Tai Chi as Physical Activity for Women With Morbid Obesity

Primary outcomes

1. Four Square Step Test

   Time frame: 10 weeks

   Three-quarter inch diameter plastic tubing was placed on the ground to form a plus sign. The participant was required to step as fast as possible starting in square 1 in a clockwise direction and then returning counterclockwise making full contact in each square with both feet and not touching the tubing. The participants were required to complete the Four Square Step Test in 15 seconds or less in order to be included in the study based on the research that a time longer than 15 seconds is predictive of multiple falls. The results were compared at the conclusion of the study as an indicator of balance.

2. Zeno Walkway Analysis of Gait Speed

   Time frame: 10 weeks

   Participants were asked to walk along the gait mat for a total of four passes. A piece of tape was placed one meter before and after the gait mat. Participants were instructed to turn around once they reached the piece of tape to decrease the effects of acceleration and deceleration on the gait mat. Data collected on the Protokinetics Zeno Walkway included the participants' gait speed.

3. 36-item Short Form Health Survey (SF-36)

   Time frame: 10 weeks

   The SF-36 was used to measure how each participant viewed their physical and mental health. The questionnaire contained sections that covered vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, social role functioning, and mental health. Overall, the SF-36 has the ability to measure the well-being of older adults . Scores on the SF-36 range from 0-700, with a lower score identifying greater disability and a higher score suggesting less disability.

4. Six Minute Walk Test (6MWT)

   Time frame: 10 weeks

   The 6MWT is a submaximal test of endurance measuring total distance walked in six minutes. A 100 foot walking path was measured down a level, hard surfaced hallway. The participant was asked to repeatedly walk the complete length of the 100 foot walking path as many times as possible in six minutes at a comfortable pace. The participant was allowed to rest during this test, however, the timer did not stop until the six minute time frame had been completed. The total distance upon completion of the 6MWT was documented.

5. 30 Second Sit to Stand

   Time frame: 10 weeks

   The 30 Second Sit to Stand is a test of lower extremity functional strength. This test consists of rising from a standard height chair and returning to sitting as many times as the person is able to within 30 seconds without the use of their upper extremities. It is a measure of lower extremity functional strength.

6. Timed up and go Test

   Time frame: 10 weeks

   The Timed Up and Go test (TUG) begins with the participant seated in an armchair. The participant is instructed to stand up and walk at a comfortable pace to a mark three meters in front of the chair, turn around, walk back to the chair, and sit down. The test is timed, and participants are allowed to use the arms of the chair and an assistive device if they choose. This assessment correlates with fall risk and functional mobility.

7. Single Leg Stance Test

   Time frame: 10 weeks

   The Single Leg Stance test (SLS) test measures static balance while standing on one leg, with a longer time indicating better balance ability. A participant would stand on one leg and hold the position as long as they could up to 30 seconds. Participants were required to perform 3 trials with eyes open and 3 trials with eyes closed on both limbs. The longest of the three trials was used for data analysis. The timer was stopped in the following situations: (1) the foot of the non-stance leg touched the floor, (2) the lower extremities made contact with each other, (3) the participant exceeded 30 seconds of single leg stance, or (4) the participant opened their eyes on the eyes closed trial.