Lower Body and Extremity Flexibility and Strength do Not Correlate With Standing, Stooping and Crouching Performances

NCT05027022 | Completed

• 1 other identifier: 601167887/85229
• Study Type: observational
• Target: 97
• Locations: 1 country
• Sites: 1

Brief Summary

Standing, stooping and crouching are considered important physical demands of the work, which are among the 20 physical work demands defined in the Dictionary of Occupational Titles(1, 2). Agricultural workers, underground miners, aircraft baggage handlers, plumbers, mechanics and many other workers adopt these postures(3-7). These postures are also used in daily activities such as gardening, shopping andcleaning(8).Standing describes an upright position without moving(2). Maintaining this position requires sustained musclea ctivity in various muscles of the body known as the antigravity muscles(9). Stooping consists of bending the torso forward and down with the legs in a relatively straight position. Crouching is an activity performed with the flexion of the hip, knee and ankle while the trunk is in a vertical position. During stooping, the lower back and posterior leg muscles are stretched. Crouching involves similar length changes, particularly in the quadriceps and ankle plantar flexor muscles, as a result of significant flexion in the knee and ankle joints.Unlike standing, as the hip and knee joints are fully flexed during crouching, activation of the quadriceps and calf muscles is potentially required to support lower extremities and weight transfer between limbs(10). Consideration of the flexibility defined as the maximum range of motion, and the muscular strength associated with the amount of external force a muscle can exert(11, 12), may provide a different perspective to the health care professionals during the interpretation of the work or daily activities. Knowing the relationship between standing, stooping and crouching performances with the direct measurement methods such as flexibility and strength may help to make a more accurate decision during the health care assessments and guiding individuals who have difficulties in these activities to the appropriate rehabilitation program. Starting from this point of view, in this study, we aimed to evaluate the relationship between flexibility and muscular strength tests with standing, stooping and crouching performances.

Conditions

Flexibility; Strength

Keywords

flexibility, musclestrength, standing, stooping, crouching

Outcome Measures

Primary Outcomes (3)

• work performances

  WBROM test was used.This testprovides information on range of motion, agility and endurance.In this test, which took approximately 30 minutes, the participant was positioned in front of the test panel with the upper frame 6 inches above the head. The participant unscrewed the 22 nuts to release and transfer three different shapes in the standing position in the first transfer, in the standing and stooping positions in the second, in the stooping and crouching positions in the third and in the crouching and standing positions in the last transfer, and retightened the nuts to fix the shapes. The completion time of each transfer and total time were recorded as seconds.

  30 minutes

• flexibility

  MSR test was performed using Baseline™ modified sit and reach box with adjustable measuring bar.At the beginning of this test, while the head, back and hips were against the wall and the soles of the feet were against the block, hands were placed on top of each other and the arms were extended to the front. In this position, only scapular abduction was performed while the head and back were in contact with the wall. The point where the fingertip touches the sliding measuring apparatus was determined as the individual relative zero point. The participant was asked to reach out slowly with hands on top of each other and to advance the movable part of the test device with fingertips. The mean value of three trials was recorded in centimeters (cm).

  10 minutes

• strength

  Isometric back and leg muscle strengths were assessed using a Baseline dynamometer. For this test, the participants were positioned with knees extended, trunk slightly flexed, arms straight and palms facing themselves. In this position, isometric back strength was evaluated by asking the participant to do back extension with maximum force. Leg and back muscle strength measurements were performed three times with one minute pause after each measurement and the mean value in kilograms (kg) was recorded

  10 minutes

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Over the age of 18, 97 sedentary young adults studying at university

Sponsors & Collaborators

• Pamukkale University: lead

Study Sites (1)

Pamukkale University

Denizli, Pamukkale, 20070, Turkey (Türkiye)

Location

Study Officials

• umut eraslan

  Pamukkale University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD

Study Record Dates

• First Submitted: August 25, 2021
• First Posted: August 30, 2021
• Study Start: March 4, 2019
• Primary Completion: December 27, 2019
• Study Completion: January 1, 2020
• Last Updated: August 30, 2021

Record last verified: 2021-08

Locations

TU (1)