The purpose of the study was to investigate sex-related differences in foot morphology. In total, 847 subjects were scanned using a 3-D-footscanner. Three different analysis methods were used: (1) comparisons were made for absolute foot measures within 250–270 mm foot length (FL); (2) and for averaged measures (% FL) across all sizes; (3) the feet were then classified using a cluster analysis. Within 250–270 mm FL, male feet were wider and higher (mean differences (MD) 1.3–5.9 mm). No relevant sex-related differences could be found in the comparison of averaged measures (MD 0.3–0.6% FL). Foot types were categorised into voluminous, flat-pointed and slender. Shorter feet were more often voluminous, longer feet were more likely to be narrow and flat. However, the definition of ‘short’ and ‘long’ was sex-related; thus, allometry of foot measures was different. For shoe design, measures should be derived for each size and sex separately. Different foot types should be considered to account for the variety in foot shape. Improper footwear can cause foot pain and deformity. Therefore, knowledge of sex-related differences in foot measures is important to assist proper shoe fit in both men and women. The present study supplements the field of knowledge within this context with recommendations for the manufacturing of shoes.

The purpose of this study was to investigate differences between female feet and last design. Four hundred twenty-four feet and four men's running shoe lasts (U.S. women 6.0–9.5), which also are used for the manufacturing of women's shoes, were scanned in three dimensions. Six foot measures were quantified. Different foot types were classified using a cluster analysis. Comparisons were made between last measures and averaged as well as foot type specific foot measures. Differences in width measures between lasts and foot types vary substantially (0–9 mm). Length grading is similar for lasts and feet (differences < 1mm). Width grading is larger in lasts in comparison with average grading in feet (3.5–5.9 mm). Last design and grading should account for the sex-specific allometry in foot measures. The use of down-graded men's lasts for women's shoes has to be questioned. Therefore, sex-specific reference measures and wear tests should incorporate different foot types in different sizes to allow suitable implications for a proper design and grading of lasts.

Background: Exercise therapy is recommended by international guidelines as a core treatment for patients with knee osteoarthritis. However, there is a significant gap between recommendations and practice in health care. Digital exercise apps are promising to help solve this undersupply. Objective: This study aims to evaluate the efficacy of a 12-week fully automated app-based exercise intervention with and without a supporting knee brace on health-related outcomes, performance measures, and adherence in patients with knee osteoarthritis. Methods: This closed user group trial included participants with moderate to severe unicondylar painful knee osteoarthritis. Randomization was 1:1:2 into an intervention group (IG) with 2 subgroups (app-based training [IG A] and app-based training and a supportive knee brace [IG AB]) and a control group (CG). The intervention included a 12-week home exercise program with 3 sessions per week. Instructions for the exercises were given via the app and monitored using 2 accelerometers placed below and above the affected knee joint. Participants in the CG did not receive any study intervention but were allowed to make use of usual care. Osteoarthritis-specific pain (Knee Injury and Osteoarthritis Outcome Score) was defined as the primary outcome, and secondary outcomes included all other Knee Injury and Osteoarthritis Outcome Score subscales, general health-related quality of life (Veterans RAND 12-item Health Survey), psychological measures (eg, exercise self-efficacy), performance measures (strength and postural control), and the monitoring of adherence and safety. Outcomes were assessed at baseline and after 12 weeks. Intervention effects were calculated using baseline-adjusted analysis of covariance for the joint comparison of IG A and IG AB versus the CG using a per-protocol approach. Subgroup analyses were conducted for each IG separately. Results: A total of 61 participants were included (IG: n=30, 49%; CG: n=31, 51%; male: n=31, 51%; female: n=30, 49%; mean age 62.9, SD 8.5 years; mean BMI 27.7, SD 4.5 kg/m2). Analysis revealed statistically significant effects in favor of the IG for pain reduction (P<.001; effect size [ES]=0.76), improvements in physical function (P<.001; ES=0.64), improvements in symptoms (P=.01; ES=0.53), improvements in sport and recreation activities (P=.02; ES=0.47), improvements in knee-related quality of life (P<.001; ES=0.76), and improvements in the physical component of general health-related quality of life (P<.001; ES=0.74). Mean differences ranged from 6.0 to 13.2 points (scale range 0-100). ESs indicated small to medium effects. No effects were found for psychological and performance measures. Participants adhered to 92.5% (899/972) of all scheduled exercise sessions. Conclusions: Individuals with knee osteoarthritis undergoing a 12-week sensor-assisted app-based exercise intervention with or without an additional knee brace experienced clinically meaningful treatment effects regarding pain relief and improvements in physical function as well as other osteoarthritis-specific concerns compared to controls. Trial Registration: German Clinical Trials Register (DRKS) DRKS00023269; https://drks.de/search/de/trial/DRKS00023269

The study's purpose was to substantiate findings on sex-related differences in foot morphology focusing on fringe sizes. Altogether, 287 Caucasian adults with long or short feet were scanned. Data were analysed together with data from 847 subjects from a previous study with comparable inclusion criteria and anthropometric data by: (1)comparing absolute measures within 237–277 mm foot length (FL); (2) comparing averaged measures across sizes in % of foot length for 203–323mm FL; (3) reclassifying the additional subjects into a previously defined foot type classification. Male feet were wider and higher for the same FL. Averaged across sizes, no relevant differences between sexes were found for widths and heights. Slender or flat-pointed foot types were more common in longer feet, shorter feet tended to be bigger. Definitions for ‘long’ and ‘short’ are sex-related with an offset of three shoe sizes (EU). Results of this follow-up study on long and short feet can substantiate previous findings mainly described for the most common sizes. Statement of Relevance: Improper footwear can cause pain and injury and proper fit is a major criterion for shoe buyers. Knowledge about sex-related differences in foot shape is important for shoe design. This study supplements the field of knowledge for very small and large feet.

Introduction: The numerous health benefits of physical activity (PA) for people with non-communicable diseases (NCDs) are well-documented. In Germany, there are limited data on whether adults with NCDs fulfill health-oriented PA recommendations. This study describes the prevalence of meeting PA recommendations among adults with select NCDs. Method: Based on the national representative GEDA-2014/2015-EHIS (N = 24,016), the self-reported PA data of the European Health Interview Survey–Physical Activity Questionnaire (EHIS-PAQ) were classified with respect to fulfilling recommendations for health-enhancing aerobic activities (≥ 150 min per week with at least moderate intensity) and muscle strengthening (≥ 2 times per week). These binary indicators were used to analyze the association between the prevalence of sufficient PA and the self-reported presence of certain NCDs and multiple NCDs to reflect multimorbidity. Results: Compared to the general adult population, sufficient aerobic PA was lower for most NCDs, with the lowest level among people with diabetes mellitus, obesity, stroke, chronic obstructive pulmonary disease (COPD), and depression. Compared to the general adult population, sufficient muscle strengthening was lower for some NCDs (diabetes mellitus, obesity, depression), but it was higher in people with musculoskeletal diseases (osteoarthritis, lower back pain). Multimorbidity was negatively associated with sufficient PA levels. Conclusion: The study specifies the need to promote PA among adults with select NCDs to counteract insufficient levels of health-enhancing PA and to reduce the individual and societal burden of NCDs.

Osteoarthritis of the hip is a progressive, degenerative disorder that affects the musculoskeletal system in adults; its estimated prevalence is 11% (1). The early stages are characterized by pain after intense joint loading; the later stages feature...