During the initial 3 month control period, subjects are asked not to begin any new exercise or stretching program during this time.

During the 3 month intervention period that follows, subjects will participate in in-person physical therapist-led instructional sessions three times per week. Each stretch will be performed twice, one on the left and one on the right. The therapist will describe what to do and briefly demonstrate each stretch. Stretches will be held for 45-60 seconds with therapist instructions and modification as needed based on subject technique.

During the initial 3 month control period, subjects are asked not to begin any new exercise or stretching program during this time.

During the 3 month intervention period that follows, subjects will complete sessions three times per week, led by a physical therapist and viewed remotely via pre-recorded video using a smartphone application.

Head/neck stretches

• Head tilt side to side
• Cross-chest stretch Torso stretches
• Side stretch
• Mid-back stretch Lower limb
• Standing quadriceps stretch
• Standing hamstring stretch

The 36-Item Short Form Health Survey (SF-36) is a set of generic, coherent, and easily administered quality-of-life measures.

The Cornell Musculoskeletal Discomfort Questionnaires (CMDQ) is a questionnaire based on previous published research studies of musculoskeletal discomfort among office workers.

The sit and reach test is a common measure of flexibility, and specifically measures the flexibility of the lower back and hamstring muscles.