Effects of strengthening and stretching exercise programmes on kinematics and kinetics of running in older adults: a randomised controlled trial

The aim of this study was to investigate the effects of strengthening and stretching exercises on running kinematics and kinetics in older runners. One hundred and five runners (55–75 years) were randomly assigned to either a strengthening (n = 36), flexibility (n = 34) or control (n = 35) group. Running kinematics and kinetics were obtained using an eight-camera system and an instrumented treadmill before and after the eight-week exercise protocol. Measures of strength and flexibility were also obtained using a dynamometer and inclinometer/goniometer. A time effect was observed for the excursion angles of the ankle sagittal (P = 0.004, d = 0.17) and thorax/pelvis transverse (P < 0.001, d = 0.20) plane. Similarly, a time effect was observed for knee transverse plane impulse (P = 0.013, d = 0.26) and ground reaction force propulsion (P = 0.042, d = ?0.15). A time effect for hip adduction (P = 0.006, d = 0.69), ankle dorsiflexion (P = 0.002, d = 0.47) and hip internal rotation (P = 0.048, d = 0.30) flexibility, and hip extensor (P = 0.001, d = ?0.48) and ankle plantar flexor (P = 0.01, d = 0.39) strength were also observed. However, these changes were irrespective of exercise group. The results of the present study indicate that an eight-week stretching or strengthening protocol, compared to controls, was not effective in altering age-related running biomechanics despite changes in ankle and trunk kinematics, knee kinetics and ground reaction forces along with alterations in muscle strength and flexibility were observed over time.     

Childhood emotional maltreatment and later psychological distress among college students: The mediating role of maladaptive schemas

ObjectiveTheoretically, exposure to experiences of emotional abuse (EA) and emotional neglect (EN) in childhood may threaten the security of attachment relationships and result in maladaptive models of self and self-in-relation to others. The purpose of this study was to explore the extent to which EA and EN treatment by parents contributed uniquely to young adult maladaptive long-term outcome with respect to symptoms of anxiety, depression, and dissociation. The extent to which the relationships between EA and EN and later symptoms were mediated by specific internalized maladaptive interpersonal schemas was also explored.MethodsQuestionnaires completed by 301 college men and women (52% female) assessed perceptions of experiences of childhood abuse and neglect, exposure to parental alcoholism, current symptoms of psychological distress, and endorsement of maladaptive interpersonal schemas.ResultsHierarchical regression analyses revealed that perceptions of childhood EA and EN each continued to exert an influence on later symptoms after controlling for gender, income, parental alcoholism, and other child abuse experiences. Both EA and EN were associated with later symptoms of anxiety and depression and were mediated by schemas of vulnerability to harm, shame, and self-sacrifice. Only EN was related to later symptoms of dissociation; this relationship was mediated by the schemas of shame and vulnerability to harm.ConclusionThe findings are discussed from an attachment perspective, focusing on how early interactions with parents contribute to the development of internal working models of self and self-in-relation to others that influence later cognitive schemas and psychological adjustment.Practice implicationsAlthough emotional abuse and emotional neglect are the least studied of all forms of child maltreatment, they may be the most prevalent. The current findings suggest that how college students have evaluated and internalized these experiences may be even more important than the events themselves in determining the extent to which these experiences exert a long-term impact. For this reason, early intervention might be particularly important in helping to modify internal working models of the self as worthless, others as abusive, or the world as threatening and dangerous as a result of past abuse experiences. This study underscores the need for counselors to actively elicit and explore experiences of emotional abuse and neglect in clients, in addition to inquiring about other abuse experiences and types of family dysfunction.The results of this study also support existing data suggesting that internalized representational models of self and others are a key mechanism underlying the relationship between emotional maltreatment and later psychopathology. Young's schema questionnaire proved to be quite sensitive in detecting specific maladaptive schemas that mediated later difficulties with depression, anxiety, and dissociation. Targeting these negative schemas in therapy may help to ameliorate such symptoms. The therapeutic relationship provides a particularly effective context for developing more positive models of self and others, as well as providing a context to explore core relationship themes across different relationship contexts (e.g., intimate partner, parent, friend, and work relationships). In particular, if the assessment of the client reveals that dissociative symptoms are present, counselors can acknowledge the adaptive function that this strategy once served, while also addressing potential limitations to over-reliance on this coping strategy.     

The ‘will to give’: corporations,philanthropy and schools

In contemporary times, corporate philanthropy is positioned as an effective means to ‘solve’ a variety of social problems. Childhood obesity is one such ‘problem’ that has captured the interests of schools, corporations, industry groups and a number of ‘not-for-profit’ players. In this paper, I critically examine how the private sector uses the notion of philanthropy to shape school-based solutions to obesity and unhealthy lifestyles. By conducting a critical ethnography in two New Zealand primary schools and drawing on Foucauldian notions of government and ‘practices of assemblage’, I illuminate how a number of organisations officially planned to employ philanthropy as a means to govern others, as well as what actually happened when these plans met their intended targets: children, teachers and principals. Although corporations, charities and schools were assembled together through their combined ‘will to give’, the notion of philanthropy helped to re-assemble and re-invent private sector organisations so that they were seen to be socially responsible, healthy, and even educational. Philanthropy also worked to mask private sector players less altruistic interests: branding, public relations strategies, avoidance of stricter regulations and legislation, and the desire to profit.     

Evidence of sub-optimal sleep in adolescent Middle Eastern academy soccer players which is exacerbated by sleep intermission proximal to dawn†

The purpose was to assess sleep patterns, quantity and quality in adolescent (16.2?±?1.2 yr) Middle Eastern academy soccer players (n?=?20) and the influence of an intermission upon these characteristics. On a 17-day training camp (located one time zone west of home) including three discrete matches, sleep was assessed pre- (PRE) and post-match (POST) via wrist actigraphy. Retrospective actigraphy analysis identified sleep characteristics, including if players experienced a sleep intermission (YES) or not (NO) proximal to dawn, and bedtime (hh:mm), get-up time (hh:mm), time in bed (h), sleep duration (h) and sleep efficiency (%). Within YES two bouts were identified (BOUT1 and BOUT2). No differences were seen between PRE and POST, nor between BOUT1 and BOUT2 (p?>?.05). Overall players did not meet National Sleep Foundation (NSF) guidelines (7:04?±?1:16?h vs. recommended 8–10?h for 14–17 yr). Sleep duration was significantly reduced (～ ?13% or ?1:06) in YES compared to NO (6:33?±?1:05 vs. 7:29?±?1:17, p?<?.01). Despite players in YES waking earlier due to an intermission, they did not compensate for this with a later wake time, rising significantly earlier compared to NO (09:40?±?00:38 vs. 10:13?±?00:40, p?<?.05). These players on average do not obtain sufficient sleep durations relative to NSF guidelines, with decrements increased by an intermission proximal to dawn. High inter- and intra-individual variance in the players sleep characteristics indicates the need for individualized sleep education strategies and interventions to promote appropriate sleep.