Are shorter resistance training sessions better than longer?
| ISRCTN | ISRCTN81548172 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN81548172 |
| Secondary identifying numbers | 48876 |
- Submission date
- 14/02/2022
- Registration date
- 15/02/2022
- Last edited
- 27/10/2022
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Other
Plain English summary of protocol
Background and study aims
Designing time-efficient training programs can be valuable to increasing participation and adherence to a strength training program. Briefer, more frequent weekly training sessions might allow for training with greater training loads compared to less frequent sessions of a longer duration, due to maximum energy use and reduced fatigue during exercise. It is possible that a higher session frequency would lead to shorter and more intense sessions with less accumulated fatigue, ultimately resulting in more work performed (i.e. a higher training volume). This may further result in greater muscular strength, muscle growth and power output.
Who can participate?
Healthy, adult females (over 18 years of age and have not reached menopause) with little experience in resistance training
What does the study involve?
The study involves resistance training twice or four times per week over a period of 12 weeks. Each muscle group will be exercised twice per week in both groups. Before and after the intervention, the participants will be tested for maximal strength, muscle mass and power output.
What are the possible benefits and risks of participating?
The participants will benefit from receiving a designed resistance training program and being trained by experts over a period of 12 weeks. They will get information about their physical condition and be informed of the effect of their training. There are always some risks related to training, but the health benefits surpass the risks.
Where is the study run from?
Western Norway University of Applied Sciences (Norway)
When is the study starting and how long is it expected to run for?
January 2016 to December 2016
Who is funding the study?
Western Norway University of Applied Sciences (Norway)
Who is the main contact?
Helene Pedersen
helene.pedersen@hvl.no
Contact information
Scientific
Kvernavegen 24
Kaupanger
6854
Norway
| Phone | +47 (0)97531437 |
|---|---|
| vidar.andersen@hvl.no |
Study information
| Study design | Randomised parallel trial |
|---|---|
| Primary study design | Interventional |
| Secondary study design | Randomised parallel trial |
| Study setting(s) | Other |
| Study type | Other |
| Participant information sheet | Not available in web format. Please contact Helene Pedersen (helene.pedersen@hvl.no) to request a participant information sheet. |
| Scientific title | A randomized trial on the efficacy of split-body versus full-body resistance training in non-resistance trained women |
| Study acronym | CompFreq |
| Study objectives | The aim of the study is to examine the effects of performing two weekly total-body sessions versus four weekly split-body sessions, with an equated weekly training frequency per muscle group, on muscular adaptations in untrained women |
| Ethics approval(s) | The study does not require ethics approval. Due to national requirements, ethics approval is only required when research is aimed at bringing new knowledge regarding sickness and health. |
| Health condition(s) or problem(s) studied | Resistance training |
| Intervention | A randomized intervention trial was conducted to assess the efficacy of performing either a full-body (FB) resistance-training program twice per week, or a split-body (SPLIT) program four times per week over a 12-week study period. Each muscle group was exercised the same number of times per week (twice) for an equal number of sets and repetitions in both groups. Participants were pair-matched according to their baseline strength levels and then randomly assigned to one of the two experimental groups. The SPLIT group performed four exercises targeting the lower extremities twice per week and six exercises targeting the upper body twice per week. Alternatively, the FB group performed all ten exercises in the same session, with sessions carried out twice per week. Maximal muscle strength (1-RM in leg press, Lat pulldown and bench press), muscle mass (bioelectrical impedance), jump height (CMJ) and power output in the bench press (at 15 kg) were tested pre- and post-intervention. |
| Intervention type | Behavioural |
| Primary outcome measure | Maximal strength measured as kilograms lifted in 1 repetition maximum (1-RM) tests in leg press, lat pulldown and bench press at baseline and after the 12-week intervention |
| Secondary outcome measures | 1. Muscle mass measured in kilograms using bioelectrical impedance (Tanita MC780 multi-frequency segmental body composition analyzer) at baseline and after the 12-week intervention 2. Jump height measured in centimeters performing a countermovement jump on a force platform at baseline and after the 12-week intervention 3. Power output in the bench press measured in watts lifting a 15 kg barbell, calculated using a linear encoder measuring velocity and a commercial software program (MuscleLab Software v8.13, Ergotest Technology AS, Langesund, Norway) at baseline and after the 12-week intervention |
| Overall study start date | 15/01/2016 |
| Completion date | 20/12/2016 |
Eligibility
| Participant type(s) | Healthy volunteer |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Sex | Female |
| Target number of participants | 50 |
| Total final enrolment | 50 |
| Key inclusion criteria | 1. Female 2. Not performed strength training regularly the previous 6 months 3. Free of injury or pain that could impair performance during training or testing 4. Over 18 years of age, and had not reached menopause |
| Key exclusion criteria | 1. Male 2. Conducting resistance training on a weekly basis 3. Injuries or pains that impairs the training and/or testing 4. Under the age of 18 years or having reached menopause |
| Date of first enrolment | 15/07/2016 |
| Date of final enrolment | 20/08/2016 |
Locations
Countries of recruitment
- Norway
Study participating centre
Sogndal
6856
Norway
Sponsor information
University/education
Røyrgata 6
Sogndal
6856
Norway
| Phone | +47 (0)57676000 |
|---|---|
| post@hvl.no | |
| Website | https://www.hvl.no |
"ROR" |
https://ror.org/05phns765 |
Funders
Funder type
University/education
Government organisation / Universities (academic only)
- Alternative name(s)
- Western Norway University of Applied Sciences, HVL
- Location
- Norway
Results and Publications
| Intention to publish date | 20/05/2022 |
|---|---|
| Individual participant data (IPD) Intention to share | Yes |
| IPD sharing plan summary | Available on request |
| Publication and dissemination plan | The results are planned to be published in a high-impact peer-reviewed journal |
| IPD sharing plan | The datasets analysed during the current study are available upon request from Helene Pedersen (helene.pedersen@hvl.no). The researchers will be able to share the raw data on an individual level (in an anonymous form) or at group levels from the different tests. The data will be available after the publication of the article until 5 years after the publication date and shared with anyone as long as the requests are not restricted by Norwegian laws and regulations and the Western Norway University of Applied Sciences regulations. Since the participants have not given their consent to share the individual data, there may be restrictions regarding what data and to whom they can be shared. Therefore, please contact helene.pedersen@hvl.no for an update on the process. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Results article | 14/05/2022 | 27/10/2022 | Yes | No |
Editorial Notes
27/10/2022: Publication reference added.
15/02/2022: Trial's existence confirmed by the Norwegian Centre for Research Data (NSD).
