Strength Training

This study aims to evaluate the combined effectiveness of Mulligan mobilization and core strengthening exercises in managing postpartum sacroiliac joint dysfunction (SIJD). Postpartum SIJD is a common condition resulting from biomechanical and hormonal changes during pregnancy, often leading to pelvic instability and pain. Mulligan mobilization, a manual therapy technique, aims to correct joint alignment and restore pain-free movement. For the SIJ, Mulligan MWM aims to correct subtle positional faults or movement restrictions that may cause pain and dysfunction-especially common postpartum due to ligamentous laxity, hormonal changes, and altered biomechanics.The core muscles provide stability to the pelvis and lumbar spine. When these muscles are weak or imbalanced, it can lead to increased strain on the SIJ, contributing to pain and dysfunction. Strengthening the core improves load transfer through the pelvis and enhances neuromuscular control, thereby reducing SIJ stress and symptoms. Core strengthening exercises enhances outcomes by targeting both mechanical alignment and muscular stability. Core strengthening exercises target muscles that support pelvic stability, including the transverse abdominis and pelvic floor. The study hypothesizes that integrating Mulligan mobilization with core strengthening may provide superior outcomes in pain reduction, joint function, and overall quality of life compared to core exercises alone.

The goal of this clinical trial is to determine how male and female former athletes experience pain and respond to moderate-intensity exercise (strength versus aerobic) compared with both current master's athletes and nonathletes. The main questions this study aims to address are: 1. How do former athletes, master's athletes, and nonathletes experience pain? 2. How do different types of moderate-intensity exercise (strength versus aerobic exercise) influence pain in former athletes, master's athletes, and nonathletes? Participants will complete 3 different testing sessions: 1. Baseline testing including assessments of strength, cardiorespiratory fitness, and pain; 2. Strength exercise: pain assessments will occur before and after moderate-intensity strength training exercise; 3. Aerobic exercise: pain assessments will occur before and after moderate-intensity aerobic exercise. There will be a washout period of approximately one week or greater between each of the three different testing sessions. The order of conditions (strength versus aerobic exercise) will be randomized (crossover randomized trial design).

Hip fracture is a big health concern in older adults, and can lead to increased risk of death, reduced level of independence \& mobility, reduced quality of life, and higher likelihood of admission to nursing homes. Frailty is a medical condition associated with ageing that results in a reduced ability to do daily tasks. A frail older adult is also less able to recover well from conditions that may affect their wellbeing (for example, infections, falls resulting in injuries or hospital admissions). Frailty is common in older adults with hip fractures. There has been increasing research showing that frailty can be slowed down and improved by a combination of nutritional supplementation and exercise. However, most of the research in this area has been in frail older adults living at home or in nursing homes. The exercise or nutritional programs in these studies tend to be carried out over weeks or months. There are very few studies looking at older adults in hospital and how exercise and nutrition help with frailty over shorter periods of time, even more so in patients who have sustained an injury. There is, however, very little research in hospital based frailty programs in older patients who have suffered major trauma. It is well known that standing up and starting to walk soon after a hip fracture improves time to recovery, reduces hospital length of stay and death. Hence, physiotherapy on the first day after hip fracture surgery is now recommended. However, there needs to be more research to aid in developing physiotherapy and exercise programs that are safe and doable in the care of hip fracture patients despite limited resources in our healthcare system. Similarly, although malnutrition is common in frail older adults with hip fractures, the benefits of nutritional supplementation in these patients is not fully understood. It is known that having a hip fracture puts a person at risk of muscle breakdown and increasing protein intake is recommended to help reduce this risk. Research on exercise and nutrition based frailty programs specific to hip fracture patients is strongly needed, specifically the development of that are doable and safe in the hospital setting that can help improve outcomes in hip fracture patients after surgery. The investigators believe that a multicomponent exercise and nutrition based frailty program will be safe, doable and acceptable in frail older adults after hip fracture surgery.