Table 2.

Ongoing studies identified on web-based protocol registers.

Year, title	Title	Participants	Intervention	Comparator	Outcomes
Bronfort, 2005	Chiropractic and exercise for seniors with low back pain	Adults more than 65 years old	Supervised rehabilitative exercise + home exercise	Chiropractic Manual treatment + home exercise Home exercise	Primary: patient-rated pain Secondary: general health, disability, Satisfaction, medication use, and biomechanical test: Lumbar spinal motion Trunk strength & Functional endurance Ability Observed Pain Behavior
França, 2010	Lumbar stabilization, strengthening and stretching in chronic low back pain	Adults from 23 to 53 years old	Strengthening	Stabilization group Stretching group	Primary: pain, functional disability, and TrA muscle activation capacity
Da Silva, 2014	Effect of volume training on back endurance	Adults from 18 to 35 years old	Three sets of exercise	One set of exercise No intervention	Primary: isometric endurance Secondary: number of repetitions Others: EMG fatigue index, Isometric strength
Pennone, 2017	Effect of strength training for chronic low back pain patients	Adults 18 years and older	Strength training	Usual care	Primary: low back pain intensity, Back pain recurrence Secondary: Roland-Morris disability, muscle endurance, use of analgesics, handgrip strength, pain sites
Martins, 2018	Efficacy of exercises in individuals with non-specific chronic low back pain	Adults from 18 to 50 years old	Resistance training	Motor Control	Primary: numerical rating scale, disability and kinesiophobia Secondary: trunk muscle strength
Simões, 2018	Exercise protocol for pilots with back pain	Adults from 25 to 45 years old	Exercise (n = 10)	No intervention (10)	Primary: change in number on Visual Analog Scale (VAS) of pain sensation in areas of the Body and disability Secondary: presence of injuries, postural pattern, musculoskeletal disorders, range of motion, and endurance