Repetition Prescription Approaches Delivered Via Videoconferencing

NCT04895865 | Completed

• 1 other identifier: IHalperin
• Study Type: interventional
• Target: 58
• Locations: 1 country
• Sites: 1

Brief Summary

A randomized controlled trial comparing between two approaches of prescribing repetition-numbers in resistance training (RT) sessions on psychological, physiological, and performance outcomes. Sixty healthy and sedentary adults (age range: 18-45) will be randomly allocated to either the "predetermined" or "self-selected" groups. The groups will differ in the amount of choice they will be able to make concerning the resistance of each exercise and the number of repetitions they complete (see detailed description). Both groups will complete two sessions per week composed of body weight and resistance band exercises, lasting 45 minutes for eight weeks. The sessions will be delivered live by a certified instructor using a videoconferencing platform. The primary aim of this study is: Compare between the "predetermined" and the "self-selected" repetition prescription approaches on psychological, physiological, and performance outcomes in a cohort of 60 healthy and sedentary adults (age range: 18-45) over an eight-week period of live, videoconferencing RT sessions. The secondary aim is: Determine the influence of live, videoconferencing group RT sessions on psychological, physiological, and performance outcomes across groups.

Conditions

Health Behavior

Keywords

Physical activity; Exercise adherence; Resistance training; Affective responses; eHealth; Online exercise; Self-selection; Rating of Perceived Exertion

Outcome Measures

Primary Outcomes (1)

• Change from baseline enjoyment score

  Participants will respond to a bi-monthly survey introducing the question: "how much did you enjoy the previous four sessions?" using a visual analog scale (VAS) ranging from (-100) (i.e., did not enjoy it at all) to 100 (i.e., enjoyed it very much). First, the change in scores from one time point the previous one will be calculated, resulting in three change scores across the duration of the study (e.g., week 4 minus week 2, week 6 minus week 4, etc.). Then, the three change scores will be averaged per group and compared between groups as the main outcome.

  Change from week two to week four, week six and the end of the program on week eight.

Secondary Outcomes (13)

• Adherence proportion

  Through study completion, a period of eight weeks.

• Change in fat free mass (FFM)

  Change from baseline to the end of intervention at eight weeks.

• Change in body mass index (BMI)

  Change from baseline to the end of intervention at eight weeks.

• Change in maximal strength:

  Change from baseline to the end of intervention at eight weeks.

• Change in hand-grip strength:

  Change from baseline to the end of intervention at eight weeks.

Study Arms (2)

Self-selected

EXPERIMENTAL

Participants in the "self-selected" arm will choose the initial resistance in view of their preferences, and complete as many repetitions as they wish in order to reach the target rating of perceived exertion RPE of 7/10

Behavioral: RPE-based load and repetition number selection

Predetermined

ACTIVE COMPARATOR

Participants in the "predetermined" arm will be instructed to complete ten repetitions per set and exercise, while aiming to reach a rating of perceived exertion (RPE) of 7/10 by the 10th repetition. This means that participants will need to select and adjust the resistance of each exercise (e.g., band's resistance) to achieve this goal.

Behavioral: Predetermined load and number of repetitions

Interventions

RPE-based load and repetition number selection BEHAVIORAL

Providing trainees with choices regarding the load and the number of repetitions to be performed per set and exercise

Self-selected

Predetermined load and number of repetitions BEHAVIORAL

Trainees predetermine the load and perform ten repetitions per set and exercise

Predetermined

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Healthy
• Non-active (characterized by 60 minutes or less per week of formal exercise sessions)
• Ages of 18-45
• Did not participate in RT in the past six months.
• Participants will be asked to fill out a health questionnaire. If they marked any of the items on the health questionnaire as positive (e.g., diabetes) they were asked to provide a medical clearance from a doctor.
• Signing a health declaration to participate in physical activity according to the government regulations

You may not qualify if:

• Orthopedic or neurological conditions
• Diagnosis of co-morbidities
• Routine use of prescription medication
• Pregnancy
• Less than six months after childbirth

Sponsors & Collaborators

• Tel Aviv University: lead
• Israel Science Foundation: collaborator

Study Sites (1)

Tel Aviv University

Tel Aviv, 69978, Israel

Location

Related Publications (4)

• Schwartz H, Har-Nir I, Wenhoda T, Halperin I. Staying physically active during the COVID-19 quarantine: exploring the feasibility of live, online, group training sessions among older adults. Transl Behav Med. 2021 Mar 16;11(2):314-322. doi: 10.1093/tbm/ibaa141.

  PMID: 33447852 BACKGROUND

• Patall EA, Cooper H, Robinson JC. The effects of choice on intrinsic motivation and related outcomes: a meta-analysis of research findings. Psychol Bull. 2008 Mar;134(2):270-300. doi: 10.1037/0033-2909.134.2.270.

  PMID: 18298272 BACKGROUND

• Lopes JSS, Machado AF, Micheletti JK, de Almeida AC, Cavina AP, Pastre CM. Effects of training with elastic resistance versus conventional resistance on muscular strength: A systematic review and meta-analysis. SAGE Open Med. 2019 Feb 19;7:2050312119831116. doi: 10.1177/2050312119831116. eCollection 2019.

  PMID: 30815258 BACKGROUND

• Emanuel A, Har-Nir I, Rozen Smukas II, Halperin I. The effect of self-selecting the number of repetitions on motor performance and psychological outcomes. Psychol Res. 2021 Sep;85(6):2398-2407. doi: 10.1007/s00426-020-01402-4. Epub 2020 Aug 10.

  PMID: 32778961 BACKGROUND

Related Links

• Resistance bands used in the intervention

MeSH Terms

Conditions

Health Behavior; Motor Activity

Condition Hierarchy (Ancestors)

Behavior

Study Officials

• Israel Halperin, PhD

  Tel Aviv University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: Participants will be blinded to allocation
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Senior faculty member

Model Details: Intervention group receives alternative treatment Control group receives traditional treatment

Study Record Dates

• First Submitted: May 9, 2021
• First Posted: May 20, 2021
• Study Start: May 23, 2021
• Primary Completion: August 10, 2021
• Study Completion: August 10, 2021
• Last Updated: August 13, 2021

Record last verified: 2021-08

Locations

IL (1)