AI tools to support their learning. It explains how generative AI works, the different tools available and how to use them responsibly and productively.

WK Topic Learning activity Learning outcomes
Week 01 Introduction / Normal strength / Evidence-base for training Lecture (2 hr) LO1 LO4
Week 02 Evolutionary logic of training / Screening & safety for training / Myosin structure & function Lecture (2 hr) LO1 LO5
Practical 1: Arm flexion 1RM & training Practical (2 hr) LO5
Week 03 Sarcomeres, myofibrils muscle fibers / Summation of forces and movements / Eccentric and concentric contractions Lecture (2 hr) LO1
Tutorial 1: Muscle structure and function Tutorial (2 hr) LO1
Week 04 Fibre types / Muscle activation / EC coupling Lecture (2 hr) LO1
Tutorial 2: Eccentric and concentric contractions Tutorial (2 hr) LO1
Week 05 Neural adaptations to resistance training / DOMS / Protein structure Lecture (2 hr) LO1 LO2
Practical 2: Use of pin load weight machines Practical (2 hr) LO5
Week 06 Steps in protein synthesis / Effect of resistance training on protein synthesis Lecture (2 hr) LO2
Tutorial 3: Activation, Adaptations to resistance training Tutorial (2 hr) LO1 LO2
Week 07 Cellular mechanisms of muscle hypertrophy / Detraining and dropouts Lecture (2 hr) LO2 LO3
Week 08 Mechanisms of disuse muscle atrophy / Resistance training for older clients Lecture (2 hr) LO3
Practical 3: Elastic training and step training Practical (2 hr) LO5
Week 09 Evidence for resistance training in clinical conditions / Muscle atrophy in CHF and COPD Online class (2 hr) LO3 LO4
Week 10 Matching ATP resynthesis to use / Rates of reaction / The CK and AK reactions Lecture (2 hr) LO6
Assessment - Student Presentation: Review of resistance training RTC Presentation (2 hr) LO4
Week 11 Aerobic metabolism: OxPhos and Dehydrogenase reactions / Allosteric enzymes Lecture (2 hr) LO6
Week 12 Lactate accumulation and central fatigue / Integrated perspective of energy metabolism Lecture (2 hr) LO6
Tutorial 4: Energy metabolism Tutorial (2 hr) LO6
Review and revision Lecture (2 hr) LO1 LO2 LO3 LO6

Attendance and class requirements

Attendance: Students are encouraged to attend tutorials and practicals 

The Week 10 presentations are group face-to-face presentations. All members of the group are required to participate in the presentation, i.e. each person has to participate in that presentation by speaking to some of the specific presentation slides. Non-attendance or non-participation or  without Special Consideration will result in the student receiving 50% of the mark received by the other students in that presentation group.

Study commitment

Typically, there is a minimum expectation of 1.5-2 hours of student effort per week per credit point for units of study offered over a full semester. For a 6 credit point unit, this equates to roughly 120-150 hours of student effort in total.

Required readings

There is no prescribed textbook for this unit. Content is referenced to primary research articles on a lecture-to-lecture basis. Some examples of  core references are given below, however reading of these primary sources is not required. Links to references are available on Canvas. 

  • Bickel CS et al. Exercise Dosing to Retain Resistance Training Adaptations in Young and Older Adults. Med Sci Sports Exerc 43: 1177 1187, 2011.
  • Egan, B., Sharples, A.P. Molecular responses to acute exercise and their relevance for adaptations in skeletal muscle to exercise training. Physiological Reviews 103; 2057-2170, 2023
  • Houston ME, et al Muscle performance, morphology and metabolic capacity during strength training and detraining: a one leg model. Eur J Appl Physiol 51 25 35 1983
  • Hubal MJ. et al. Variability in muscle size and strength gain after unilateral resistance training. Med Sci Sports Exerc. 37:964-72, 2005
  • Josse AR. et al Body composition and strength changes in women with milk and resistance exercise. Medicine & Science in Sports & Exercise. 42:1122-30, 2010.
  • Lopez, P., Radaelli, R., Taaffe, D.R., ... Häkkinen, K., Pinto, R.S. Resistance Training Load Effects on Muscle Hypertrophy and Strength Gain: Systematic Review and Network Meta-analysis. Medicine and Science in Sports and Exercise 53; 1206–1216, 2021
  • Mcleod JC et al. Resistance exercise training as a primary countermeasure to age-related chronic disease. Front Physiol. 10, 1-11, 2019
  • Wang N. et al. Muscle fiber types of women after resistance training — Quantitative ultrastructure and enzyme activity. Pflugers Archiv. 424:494 502, 1993.

