3 Seminar Two

In the lecture this week you will have learnt about types of observational studies (case studies, cross-sectional studies and cohort studies). In this session you will undertake a second mini experimental study and discuss the paper you were instructed to read last week.

3.1 Task 1

As a group, review and discuss the fabricated study protocol outlined below. Consult with your tutor if you are unsure of any of the language and/or methods being used. Once you have discussed the study you will take responsibility for conducting the study, collecting the data, and analysing the findings.

3.1.1 Study design:

A randomised, unblinded, parallel two-arm study

3.1.2 Study participants:

Participants will be recruited from Staffordshire University via conducting research seminars. No incentives will be offered for the participation in this research.

Healthy students I) 18-50 years of age, II) studying at Staffordshire University, III) enrolled on the conducting research module, IV) willing to participate in the study will be included. Students who have I) experienced a lower limb injury in the last 4 weeks, II) have a neurological impairment of any description III) are unwilling to participate will be excluded from the study.

3.1.3 Randomisation

To preserve allocation concealment an independent person generated the randomisation list. The order in which participants receive treatment is randomly allocated using a block randomised design (block size = 4) using a computer random number generator to either post activation potentiation (PAP) or control.

Before opening the database, assign each class member a number 0-k. Once every class member has a number, open the following database, participants allocated to group 1 will receive the intervention, those allocated to group 0 will receive the control: mini_study_pap

3.1.4 Intervention:

Post activation potentiation (PAP) protocol:

  1. Perform one set of five jumps with the load corresponding to ~10% of body mass

3.1.5 Control:

Passive rest protocol:

  1. Remain seated for a minimum of 5 minutes

3.1.6 Outcomes

This test should be conducted immediately after (post-test) the intervention

Using the optijump equipment perform the following count movement jump a test which involves a single jump starting from an upright position with hands on hips and with counter movement

  1. Rest hands on hips (to measure leg performance instead of arm performance)
  2. Stand straight up for 1-2 seconds
  3. Jump as high as you can!
  4. Land with normal flexion and stand still in neutral position for 1..2 seconds
  5. Record the flight time and jump height achieved
  6. Repeat these steps 3 more times

3.1.7 Analysis

Descriptive data is calculated for anthropometric measurements and expressed as mean ± standard deviation. Normality is assessed by the Shapiro-Wilk’s test. The between-participant difference in counter movement flight time and height is estimated using an independent t-test. All data will be analysed using Jamovi.

3.2 Task 2

In the remaining seminar time discuss the Day-to-day change in muscle strength and MRI-measured skeletal muscle size during 7 days KAATSU resistance training: A case study study you were instructed to review last week.

3.3 Task 3

Download the following article onto your own onedrive and open it in a pdf reader (such as, Adobe Acrobat). Read the study and make notes in preparation for next weeks seminar:

Determinants of acceleration and maximum speed phase of repeated sprint ability in soccer players: A cross-sectional study