 

Learning outcomes are what students know, understand and are able to do on completion of a unit of study. They are aligned with the University's graduate qualities and are assessed as part of the curriculum.

At the completion of this unit, you should be able to:

  • LO1. Explain the limits to voluntary muscle force production in terms of both skeletal muscle structure and neural activation
  • LO2. Explain the neuro-muscular adaptations to high-resistance training in health, aging and disease
  • LO3. Explain the neuro-muscular adaptations to muscle disuse, aging and chronic disease states effecting skeletal muscle
  • LO4. Acquire skills in evaluating evidence-based guidelines for prescription of high-resistance training in health and disease
  • LO5. Acquire skills and experience in the assessment of maximal voluntary strength and in the prescription and evaluation of a high-resistance training program
  • LO6. Explain muscle energy metabolism in terms of ATP demand and supply and explain causes of fatigue during muscular exercise.

Graduate qualities

The graduate qualities are the qualities and skills that all University of Sydney graduates must demonstrate on successful completion of an award course. As a future Sydney graduate, the set of qualities have been designed to equip you for the contemporary world.

GQ1 Depth of disciplinary expertise

Deep disciplinary expertise is the ability to integrate and rigorously apply knowledge, understanding and skills of a recognised discipline defined by scholarly activity, as well as familiarity with evolving practice of the discipline.

GQ2 Critical thinking and problem solving

Critical thinking and problem solving are the questioning of ideas, evidence and assumptions in order to propose and evaluate hypotheses or alternative arguments before formulating a conclusion or a solution to an identified problem.

GQ3 Oral and written communication

Effective communication, in both oral and written form, is the clear exchange of meaning in a manner that is appropriate to audience and context.

GQ4 Information and digital literacy

Information and digital literacy is the ability to locate, interpret, evaluate, manage, adapt, integrate, create and convey information using appropriate resources, tools and strategies.

GQ5 Inventiveness

Generating novel ideas and solutions.

GQ6 Cultural competence

Cultural Competence is the ability to actively, ethically, respectfully, and successfully engage across and between cultures. In the Australian context, this includes and celebrates Aboriginal and Torres Strait Islander cultures, knowledge systems, and a mature understanding of contemporary issues.

GQ7 Interdisciplinary effectiveness

Interdisciplinary effectiveness is the integration and synthesis of multiple viewpoints and practices, working effectively across disciplinary boundaries.

GQ8 Integrated professional, ethical, and personal identity

An integrated professional, ethical and personal identity is understanding the interaction between one’s personal and professional selves in an ethical context.

GQ9 Influence

Engaging others in a process, idea or vision.

Outcome map

Learning outcomes Graduate qualities
GQ1 GQ2 GQ3 GQ4 GQ5 GQ6 GQ7 GQ8 GQ9

This section outlines changes made to this unit following staff and student reviews.

Comment: Tutorial answers could be uploaded after each respective week that would be helpful. Response for 2023: Yes, tutorials answer will be uploaded within 1 week of each tutorial. Comment: Our training could have easily been done right after each tutorial if we wouldhave had one each week. Response for 2023: Schedule of tutorials altered to have prac or tut every week for Weeks 2-6 (plus one more prac on week 8 and tut in week 12) Reduction of content in in tuts in Weeks 3,4, and 6 to allow 20 min of tranining time at ean of each tut.

This unit of study may require you to attend a teaching activity timetabled in teaching venues installed with the University’s Clinical Recording and Observation System (CROS) in the Susan Wakil Health Building. Students should be aware of the privacy and information management implications of this system. For more information, please refer to the University’s Privacy Statement.

Disclaimer

The University reserves the right to amend units of study or no longer offer certain units, including where there are low enrolment numbers.

To help you understand common terms that we use at the University, we offer an online glossary.